Gestational Trophoblastic Neoplasm

MONDO:0018944 Pathograph 5 Show in embeddings browser trophoblastic neoplasm female reproductive system neoplasm pregnancy disorder

Gestational trophoblastic neoplasm (GTN) is the malignant end of the gestational trophoblastic disease spectrum, comprising invasive hydatidiform mole, gestational choriocarcinoma, placental-site trophoblastic tumor (PSTT), and epithelioid trophoblastic tumor (ETT). These tumors arise from abnormal proliferation of placental trophoblast after a molar, abortive, ectopic, or term pregnancy and are unified by their pregnancy-related origin and secretion of human chorionic gonadotropin (hCG), which serves as a sensitive tumor biomarker for diagnosis and monitoring. The villous-trophoblast lesions (invasive mole, choriocarcinoma) frequently follow a complete hydatidiform mole, whose androgenetic (paternal-only) diploid genome and loss of the maternally-imprinted CDKN1C/p57 product underlie excessive trophoblast proliferation; the intermediate-trophoblast lesions (PSTT, ETT) arise from implantation-site or chorionic-type intermediate trophoblast and are relatively chemoresistant. GTN is one of the most curable solid malignancies: low-risk disease responds to single-agent methotrexate or dactinomycin with cure rates approaching 100%, while high-risk disease is treated with multiagent regimens such as EMA/CO.

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6
Pathophys.
5
Phenotypes
5
Pathograph
2
Genes
6
Medical Actions
4
Subtypes
9
References
1
Deep Research
🏷

Classifications

Harrison's Chapter
ONCOLOGY_HEMATOLOGY
◆

Subtypes

4
Invasive Hydatidiform Mole NCIT:C6985
Invasive mole arises when molar villi (most often from a complete hydatidiform mole) penetrate the myometrium or its vessels rather than remaining confined to the uterine cavity. It retains hydropic chorionic villi with trophoblastic hyperplasia and is the most common form of GTN, typically diagnosed by a rising or plateauing hCG after molar evacuation. It can metastasize, most often to the lungs, but is highly curable with chemotherapy.
Show evidence (1 reference)
PMID:20673583 SUPPORT Human Clinical
"the malignant disorders of invasive mole, choriocarcinoma, and the rare placental-site trophoblastic tumour"
Authoritative Lancet review classifies invasive mole as one of the malignant trophoblastic disorders (gestational trophoblastic neoplasia).
Gestational Choriocarcinoma NCIT:C2948
Gestational choriocarcinoma is a highly malignant, rapidly metastasizing epithelial tumor composed of dimorphic neoplastic cytotrophoblast and syncytiotrophoblast without chorionic villi. It can follow any gestation (about half follow a complete mole, the remainder follow abortion, ectopic, or term pregnancy), secretes high levels of hCG, and has a strong propensity for hematogenous spread to lung, brain, and liver. Despite its aggressiveness it is highly chemosensitive and curable.
Show evidence (1 reference)
PMID:22469506 SUPPORT Human Clinical
"Gestational choriocarcinoma is usually a rapidly spreading fatal disease, but it is curable if diagnosed early and treated."
Supports gestational choriocarcinoma as an aggressive but highly curable malignant subtype of GTN.
Placental-Site Trophoblastic Tumor NCIT:C3757
Placental-site trophoblastic tumor (PSTT) is a rare GTN arising from implantation-site intermediate (extravillous) trophoblast. It produces relatively low hCG but expresses human placental lactogen (hPL), grows more slowly, tends to remain localized to the uterus, and is relatively resistant to chemotherapy, so hysterectomy is the primary treatment for localized disease.
Show evidence (1 reference)
PMID:20739008 SUPPORT Human Clinical
"Gestational trophoblastic neoplasia (GTN) includes invasive mole, choriocarcinoma, placental site trophoblastic tumor, and epithelioid trophoblastic tumor."
Supports PSTT as a recognized distinct subtype within gestational trophoblastic neoplasia.
Epithelioid Trophoblastic Tumor NCIT:C6900
Epithelioid trophoblastic tumor (ETT) is the rarest GTN, arising from chorionic-type intermediate trophoblast. It forms nodular epithelioid nests, may mimic squamous cell carcinoma, produces low hCG, and like PSTT is relatively chemoresistant, with surgery the mainstay for localized disease.
Show evidence (1 reference)
PMID:20739008 SUPPORT Human Clinical
"Gestational trophoblastic neoplasia (GTN) includes invasive mole, choriocarcinoma, placental site trophoblastic tumor, and epithelioid trophoblastic tumor."
Supports ETT as a recognized distinct subtype within gestational trophoblastic neoplasia.
⚙

Pathophysiology

6
Androgenetic Origin and Loss of Genomic Imprinting
Complete hydatidiform mole, the principal precursor of villous GTN (invasive mole and choriocarcinoma), is typically diploid but androgenetic: the entire genome is paternally derived (most commonly by duplication of a single sperm genome in an ovum that has lost its maternal chromosomes). Because the maternally-expressed, paternally- imprinted gene CDKN1C (encoding p57^KIP2) is silenced when the maternal genome is absent, p57 protein is lost in villous cytotrophoblast and stromal cells. This imbalance of imprinted gene dosage favors overgrowth of trophoblast and is the molecular basis for the diagnostic p57 immunostain.
trophoblast cell CL:0000351
genomic imprinting GO:0071514 ⚠ ABNORMAL
Downstream
Loss of p57 and Trophoblast Hyperproliferation Absent maternal allele silences CDKN1C/p57, releasing trophoblast growth control
Show evidence (1 reference)
PMID:22469506 SUPPORT Human Clinical
"The surprising and unique androgenetic origin of complete hydatidiform molar pregnancies was first revealed by Kajii and Ohama in 1977."
Supports the androgenetic (paternal-only) genomic origin of complete hydatidiform mole, the imprinting imbalance that drives villous GTN.
Loss of p57 and Trophoblast Hyperproliferation
p57^KIP2 (CDKN1C) is a cyclin-dependent kinase inhibitor normally expressed from the maternal allele. In complete moles its loss removes a brake on the cell cycle in villous cytotrophoblast, contributing to the marked trophoblastic hyperplasia that characterizes complete mole and can progress to invasive mole or choriocarcinoma. Negative p57 immunostaining of cytotrophoblast and villous stroma is used clinically to confirm complete mole and distinguish it from partial mole and non-molar abortions.
mononuclear cytotrophoblast cell CL:0000523
cell population proliferation GO:0008283 ↑ INCREASED
Downstream
Trophoblast Invasion and Hematogenous Metastasis Unchecked trophoblast proliferation acquires invasive and metastatic behavior
Show evidence (1 reference)
PMID:33024305 SUPPORT Human Clinical
"Of 564 successfully immunostained CHMs, 563 (99.8%) were p57-negative"
A large prospective series shows complete hydatidiform moles are essentially uniformly p57-negative, supporting loss of the maternally-imprinted p57 product in the proliferating trophoblast of the principal GTN precursor.
Tumor Suppressor and Apoptosis Dysregulation
Beyond imprinting-driven proliferation, malignant transformation along the gestational trophoblastic disease spectrum involves dysregulation of the p53 (TP53) tumor suppressor pathway and aberrant apoptotic signaling through anti-apoptotic BCL-2, together with altered growth-factor-receptor and microRNA expression. These changes impair the apoptotic clearance of proliferating trophoblast and help distinguish molar pregnancies and trophoblastic neoplasms from normal placental development, contributing to their progression from benign moles toward malignant GTN.
trophoblast cell CL:0000351
TP53 hgnc:11998
regulation of apoptotic process GO:0042981 ⚠ ABNORMAL
Show evidence (1 reference)
PMID:39201425 SUPPORT Human Clinical
"dysregulations in tumor suppressor genes such as p53, aberrant apoptotic pathways involving BCL-2 (B-cell lymphoma)"
A systematic review of 71 studies on the molecular basis of gestational trophoblastic disease identifies p53 tumor-suppressor dysregulation and aberrant BCL-2 apoptotic pathways as recurrent molecular alterations driving progression along the molar-to-malignant trophoblastic spectrum.
hCG Hypersecretion by Neoplastic Syncytiotrophoblast
Neoplastic syncytiotrophoblast in GTN secretes large amounts of human chorionic gonadotropin (hCG), recapitulating the hormone-producing function of normal placental syncytiotrophoblast. Circulating hCG correlates with tumor burden and is the central biomarker for diagnosis, risk scoring, treatment monitoring, and detection of relapse. Markedly elevated hCG can also stimulate the thyrotropin receptor (causing paraneoplastic hyperthyroidism) and the ovaries (theca-lutein cysts).
syncytiotrophoblast cell CL:0000525
gonadotropin secretion GO:0032274 ↑ INCREASED
Show evidence (1 reference)
PMID:20673583 SUPPORT Human Clinical
"the use of human chorionic gonadotropin as a biomarker"
The Lancet review identifies hCG produced by trophoblastic tumors as the biomarker central to GTN diagnosis and monitoring, reflecting hormone hypersecretion by neoplastic syncytiotrophoblast.
Trophoblast Invasion and Hematogenous Metastasis
Normal trophoblast is physiologically invasive and angiogenic. In GTN these programs become deregulated: neoplastic trophoblast invades myometrium and uterine vessels (invasive mole) and, in choriocarcinoma, disseminates hematogenously to the lungs, brain, and liver. The intrinsic angiogenic and invasive phenotype of trophoblast accounts for the early vascular spread and hemorrhagic character of these tumors.
extravillous trophoblast CL:0008036
trophoblast cell migration GO:0061450 ↑ INCREASED angiogenesis GO:0001525 ↑ INCREASED
Show evidence (1 reference)
PMID:22469506 SUPPORT Human Clinical
"Gestational choriocarcinoma is usually a rapidly spreading fatal disease"
Supports the rapidly invasive and metastatic behavior of gestational choriocarcinoma, the hematogenously spreading form of GTN.
PD-1/PD-L1 Adaptive Immune Resistance
GTN is genetically a semi-allograft (the tumor genome differs from the host, being wholly or partly paternal), which makes it intrinsically immunogenic. To evade host T-cell attack, neoplastic trophoblast co-opts the placental immune-tolerance program and broadly expresses the immune checkpoint ligand PD-L1, engaging PD-1 on tumor-infiltrating T cells to suppress the anti-tumor T-cell response. This adaptive immune resistance is the mechanistic rationale for immune checkpoint inhibitor therapy, which is effective even in chemoresistant, ultra-high-risk, and PSTT/ETT disease.
T cell CL:0000084
negative regulation of T cell mediated immune response to tumor cell GO:0002841 ↑ INCREASED
Show evidence (1 reference)
PMID:37703867 SUPPORT Human Clinical
"Immune checkpoint immunotherapy (CPI) targeting programmed cell death 1 (PD-1)/ligand (PD-L1) has been shown to be an effective treatment for gestational trophoblastic neoplasia (GTN)."
The efficacy of PD-1/PD-L1 checkpoint blockade in GTN demonstrates that the PD-1/PD-L1 axis is an operative immune-resistance mechanism in these tumors.
⬡

Pathograph

Use the checkboxes to hide or show graph categories. Hover nodes for evidence and cross-linked metadata.
Pathograph: causal mechanism network for Gestational Trophoblastic Neoplasm Interactive directed graph showing how pathophysiology mechanisms, phenotypes, genetic factors and variants, experimental models, environmental triggers, and treatments relate through causal and linked edges.
●

Phenotypes

5
Endocrine 1
Hyperthyroidism Hyperthyroidism HP:0000836
Show evidence (1 reference)
PMID:38098552 SUPPORT Human Clinical
"Hyperthyroidism is a result of extremely high levels of β-HCG levels due to molecular cross-reactivity."
Directly supports hCG-mediated (TSH-receptor cross-reactivity) hyperthyroidism as a paraneoplastic complication of high-hCG molar / trophoblastic disease.
Neoplasm 1
Pulmonary Metastasis Neoplasm of the lung HP:0100526
Show evidence (1 reference)
PMID:20739008 SUPPORT Human Clinical
"Nonmetastatic (stage I) and low-risk metastatic (stages II and III, score <7) GTN"
Staging of GTN explicitly distinguishes metastatic disease (stage III denotes lung metastasis), supporting pulmonary metastasis as a key feature of GTN.
Other 3
Abnormal Vaginal Bleeding Abnormal vaginal bleeding HP:0034263
Show evidence (1 reference)
PMID:38098552 SUPPORT Human Clinical
"It manifests as vaginal bleeding, accompanied by high levels of β-human chorionic gonadotropin (β-HCG)."
Directly supports vaginal bleeding (with elevated hCG) as the cardinal presenting manifestation of trophoblastic disease.
Elevated hCG Elevated circulating beta chorionic gonadotropin concentration HP:6000485
Show evidence (1 reference)
PMID:20673583 SUPPORT Human Clinical
"the use of human chorionic gonadotropin as a biomarker"
hCG elevation is the defining biochemical abnormality and biomarker of GTN.
Uterine Neoplasm Uterine neoplasm HP:0010784
Show evidence (1 reference)
PMID:20739008 SUPPORT Human Clinical
"Gestational trophoblastic neoplasia (GTN) includes invasive mole, choriocarcinoma, placental site trophoblastic tumor, and epithelioid trophoblastic tumor."
The malignant trophoblastic tumors comprising GTN are uterine neoplasms.
🧬

Genetic Associations

2
Androgenetic Diploid Genome (Complete Mole Precursor)
Show evidence (1 reference)
PMID:33024305 SUPPORT Human Clinical
"Of 153 genotyped CHMs, 148 (96.7%) were androgenetic (85% monospermic)"
Genotyping of complete moles confirms a predominantly androgenetic, mostly monospermic origin, the genetic basis of the GTN precursor.
Recurrent Mole Predisposition Genes (Meiosis I / Maternal-Effect)
Gene: HFM1 hgnc:20193
Autosomal recessive
Show evidence (1 reference)
PMID:39545410 SUPPORT Human Clinical
"We identified biallelic deleterious variants in 6 genes, FOXL2, MAJIN, KASH5, SYCP2, MEIOB, and HFM1, in patients with androgenetic HMs"
Exome sequencing identifies biallelic meiosis-I gene variants (including HFM1) as a recessive cause of recurrent androgenetic moles, a predisposing genetic background for GTN.
💊

Medical Actions

6
Suction Evacuation / Dilation and Curettage
Action: Dilation and Curettage NCIT:C15226
Uterine evacuation by suction curettage is the primary management of hydatidiform mole and is followed by serial hCG monitoring to detect postmolar GTN.
Show evidence (1 reference)
PMID:20728069 SUPPORT Human Clinical
"Particular emphasis is given to management of hydatidiform mole, including evacuation"
Evacuation of the molar pregnancy is the cornerstone of hydatidiform mole management and the prelude to GTN surveillance.
Single-Agent Methotrexate
Action: chemotherapy MAXO:0000647
Agent: methotrexate CHEBI:44185
Single-agent methotrexate (or dactinomycin) is the standard treatment for low-risk (FIGO score <7) GTN, achieving cure rates approaching 100%.
Show evidence (1 reference)
PMID:20739008 SUPPORT Human Clinical
"low-risk metastatic (stages II and III, score <7) GTN can be treated with single-agent chemotherapy resulting in a survival rate approaching 100%."
Establishes single-agent chemotherapy (methotrexate or dactinomycin) as curative treatment for low-risk GTN.
Single-Agent Dactinomycin
Action: chemotherapy MAXO:0000647
Agent: actinomycin D CHEBI:27666
Dactinomycin (actinomycin D) is the alternative single agent for low-risk GTN, used as first line in some centers and as salvage for methotrexate-resistant low-risk disease.
Show evidence (1 reference)
PMID:20739008 SUPPORT Human Clinical
"low-risk metastatic (stages II and III, score <7) GTN can be treated with single-agent chemotherapy resulting in a survival rate approaching 100%."
Single-agent chemotherapy for low-risk GTN includes dactinomycin as a standard option.
Multiagent Chemotherapy (EMA/CO)
Action: chemotherapy MAXO:0000647
Agent: etoposide CHEBI:4911 methotrexate CHEBI:44185 actinomycin D CHEBI:27666 cyclophosphamide CHEBI:4027 vincristine CHEBI:28445
High-risk GTN (FIGO/WHO score >=7) requires multiagent chemotherapy, most commonly the EMA/CO regimen (etoposide, methotrexate, dactinomycin, cyclophosphamide, vincristine), with or without adjuvant surgery and radiation, achieving survival of 80-90%.
Show evidence (1 reference)
PMID:20739008 SUPPORT Human Clinical
"High-risk GTN (stages II-IV, score ≥7) requires initial multiagent chemotherapy with or without adjuvant radiation and surgery to achieve a survival rate of 80-90%."
Establishes multiagent chemotherapy (e.g., EMA/CO) as the standard for high-risk GTN.
Hysterectomy
Action: Hysterectomy NCIT:C15256
Hysterectomy is the primary treatment for localized placental-site trophoblastic tumor and epithelioid trophoblastic tumor, which are relatively chemoresistant, and is an option for other GTN in women who have completed childbearing.
Show evidence (1 reference)
PMID:20739008 SUPPORT Human Clinical
"High-risk GTN (stages II-IV, score ≥7) requires initial multiagent chemotherapy with or without adjuvant radiation and surgery"
Surgery (including hysterectomy) is part of multimodal GTN management, and is the mainstay for chemoresistant intermediate-trophoblast tumors (PSTT/ETT).
Immune Checkpoint Inhibitor Therapy (Anti-PD-1/PD-L1)
Action: Pharmacotherapy NCIT:C15986
Agent: pembrolizumab NCIT:C106432
PD-1/PD-L1 immune checkpoint inhibitors (e.g., pembrolizumab, avelumab, nivolumab) are an emerging treatment for GTN, with notable activity in multidrug-resistant, ultra-high-risk, and inherently chemoresistant PSTT/ETT, and emerging evidence in low-risk disease. They exploit the tumor's reliance on PD-L1-mediated adaptive immune resistance.
Mechanism Target:
INHIBITS PD-1/PD-L1 Adaptive Immune Resistance — Checkpoint blockade releases tumor-infiltrating T cells from PD-1/PD-L1 inhibition, restoring anti-trophoblast immunity.
Show evidence (1 reference)
PMID:37703867 SUPPORT Human Clinical
"This includes those with multidrug resistance, ultra-high-risk disease, and epithelioid trophoblastic tumour/placental site trophoblastic tumour subtypes that are inherently chemotherapy resistant, but there is also emerging evidence in low-risk disease."
A systematic review reports checkpoint inhibitor efficacy across multidrug-resistant, ultra-high-risk, and chemoresistant PSTT/ETT GTN, supporting anti-PD-1/PD-L1 therapy as a treatment option.
🔬

Biochemical Markers

1
Human Chorionic Gonadotropin (hCG) (INCREASED)
Show evidence (1 reference)
PMID:20673583 SUPPORT Human Clinical
"the use of human chorionic gonadotropin as a biomarker"
Establishes hCG as the central biochemical biomarker for GTN diagnosis and monitoring.
{ }

Source YAML

click to show 
name: Gestational Trophoblastic Neoplasm
creation_date: "2026-06-15T00:00:00Z"
description: >-
  Gestational trophoblastic neoplasm (GTN) is the malignant end of the
  gestational trophoblastic disease spectrum, comprising invasive
  hydatidiform mole, gestational choriocarcinoma, placental-site
  trophoblastic tumor (PSTT), and epithelioid trophoblastic tumor (ETT).
  These tumors arise from abnormal proliferation of placental trophoblast
  after a molar, abortive, ectopic, or term pregnancy and are unified by
  their pregnancy-related origin and secretion of human chorionic
  gonadotropin (hCG), which serves as a sensitive tumor biomarker for
  diagnosis and monitoring. The villous-trophoblast lesions (invasive mole,
  choriocarcinoma) frequently follow a complete hydatidiform mole, whose
  androgenetic (paternal-only) diploid genome and loss of the
  maternally-imprinted CDKN1C/p57 product underlie excessive trophoblast
  proliferation; the intermediate-trophoblast lesions (PSTT, ETT) arise from
  implantation-site or chorionic-type intermediate trophoblast and are
  relatively chemoresistant. GTN is one of the most curable solid
  malignancies: low-risk disease responds to single-agent methotrexate or
  dactinomycin with cure rates approaching 100%, while high-risk disease is
  treated with multiagent regimens such as EMA/CO.
categories:
- Female Reproductive System Neoplasm
- Pregnancy-Associated Cancer
disease_term:
  preferred_term: Gestational Trophoblastic Neoplasm
  term:
    id: MONDO:0018944
    label: gestational trophoblastic neoplasm
parents:
- trophoblastic neoplasm
- female reproductive system neoplasm
- pregnancy disorder
has_subtypes:
- name: Invasive Mole
  display_name: Invasive Hydatidiform Mole
  subtype_term:
    preferred_term: Invasive Hydatidiform Mole
    term:
      id: NCIT:C6985
      label: Invasive Hydatidiform Mole
  description: >-
    Invasive mole arises when molar villi (most often from a complete
    hydatidiform mole) penetrate the myometrium or its vessels rather than
    remaining confined to the uterine cavity. It retains hydropic chorionic
    villi with trophoblastic hyperplasia and is the most common form of GTN,
    typically diagnosed by a rising or plateauing hCG after molar
    evacuation. It can metastasize, most often to the lungs, but is highly
    curable with chemotherapy.
  evidence:
  - reference: PMID:20673583
    reference_title: "Gestational trophoblastic disease."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "the malignant disorders of invasive mole, \nchoriocarcinoma, and the rare placental-site trophoblastic tumour"
    explanation: >-
      Authoritative Lancet review classifies invasive mole as one of the
      malignant trophoblastic disorders (gestational trophoblastic
      neoplasia).
- name: Choriocarcinoma
  display_name: Gestational Choriocarcinoma
  subtype_term:
    preferred_term: Gestational Choriocarcinoma
    term:
      id: NCIT:C2948
      label: Choriocarcinoma
  description: >-
    Gestational choriocarcinoma is a highly malignant, rapidly metastasizing
    epithelial tumor composed of dimorphic neoplastic cytotrophoblast and
    syncytiotrophoblast without chorionic villi. It can follow any gestation
    (about half follow a complete mole, the remainder follow abortion,
    ectopic, or term pregnancy), secretes high levels of hCG, and has a
    strong propensity for hematogenous spread to lung, brain, and liver.
    Despite its aggressiveness it is highly chemosensitive and curable.
  evidence:
  - reference: PMID:22469506
    reference_title: "The genetics of gestational trophoblastic disease: a rare complication of pregnancy."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "Gestational choriocarcinoma is usually a rapidly spreading fatal disease, but it \nis curable if diagnosed early and treated."
    explanation: >-
      Supports gestational choriocarcinoma as an aggressive but highly
      curable malignant subtype of GTN.
- name: PSTT
  display_name: Placental-Site Trophoblastic Tumor
  subtype_term:
    preferred_term: Placental Site Trophoblastic Tumor
    term:
      id: NCIT:C3757
      label: Placental Site Trophoblastic Tumor
  description: >-
    Placental-site trophoblastic tumor (PSTT) is a rare GTN arising from
    implantation-site intermediate (extravillous) trophoblast. It produces
    relatively low hCG but expresses human placental lactogen (hPL), grows
    more slowly, tends to remain localized to the uterus, and is relatively
    resistant to chemotherapy, so hysterectomy is the primary treatment for
    localized disease.
  evidence:
  - reference: PMID:20739008
    reference_title: "Gestational trophoblastic disease II: classification and management of gestational trophoblastic neoplasia."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "Gestational trophoblastic neoplasia (GTN) includes invasive mole, \nchoriocarcinoma, placental site trophoblastic tumor, and epithelioid \ntrophoblastic tumor."
    explanation: >-
      Supports PSTT as a recognized distinct subtype within gestational
      trophoblastic neoplasia.
- name: ETT
  display_name: Epithelioid Trophoblastic Tumor
  subtype_term:
    preferred_term: Epithelioid Trophoblastic Tumor
    term:
      id: NCIT:C6900
      label: Epithelioid Trophoblastic Tumor
  description: >-
    Epithelioid trophoblastic tumor (ETT) is the rarest GTN, arising from
    chorionic-type intermediate trophoblast. It forms nodular epithelioid
    nests, may mimic squamous cell carcinoma, produces low hCG, and like
    PSTT is relatively chemoresistant, with surgery the mainstay for
    localized disease.
  evidence:
  - reference: PMID:20739008
    reference_title: "Gestational trophoblastic disease II: classification and management of gestational trophoblastic neoplasia."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "Gestational trophoblastic neoplasia (GTN) includes invasive mole, \nchoriocarcinoma, placental site trophoblastic tumor, and epithelioid \ntrophoblastic tumor."
    explanation: >-
      Supports ETT as a recognized distinct subtype within gestational
      trophoblastic neoplasia.
pathophysiology:
- name: Androgenetic Origin and Loss of Genomic Imprinting
  description: >-
    Complete hydatidiform mole, the principal precursor of villous GTN
    (invasive mole and choriocarcinoma), is typically diploid but
    androgenetic: the entire genome is paternally derived (most commonly by
    duplication of a single sperm genome in an ovum that has lost its
    maternal chromosomes). Because the maternally-expressed, paternally-
    imprinted gene CDKN1C (encoding p57^KIP2) is silenced when the maternal
    genome is absent, p57 protein is lost in villous cytotrophoblast and
    stromal cells. This imbalance of imprinted gene dosage favors
    overgrowth of trophoblast and is the molecular basis for the diagnostic
    p57 immunostain.
  cell_types:
  - preferred_term: trophoblast cell
    term:
      id: CL:0000351
      label: trophoblast cell
  biological_processes:
  - preferred_term: genomic imprinting
    modifier: ABNORMAL
    term:
      id: GO:0071514
      label: genomic imprinting
  evidence:
  - reference: PMID:22469506
    reference_title: "The genetics of gestational trophoblastic disease: a rare complication of pregnancy."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "The \nsurprising and unique androgenetic origin of complete hydatidiform molar \npregnancies was first revealed by Kajii and Ohama in 1977."
    explanation: >-
      Supports the androgenetic (paternal-only) genomic origin of complete
      hydatidiform mole, the imprinting imbalance that drives villous GTN.
  downstream:
  - target: Loss of p57 and Trophoblast Hyperproliferation
    description: Absent maternal allele silences CDKN1C/p57, releasing trophoblast growth control
- name: Loss of p57 and Trophoblast Hyperproliferation
  description: >-
    p57^KIP2 (CDKN1C) is a cyclin-dependent kinase inhibitor normally
    expressed from the maternal allele. In complete moles its loss removes a
    brake on the cell cycle in villous cytotrophoblast, contributing to the
    marked trophoblastic hyperplasia that characterizes complete mole and
    can progress to invasive mole or choriocarcinoma. Negative p57
    immunostaining of cytotrophoblast and villous stroma is used clinically
    to confirm complete mole and distinguish it from partial mole and
    non-molar abortions.
  cell_types:
  - preferred_term: mononuclear cytotrophoblast cell
    term:
      id: CL:0000523
      label: mononuclear cytotrophoblast cell
  biological_processes:
  - preferred_term: cell population proliferation
    modifier: INCREASED
    term:
      id: GO:0008283
      label: cell population proliferation
  evidence:
  - reference: PMID:33024305
    reference_title: "Refined diagnosis of hydatidiform moles with p57 immunohistochemistry and molecular genotyping: updated analysis of a prospective series of 2217 cases."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "Of 564 \nsuccessfully immunostained CHMs, 563 (99.8%) were p57-negative"
    explanation: >-
      A large prospective series shows complete hydatidiform moles are
      essentially uniformly p57-negative, supporting loss of the
      maternally-imprinted p57 product in the proliferating trophoblast of
      the principal GTN precursor.
  downstream:
  - target: Trophoblast Invasion and Hematogenous Metastasis
    description: Unchecked trophoblast proliferation acquires invasive and metastatic behavior
- name: Tumor Suppressor and Apoptosis Dysregulation
  description: >-
    Beyond imprinting-driven proliferation, malignant transformation along the
    gestational trophoblastic disease spectrum involves dysregulation of the
    p53 (TP53) tumor suppressor pathway and aberrant apoptotic signaling
    through anti-apoptotic BCL-2, together with altered growth-factor-receptor
    and microRNA expression. These changes impair the apoptotic clearance of
    proliferating trophoblast and help distinguish molar pregnancies and
    trophoblastic neoplasms from normal placental development, contributing to
    their progression from benign moles toward malignant GTN.
  genes:
  - preferred_term: TP53
    term:
      id: hgnc:11998
      label: TP53
  cell_types:
  - preferred_term: trophoblast cell
    term:
      id: CL:0000351
      label: trophoblast cell
  biological_processes:
  - preferred_term: regulation of apoptotic process
    modifier: ABNORMAL
    term:
      id: GO:0042981
      label: regulation of apoptotic process
  evidence:
  - reference: PMID:39201425
    reference_title: "Molecular Basis of Hydatidiform Moles-A Systematic Review."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "dysregulations in tumor suppressor genes such as p53, aberrant \napoptotic pathways involving BCL-2 (B-cell lymphoma)"
    explanation: >-
      A systematic review of 71 studies on the molecular basis of gestational
      trophoblastic disease identifies p53 tumor-suppressor dysregulation and
      aberrant BCL-2 apoptotic pathways as recurrent molecular alterations
      driving progression along the molar-to-malignant trophoblastic spectrum.
- name: hCG Hypersecretion by Neoplastic Syncytiotrophoblast
  description: >-
    Neoplastic syncytiotrophoblast in GTN secretes large amounts of human
    chorionic gonadotropin (hCG), recapitulating the hormone-producing
    function of normal placental syncytiotrophoblast. Circulating hCG
    correlates with tumor burden and is the central biomarker for diagnosis,
    risk scoring, treatment monitoring, and detection of relapse. Markedly
    elevated hCG can also stimulate the thyrotropin receptor (causing
    paraneoplastic hyperthyroidism) and the ovaries (theca-lutein cysts).
  cell_types:
  - preferred_term: syncytiotrophoblast cell
    term:
      id: CL:0000525
      label: syncytiotrophoblast cell
  biological_processes:
  - preferred_term: gonadotropin secretion
    modifier: INCREASED
    term:
      id: GO:0032274
      label: gonadotropin secretion
  evidence:
  - reference: PMID:20673583
    reference_title: "Gestational trophoblastic disease."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "the use of human chorionic gonadotropin as a biomarker"
    explanation: >-
      The Lancet review identifies hCG produced by trophoblastic tumors as
      the biomarker central to GTN diagnosis and monitoring, reflecting
      hormone hypersecretion by neoplastic syncytiotrophoblast.
- name: Trophoblast Invasion and Hematogenous Metastasis
  description: >-
    Normal trophoblast is physiologically invasive and angiogenic. In GTN
    these programs become deregulated: neoplastic trophoblast invades
    myometrium and uterine vessels (invasive mole) and, in choriocarcinoma,
    disseminates hematogenously to the lungs, brain, and liver. The intrinsic
    angiogenic and invasive phenotype of trophoblast accounts for the early
    vascular spread and hemorrhagic character of these tumors.
  cell_types:
  - preferred_term: extravillous trophoblast
    term:
      id: CL:0008036
      label: extravillous trophoblast
  biological_processes:
  - preferred_term: trophoblast cell migration
    modifier: INCREASED
    term:
      id: GO:0061450
      label: trophoblast cell migration
  - preferred_term: angiogenesis
    modifier: INCREASED
    term:
      id: GO:0001525
      label: angiogenesis
  evidence:
  - reference: PMID:22469506
    reference_title: "The genetics of gestational trophoblastic disease: a rare complication of pregnancy."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "Gestational choriocarcinoma is usually a rapidly spreading fatal disease"
    explanation: >-
      Supports the rapidly invasive and metastatic behavior of gestational
      choriocarcinoma, the hematogenously spreading form of GTN.
- name: PD-1/PD-L1 Adaptive Immune Resistance
  conforms_to: "immune_checkpoint_blockade#Adaptive Immune Resistance"
  description: >-
    GTN is genetically a semi-allograft (the tumor genome differs from the
    host, being wholly or partly paternal), which makes it intrinsically
    immunogenic. To evade host T-cell attack, neoplastic trophoblast
    co-opts the placental immune-tolerance program and broadly expresses the
    immune checkpoint ligand PD-L1, engaging PD-1 on tumor-infiltrating T
    cells to suppress the anti-tumor T-cell response. This adaptive immune
    resistance is the mechanistic rationale for immune checkpoint inhibitor
    therapy, which is effective even in chemoresistant, ultra-high-risk, and
    PSTT/ETT disease.
  cell_types:
  - preferred_term: T cell
    term:
      id: CL:0000084
      label: T cell
  biological_processes:
  - preferred_term: negative regulation of T cell mediated immune response to tumor cell
    modifier: INCREASED
    term:
      id: GO:0002841
      label: negative regulation of T cell mediated immune response to tumor cell
  evidence:
  - reference: PMID:37703867
    reference_title: "Immunotherapy for Gestational Trophoblastic Neoplasia: A New Paradigm."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "Immune checkpoint immunotherapy (CPI) targeting programmed cell \ndeath 1 (PD-1)/ligand (PD-L1) has been shown to be an effective treatment for \ngestational trophoblastic neoplasia (GTN)."
    explanation: >-
      The efficacy of PD-1/PD-L1 checkpoint blockade in GTN demonstrates that
      the PD-1/PD-L1 axis is an operative immune-resistance mechanism in these
      tumors.
phenotypes:
- name: Abnormal Vaginal Bleeding
  description: >-
    Irregular or persistent vaginal bleeding, often after evacuation of a
    molar pregnancy or following another gestation, is the most common
    presenting symptom of GTN.
  phenotype_term:
    preferred_term: Abnormal vaginal bleeding
    term:
      id: HP:0034263
      label: Abnormal vaginal bleeding
  evidence:
  - reference: PMID:38098552
    reference_title: "Atypical presentation of hyperthyroidism complicated complete hydatidiform mole in a 24-year-old female: a case report."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "It manifests as vaginal bleeding, accompanied \nby high levels of β-human chorionic gonadotropin (β-HCG)."
    explanation: >-
      Directly supports vaginal bleeding (with elevated hCG) as the cardinal
      presenting manifestation of trophoblastic disease.
- name: Elevated hCG
  description: >-
    Markedly elevated serum beta-human chorionic gonadotropin, often
    plateauing or rising after molar evacuation, is the biochemical
    hallmark of GTN and the basis of its diagnosis and monitoring.
  phenotype_term:
    preferred_term: Elevated circulating beta chorionic gonadotropin concentration
    term:
      id: HP:6000485
      label: Elevated circulating beta chorionic gonadotropin concentration
  evidence:
  - reference: PMID:20673583
    reference_title: "Gestational trophoblastic disease."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "the use of human chorionic gonadotropin as a biomarker"
    explanation: >-
      hCG elevation is the defining biochemical abnormality and biomarker of
      GTN.
- name: Uterine Neoplasm
  description: >-
    GTN presents as an intrauterine trophoblastic mass; invasive mole
    penetrates the myometrium, and PSTT/ETT form uterine tumors.
  phenotype_term:
    preferred_term: Uterine neoplasm
    term:
      id: HP:0010784
      label: Uterine neoplasm
  evidence:
  - reference: PMID:20739008
    reference_title: "Gestational trophoblastic disease II: classification and management of gestational trophoblastic neoplasia."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "Gestational trophoblastic neoplasia (GTN) includes invasive mole, \nchoriocarcinoma, placental site trophoblastic tumor, and epithelioid \ntrophoblastic tumor."
    explanation: >-
      The malignant trophoblastic tumors comprising GTN are uterine
      neoplasms.
- name: Pulmonary Metastasis
  description: >-
    The lungs are the most common site of metastatic GTN, particularly in
    choriocarcinoma and metastatic invasive mole; pulmonary involvement
    contributes to FIGO/WHO risk staging.
  phenotype_term:
    preferred_term: Neoplasm of the lung
    term:
      id: HP:0100526
      label: Neoplasm of the lung
  evidence:
  - reference: PMID:20739008
    reference_title: "Gestational trophoblastic disease II: classification and management of gestational trophoblastic neoplasia."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "Nonmetastatic (stage \nI) and low-risk metastatic (stages II and III, score <7) GTN"
    explanation: >-
      Staging of GTN explicitly distinguishes metastatic disease (stage III
      denotes lung metastasis), supporting pulmonary metastasis as a key
      feature of GTN.
- name: Hyperthyroidism
  description: >-
    Very high hCG levels can cross-react with the thyrotropin (TSH)
    receptor, producing paraneoplastic hyperthyroidism in some patients with
    high-burden molar disease or GTN.
  phenotype_term:
    preferred_term: Hyperthyroidism
    term:
      id: HP:0000836
      label: Hyperthyroidism
  evidence:
  - reference: PMID:38098552
    reference_title: "Atypical presentation of hyperthyroidism complicated complete hydatidiform mole in a 24-year-old female: a case report."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "Hyperthyroidism is a result of extremely high levels of β-HCG levels due to \nmolecular cross-reactivity."
    explanation: >-
      Directly supports hCG-mediated (TSH-receptor cross-reactivity)
      hyperthyroidism as a paraneoplastic complication of high-hCG molar /
      trophoblastic disease.
biochemical:
- name: Human Chorionic Gonadotropin (hCG)
  presence: INCREASED
  notes: >-
    Serum beta-hCG is the principal biomarker of GTN. Levels are markedly
    increased and reflect tumor burden; they are used for diagnosis (plateau
    or rise after molar evacuation), FIGO/WHO risk scoring, monitoring of
    treatment response, and detection of relapse.
  evidence:
  - reference: PMID:20673583
    reference_title: "Gestational trophoblastic disease."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "the use of human chorionic gonadotropin as a biomarker"
    explanation: >-
      Establishes hCG as the central biochemical biomarker for GTN diagnosis
      and monitoring.
genetic:
- name: Androgenetic Diploid Genome (Complete Mole Precursor)
  notes: >-
    The complete hydatidiform mole that precedes most villous GTN is
    diploid but entirely paternal in origin, most often from duplication of
    a single sperm genome (monospermic/homozygous) and less often from
    dispermic fertilization. This androgenetic constitution leads to loss of
    maternally-expressed imprinted genes including CDKN1C (p57).
  evidence:
  - reference: PMID:33024305
    reference_title: "Refined diagnosis of hydatidiform moles with p57 immunohistochemistry and molecular genotyping: updated analysis of a prospective series of 2217 cases."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "Of 153 genotyped \nCHMs, 148 (96.7%) were androgenetic (85% monospermic)"
    explanation: >-
      Genotyping of complete moles confirms a predominantly androgenetic,
      mostly monospermic origin, the genetic basis of the GTN precursor.
- name: Recurrent Mole Predisposition Genes (Meiosis I / Maternal-Effect)
  gene_term:
    preferred_term: HFM1
    term:
      id: hgnc:20193
      label: HFM1
  inheritance:
  - name: Autosomal recessive
  notes: >-
    Familial recurrent hydatidiform mole, a precursor condition that
    elevates lifetime GTN risk through repeated molar pregnancies, is caused
    by biallelic variants in maternal-effect and meiosis-I genes. Exome
    sequencing of women with recurrent androgenetic moles negative for the
    classic maternal-effect genes (NLRP7, KHDC3L) identified biallelic
    deleterious variants in the meiosis-I genes FOXL2, MAJIN, KASH5, SYCP2,
    MEIOB, and HFM1; these defects impair oocyte meiosis and de novo
    methylation, predisposing to androgenetic conceptions. HFM1 is used here
    as the gene anchor for this meiosis-I gene set.
  evidence:
  - reference: PMID:39545410
    reference_title: "Defects in meiosis I contribute to the genesis of androgenetic hydatidiform moles."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "We identified biallelic deleterious variants in 6 \ngenes, FOXL2, MAJIN, KASH5, SYCP2, MEIOB, and HFM1, in patients with \nandrogenetic HMs"
    explanation: >-
      Exome sequencing identifies biallelic meiosis-I gene variants
      (including HFM1) as a recessive cause of recurrent androgenetic moles,
      a predisposing genetic background for GTN.
treatments:
- name: Suction Evacuation / Dilation and Curettage
  description: >-
    Uterine evacuation by suction curettage is the primary management of
    hydatidiform mole and is followed by serial hCG monitoring to detect
    postmolar GTN.
  treatment_term:
    preferred_term: Dilation and Curettage
    term:
      id: NCIT:C15226
      label: Dilation and Curettage
  evidence:
  - reference: PMID:20728069
    reference_title: "Gestational trophoblastic disease I: epidemiology, pathology, clinical presentation and diagnosis of gestational trophoblastic disease, and management of hydatidiform mole."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "Particular emphasis is given to management of hydatidiform mole, including \nevacuation"
    explanation: >-
      Evacuation of the molar pregnancy is the cornerstone of hydatidiform
      mole management and the prelude to GTN surveillance.
- name: Single-Agent Methotrexate
  description: >-
    Single-agent methotrexate (or dactinomycin) is the standard treatment
    for low-risk (FIGO score <7) GTN, achieving cure rates approaching 100%.
  therapeutic_modality: SMALL_MOLECULE
  treatment_term:
    preferred_term: chemotherapy
    term:
      id: MAXO:0000647
      label: chemotherapy
    therapeutic_agent:
    - preferred_term: methotrexate
      term:
        id: CHEBI:44185
        label: methotrexate
  evidence:
  - reference: PMID:20739008
    reference_title: "Gestational trophoblastic disease II: classification and management of gestational trophoblastic neoplasia."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "low-risk metastatic (stages II and III, score <7) GTN can be treated with \nsingle-agent chemotherapy resulting in a survival rate approaching 100%."
    explanation: >-
      Establishes single-agent chemotherapy (methotrexate or dactinomycin)
      as curative treatment for low-risk GTN.
- name: Single-Agent Dactinomycin
  description: >-
    Dactinomycin (actinomycin D) is the alternative single agent for
    low-risk GTN, used as first line in some centers and as salvage for
    methotrexate-resistant low-risk disease.
  therapeutic_modality: SMALL_MOLECULE
  treatment_term:
    preferred_term: chemotherapy
    term:
      id: MAXO:0000647
      label: chemotherapy
    therapeutic_agent:
    - preferred_term: actinomycin D
      term:
        id: CHEBI:27666
        label: actinomycin D
  evidence:
  - reference: PMID:20739008
    reference_title: "Gestational trophoblastic disease II: classification and management of gestational trophoblastic neoplasia."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "low-risk metastatic (stages II and III, score <7) GTN can be treated with \nsingle-agent chemotherapy resulting in a survival rate approaching 100%."
    explanation: >-
      Single-agent chemotherapy for low-risk GTN includes dactinomycin as a
      standard option.
- name: Multiagent Chemotherapy (EMA/CO)
  description: >-
    High-risk GTN (FIGO/WHO score >=7) requires multiagent chemotherapy,
    most commonly the EMA/CO regimen (etoposide, methotrexate, dactinomycin,
    cyclophosphamide, vincristine), with or without adjuvant surgery and
    radiation, achieving survival of 80-90%.
  treatment_term:
    preferred_term: chemotherapy
    term:
      id: MAXO:0000647
      label: chemotherapy
    therapeutic_agent:
    - preferred_term: etoposide
      term:
        id: CHEBI:4911
        label: etoposide
    - preferred_term: methotrexate
      term:
        id: CHEBI:44185
        label: methotrexate
    - preferred_term: actinomycin D
      term:
        id: CHEBI:27666
        label: actinomycin D
    - preferred_term: cyclophosphamide
      term:
        id: CHEBI:4027
        label: cyclophosphamide
    - preferred_term: vincristine
      term:
        id: CHEBI:28445
        label: vincristine
  evidence:
  - reference: PMID:20739008
    reference_title: "Gestational trophoblastic disease II: classification and management of gestational trophoblastic neoplasia."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "High-risk GTN (stages II-IV, score ≥7) requires initial multiagent chemotherapy \nwith or without adjuvant radiation and surgery to achieve a survival rate of \n80-90%."
    explanation: >-
      Establishes multiagent chemotherapy (e.g., EMA/CO) as the standard for
      high-risk GTN.
- name: Hysterectomy
  description: >-
    Hysterectomy is the primary treatment for localized placental-site
    trophoblastic tumor and epithelioid trophoblastic tumor, which are
    relatively chemoresistant, and is an option for other GTN in women who
    have completed childbearing.
  therapeutic_modality: SURGERY
  treatment_term:
    preferred_term: Hysterectomy
    term:
      id: NCIT:C15256
      label: Hysterectomy
  evidence:
  - reference: PMID:20739008
    reference_title: "Gestational trophoblastic disease II: classification and management of gestational trophoblastic neoplasia."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "High-risk GTN (stages II-IV, score ≥7) requires initial multiagent chemotherapy \nwith or without adjuvant radiation and surgery"
    explanation: >-
      Surgery (including hysterectomy) is part of multimodal GTN management,
      and is the mainstay for chemoresistant intermediate-trophoblast
      tumors (PSTT/ETT).
- name: Immune Checkpoint Inhibitor Therapy (Anti-PD-1/PD-L1)
  description: >-
    PD-1/PD-L1 immune checkpoint inhibitors (e.g., pembrolizumab, avelumab,
    nivolumab) are an emerging treatment for GTN, with notable activity in
    multidrug-resistant, ultra-high-risk, and inherently chemoresistant
    PSTT/ETT, and emerging evidence in low-risk disease. They exploit the
    tumor's reliance on PD-L1-mediated adaptive immune resistance.
  therapeutic_modality: MONOCLONAL_ANTIBODY
  target_mechanisms:
  - target: PD-1/PD-L1 Adaptive Immune Resistance
    treatment_effect: INHIBITS
    description: >-
      Checkpoint blockade releases tumor-infiltrating T cells from
      PD-1/PD-L1 inhibition, restoring anti-trophoblast immunity.
  treatment_term:
    preferred_term: Pharmacotherapy
    term:
      id: NCIT:C15986
      label: Pharmacotherapy
    therapeutic_agent:
    - preferred_term: pembrolizumab
      term:
        id: NCIT:C106432
        label: Pembrolizumab
  evidence:
  - reference: PMID:37703867
    reference_title: "Immunotherapy for Gestational Trophoblastic Neoplasia: A New Paradigm."
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "This includes those with multidrug \nresistance, ultra-high-risk disease, and epithelioid trophoblastic \ntumour/placental site trophoblastic tumour subtypes that are inherently \nchemotherapy resistant, but there is also emerging evidence in low-risk disease."
    explanation: >-
      A systematic review reports checkpoint inhibitor efficacy across
      multidrug-resistant, ultra-high-risk, and chemoresistant PSTT/ETT GTN,
      supporting anti-PD-1/PD-L1 therapy as a treatment option.
classifications:
  harrisons_chapter:
  - classification_value: ONCOLOGY_HEMATOLOGY
references:
- reference: PMID:20673583
  title: "Gestational trophoblastic disease."
- reference: PMID:20739008
  title: "Gestational trophoblastic disease II: classification and management of gestational trophoblastic neoplasia."
- reference: PMID:20728069
  title: "Gestational trophoblastic disease I: epidemiology, pathology, clinical presentation and diagnosis of gestational trophoblastic disease, and management of hydatidiform mole."
- reference: PMID:22469506
  title: "The genetics of gestational trophoblastic disease: a rare complication of pregnancy."
- reference: PMID:33024305
  title: "Refined diagnosis of hydatidiform moles with p57 immunohistochemistry and molecular genotyping: updated analysis of a prospective series of 2217 cases."
- reference: PMID:37703867
  title: "Immunotherapy for Gestational Trophoblastic Neoplasia: A New Paradigm."
- reference: PMID:39545410
  title: "Defects in meiosis I contribute to the genesis of androgenetic hydatidiform moles."
- reference: PMID:39201425
  title: "Molecular Basis of Hydatidiform Moles-A Systematic Review."
- reference: PMID:38098552
  title: "Atypical presentation of hyperthyroidism complicated complete hydatidiform mole in a 24-year-old female: a case report."
📚

References & Deep Research

References

9
PMID:20673583
Gestational trophoblastic disease.
No top-level findings curated for this source.
PMID:20739008
Gestational trophoblastic disease II: classification and management of gestational trophoblastic neoplasia.
No top-level findings curated for this source.
PMID:20728069
Gestational trophoblastic disease I: epidemiology, pathology, clinical presentation and diagnosis of gestational trophoblastic disease, and management of hydatidiform mole.
No top-level findings curated for this source.
PMID:22469506
The genetics of gestational trophoblastic disease: a rare complication of pregnancy.
No top-level findings curated for this source.
PMID:33024305
Refined diagnosis of hydatidiform moles with p57 immunohistochemistry and molecular genotyping: updated analysis of a prospective series of 2217 cases.
No top-level findings curated for this source.
PMID:37703867
Immunotherapy for Gestational Trophoblastic Neoplasia: A New Paradigm.
No top-level findings curated for this source.
PMID:39545410
Defects in meiosis I contribute to the genesis of androgenetic hydatidiform moles.
No top-level findings curated for this source.
PMID:39201425
Molecular Basis of Hydatidiform Moles-A Systematic Review.
No top-level findings curated for this source.
PMID:38098552
Atypical presentation of hyperthyroidism complicated complete hydatidiform mole in a 24-year-old female: a case report.
No top-level findings curated for this source.

Deep Research

1
Falcon ▸
Disease Characteristics Research Template
Edison Scientific Literature 41 citations 2026-06-15T21:45:15.315778

Question: You are an expert researcher providing comprehensive, well-cited information.

Provide detailed information focusing on: 1. Key concepts and definitions with current understanding 2. Recent developments and latest research (prioritize 2023-2024 sources) 3. Current applications and real-world implementations 4. Expert opinions and analysis from authoritative sources 5. Relevant statistics and data from recent studies

Format as a comprehensive research report with proper citations. Include URLs and publication dates where available. Always prioritize recent, authoritative sources and provide specific citations for all major claims.

Disease Characteristics Research Template

Target Disease

  • Disease Name: Gestational Trophoblastic Neoplasm
  • MONDO ID: (if available)
  • Category:

Research Objectives

Please provide a comprehensive research report on Gestational Trophoblastic Neoplasm covering all of the disease characteristics listed below. This report will be used to populate a disease knowledge base entry. Be thorough and cite primary literature (PMID preferred) for all claims.

For each section, suggested databases/resources are listed. These are the first places you should search for information on each topic.

1. Disease Information

Search first: OMIM, Orphanet, ICD-10/ICD-11, MeSH, PubMed

  • What is the disease? Provide a concise overview.
  • What are the key identifiers? (OMIM, Orphanet, ICD-10/ICD-11, MeSH, Mondo)
  • What are the common synonyms and alternative names?
  • Is the information derived from individual patients (e.g., EHR) or aggregated disease-level resources?

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  • Risk Factors:

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For each phenotype, provide: - Phenotype type: symptoms, clinical signs, physical manifestations, behavioral changes, or laboratory abnormalities

For symptoms/signs: HPO, OMIM, Orphanet, PubMed For behavioral changes: HPO, DSM, RDoC (Research Domain Criteria), PubMed For laboratory abnormalities: LOINC, SNOMED CT, LabTests Online, PubMed - Phenotype characteristics: Search first: OMIM, Orphanet, HPO, PubMed - Age of symptom onset (neonatal, childhood, adult-onset, late-onset) - Symptom severity (mild, moderate, severe, variable) - Symptom progression (stable, progressive, episodic, fluctuating) - Frequency among affected individuals (percentage or qualitative) - Quality of life impact: Effects on daily functioning and well-being (per-phenotype when possible) Search first: EQ-5D database, SF-36, WHO QOL databases, PubMed - Suggest HPO (Human Phenotype Ontology) terms for each phenotype

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6. Mechanism / Pathophysiology

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  • Single-cell analysis findings (cell-type specific mechanisms, cellular heterogeneity) > Search first: Human Cell Atlas, Single Cell Portal, GEO, CELLxGENE
  • Spatial transcriptomics findings > Search first: GEO, Spatial Research, Vizgen, 10x Genomics data
  • Multi-omics integration results > Search first: TCGA, ICGC, cBioPortal, LinkedOmics, PubMed
  • Functional genomics screens (CRISPR, RNAi) > Search first: DepMap, GenomeRNAi, PubMed, BioGRID ORCS

For each mechanism, describe: - The causal chain from initial trigger to clinical manifestation - Which mechanisms are upstream vs downstream - What cell types and biological processes are involved - Suggest GO terms for biological processes and CL terms for cell types

7. Anatomical Structures Affected

  • Organ Level:
  • Primary organs directly affected
  • Secondary organ involvement (complications, secondary effects)
  • Body systems involved (cardiovascular, nervous, digestive, respiratory, endocrine, etc.)

    Search first: Uberon, FMA (Foundational Model of Anatomy), OMIM, HPO, ICD-11, MeSH, SNOMED CT

  • Tissue and Cell Level:
  • Specific tissue types affected (epithelial, connective, muscle, nervous)
  • Specific cell populations targeted (with Cell Ontology terms)

    Search first: Uberon, Human Protein Atlas, Cell Ontology, Human Cell Atlas, CellMarker, PanglaoDB

  • Subcellular Level:
  • Cellular compartments involved (mitochondria, nucleus, ER, lysosomes) (with GO Cellular Component terms)

    Search first: Gene Ontology (Cellular Component), UniProt, Human Protein Atlas

  • Localization:
  • Specific anatomical sites (with UBERON terms) > Search first: FMA, Uberon, NeuroNames (for brain), SNOMED CT
  • Lateralization (unilateral, bilateral, asymmetric) > Search first: HPO, clinical literature, imaging databases

8. Temporal Development

  • Onset:
  • Typical age of onset (congenital, pediatric, adult, geriatric)
  • Onset pattern (acute, subacute, chronic, insidious)

    Search first: OMIM, Orphanet, HPO, PubMed

  • Progression:
  • Disease stages (early, intermediate, advanced, end-stage) > Search first: Cancer Staging Manual (AJCC), WHO classifications, PubMed
  • Progression rate (rapid, slow, variable)
  • Disease course pattern (episodic, relapsing-remitting, progressive, stable)
  • Disease duration (self-limited, chronic lifelong)

    Search first: Disease registries, longitudinal cohort databases, natural history studies, PubMed, Orphanet, OMIM

  • Patterns:
  • Remission patterns (spontaneous, treatment-induced) > Search first: Clinical trial databases, disease registries, PubMed
  • Critical periods (time windows of vulnerability or opportunity for intervention) > Search first: PubMed, developmental biology databases, clinical guidelines

9. Inheritance and Population

  • Epidemiology:
  • Prevalence (cases per 100,000 at given time)
  • Incidence (new cases per 100,000 per year)

    Search first: Orphanet, CDC, WHO, GBD (Global Burden of Disease), national registries, SEER, disease registries

  • For Genetic Etiology:
  • Inheritance pattern (AD, AR, X-linked, mitochondrial, multifactorial, polygenic) > Search first: OMIM, Orphanet, ClinVar, GTR (Genetic Testing Registry)
  • Penetrance (complete, incomplete, age-dependent) > Search first: ClinVar, OMIM, PubMed, ClinGen
  • Expressivity (variable, consistent) > Search first: OMIM, ClinVar, PubMed
  • Genetic anticipation (increasing severity in successive generations) > Search first: OMIM, PubMed (especially for repeat expansion disorders)
  • Germline mosaicism > Search first: ClinVar, OMIM, genetic counseling literature, PubMed
  • Founder effects (population-specific mutations) > Search first: gnomAD, population genetics databases, PubMed
  • Consanguinity role > Search first: OMIM, population studies, genetic counseling resources
  • Carrier frequency > Search first: gnomAD, carrier screening databases, GeneReviews, GTR
  • Population Demographics:
  • Affected populations (ethnic or demographic groups with higher prevalence) > Search first: gnomAD, 1000 Genomes, PAGE Study, PubMed, population registries
  • Geographic distribution (endemic areas, regional variation) > Search first: WHO, CDC, GBD, Orphanet, geographic epidemiology databases
  • Geographic distribution of specific variants
  • Sex ratio (male:female) > Search first: Disease registries, OMIM, PubMed, epidemiological databases
  • Age distribution of affected individuals > Search first: CDC, disease registries, SEER, Orphanet

10. Diagnostics

  • Clinical Tests:
  • Laboratory tests (blood, urine, tissue chemistry, specific enzyme assays) > Search first: LOINC, LabTests Online, PubMed
  • Biomarkers (proteins, metabolites, genetic markers, circulating biomarkers) > Search first: FDA Biomarker List, BEST (Biomarkers, EndpointS, and other Tools), PubMed
  • Imaging studies (X-ray, CT, MRI, PET, ultrasound) > Search first: RadLex, DICOM, Radiopaedia, imaging databases
  • Functional tests (pulmonary function, cardiac stress tests) > Search first: LOINC, clinical guidelines, PubMed
  • Electrophysiology (EEG, EMG, ECG, nerve conduction studies) > Search first: LOINC, clinical neurophysiology databases, PubMed
  • Biopsy findings (histopathology, immunohistochemistry) > Search first: SNOMED CT, College of American Pathologists resources, PubMed
  • Pathology findings (microscopic examination) > Search first: SNOMED CT, Digital Pathology databases, PubMed
  • Genetic Testing:

    Search first: GTR (Genetic Testing Registry), GeneReviews, ClinGen

  • Overview of recommended genetic testing approach
  • Whole genome sequencing (WGS) utility > Search first: GTR, ClinVar, GEL (Genomics England), gnomAD
  • Whole exome sequencing (WES) utility > Search first: GTR, ClinVar, OMIM, GeneMatcher
  • Gene panels (which panels, which genes) > Search first: GTR, ClinVar, laboratory-specific databases
  • Single gene testing > Search first: GTR, ClinVar, OMIM, GeneReviews
  • Chromosomal microarray (CMA) > Search first: DECIPHER, ClinVar, dbVar, ECARUCA
  • Karyotyping > Search first: Chromosome Abnormality Database, ClinVar, cytogenetics resources
  • FISH > Search first: ClinVar, cytogenetics databases, PubMed
  • Mitochondrial DNA testing > Search first: MITOMAP, MSeqDR, ClinVar, GTR
  • Repeat expansion testing > Search first: GTR, ClinVar, repeat expansion databases, PubMed
  • Omics-Based Diagnostics (if applicable):
  • RNA sequencing / transcriptomics > Search first: GEO, ArrayExpress, GTEx, RNA-seq databases
  • Proteomics > Search first: PRIDE, ProteomeXchange, FDA Biomarker database
  • Metabolomics > Search first: MetaboLights, Metabolomics Workbench, HMDB
  • Epigenomics > Search first: GEO, ENCODE, Roadmap Epigenomics, MethBase
  • Liquid biopsy > Search first: COSMIC, ClinVar, liquid biopsy databases, PubMed
  • Clinical Criteria:
  • Standardized diagnostic criteria (DSM, ICD, society guidelines) > Search first: DSM-5, ICD-11, clinical society guidelines, UpToDate
  • Differential diagnosis (other conditions to rule out, with distinguishing features) > Search first: DynaMed, UpToDate, clinical decision support systems
  • Screening:
  • Screening methods for asymptomatic individuals (newborn screening, carrier screening, cascade screening) > Search first: ACMG recommendations, CDC newborn screening, GTR

11. Outcome/Prognosis

  • Survival and Mortality:
  • Survival rate (5-year, 10-year, overall) > Search first: SEER, cancer registries, disease-specific registries, PubMed
  • Life expectancy (with and without treatment if applicable) > Search first: Orphanet, disease registries, actuarial databases, PubMed
  • Mortality rate > Search first: CDC, WHO, GBD, national mortality databases
  • Disease-specific mortality (deaths directly attributable to disease) > Search first: Disease registries, CDC Wonder, GBD, PubMed
  • Morbidity and Function:
  • Morbidity (disease-related disability and health impacts) > Search first: GBD, WHO, disability databases, PubMed
  • Disability outcomes (long-term functional impairments) > Search first: ICF (International Classification of Functioning), disability registries
  • Quality of life measures (EQ-5D, SF-36, PROMIS, disease-specific tools) > Search first: EQ-5D database, SF-36, PROMIS, PubMed
  • Disease Course:
  • Complications (secondary problems: infections, organ failure, etc.) > Search first: ICD codes, disease registries, clinical databases, PubMed
  • Recovery potential (likelihood and extent of recovery, with vs without treatment) > Search first: Natural history studies, rehabilitation databases, PubMed
  • Prediction:
  • Prognostic factors (age, disease severity, biomarkers, treatment response) > Search first: Prognostic models databases, clinical calculators, PubMed
  • Prognostic biomarkers (molecular markers predicting disease course) > Search first: FDA Biomarker database, PubMed, cancer prognostic databases

12. Treatment

  • Pharmacotherapy:
  • Pharmacological treatments (drug names, drug classes, mechanisms of action) > Search first: DrugBank, RxNorm, ATC classification, DailyMed, FDA databases
  • Pharmacogenomics (how genetic variants affect drug metabolism, efficacy, toxicity) > Search first: PharmGKB, CPIC (Clinical Pharmacogenetics), FDA Table of PGx Biomarkers
  • Advanced Therapeutics:
  • Gene therapy (viral vectors, CRISPR, gene replacement, gene editing) > Search first: ClinicalTrials.gov, FDA gene therapy database, ASGCT resources
  • Cell therapy (stem cell transplant, CAR-T, cellular therapeutics) > Search first: ClinicalTrials.gov, FDA cell therapy database, FACT standards
  • RNA-based therapies (ASOs, siRNA, mRNA therapies) > Search first: ClinicalTrials.gov, FDA approvals, PubMed
  • Targeted therapies (treatments directed at specific molecular targets) > Search first: My Cancer Genome, OncoKB, ClinicalTrials.gov, FDA approvals
  • Immunotherapies (checkpoint inhibitors, monoclonal antibodies) > Search first: Cancer Immunotherapy Database, FDA approvals, ClinicalTrials.gov
  • Surgical and Interventional:
  • Surgical interventions (types of surgery, timing, outcomes) > Search first: CPT codes, surgical registries, clinical guidelines, PubMed
  • Supportive and Rehabilitative:
  • Supportive care (symptom management, pain control, nutrition) > Search first: Clinical guidelines, Cochrane Library, PubMed
  • Rehabilitation (physical therapy, occupational therapy, speech therapy) > Search first: Rehabilitation medicine databases, clinical guidelines, PubMed
  • Experimental:
  • Experimental treatments in clinical trials (with NCT identifiers if available) > Search first: ClinicalTrials.gov, EU Clinical Trials Register, WHO ICTRP
  • Treatment Outcomes:
  • Treatment response rates > Search first: Clinical trial databases, FDA reviews, systematic reviews, PubMed
  • Side effects and adverse events > Search first: FDA Adverse Event Reporting System (FAERS), MedWatch, PubMed
  • Treatment Strategy:
  • Treatment algorithms (clinical pathways, decision trees) > Search first: Clinical practice guidelines, NCCN Guidelines, UpToDate
  • Combination therapies > Search first: ClinicalTrials.gov, treatment guidelines, PubMed
  • Personalized medicine approaches (genotype-guided treatment) > Search first: My Cancer Genome, CIViC, PharmGKB, precision medicine databases

For each treatment, suggest MAXO (Medical Action Ontology) terms where applicable.

13. Prevention

  • Prevention Levels:
  • Primary prevention (preventing disease occurrence: vaccination, risk factor modification) > Search first: CDC, WHO, USPSTF recommendations, Cochrane Library
  • Secondary prevention (early detection and treatment: screening programs, early intervention) > Search first: USPSTF, CDC screening guidelines, WHO
  • Tertiary prevention (preventing complications in those with disease) > Search first: Clinical guidelines, disease management protocols, PubMed
  • Immunization: Vaccine strategies (if applicable)

    Search first: CDC vaccine schedules, WHO immunization, FDA vaccine database

  • Screening and Early Detection:
  • Screening programs (population-based: newborn screening, cancer screening) > Search first: CDC screening programs, USPSTF, cancer screening databases
  • Genetic screening (carrier screening, preimplantation genetic diagnosis, prenatal testing) > Search first: ACMG recommendations, ACOG guidelines, GTR
  • Risk stratification (identifying high-risk individuals for targeted prevention) > Search first: Risk prediction models, clinical calculators, PubMed
  • Behavioral Interventions: Lifestyle modifications to reduce risk

    Search first: CDC, WHO, behavioral intervention databases, Cochrane Library

  • Counseling: Genetic counseling (risk assessment, family planning guidance)

    Search first: NSGC resources, ACMG guidelines, GeneReviews

  • Public Health:
  • Public health interventions (sanitation, vector control, health education) > Search first: CDC, WHO, public health databases, PubMed
  • Environmental interventions (reducing environmental risk factors) > Search first: EPA databases, WHO environmental health, PubMed
  • Prophylaxis: Preventive medications or procedures

    Search first: Clinical guidelines, FDA approvals, PubMed

14. Other Species / Natural Disease

  • Taxonomy: Species affected (with NCBI Taxon identifiers)

    Search first: NCBI Taxonomy

  • Breed: Specific breeds affected (with VBO identifiers if applicable)

    Search first: VBO (Vertebrate Breed Ontology)

  • Gene: Orthologous genes in other species (with NCBI Gene IDs)

    Search first: NCBI Gene

  • Natural Disease:
  • Naturally occurring disease in other species (companion animals, wildlife) > Search first: OMIA (Online Mendelian Inheritance in Animals), VetCompass, PubMed
  • Veterinary relevance and importance in animal health > Search first: OMIA, veterinary databases, PubMed
  • Comparative Biology:
  • Comparative pathology (similarities and differences across species) > Search first: OMIA, comparative pathology databases, PubMed
  • Evolutionary conservation of disease mechanisms > Search first: HomoloGene, OrthoMCL, Alliance of Genome Resources
  • Transmission (if applicable):
  • Zoonotic potential > Search first: CDC zoonotic diseases, WHO zoonoses, GIDEON
  • Cross-species susceptibility > Search first: NCBI Taxonomy, veterinary databases, PubMed

15. Model Organisms

  • Model Types:
  • Model organism type (mammalian, invertebrate, cellular, in vitro) > Search first: Alliance of Genome Resources, model organism databases
  • Specific model systems (mouse, rat, zebrafish, Drosophila, C. elegans, yeast, cell lines, organoids, iPSCs) > Search first: MGI, RGD, ZFIN, FlyBase, WormBase, SGD, ATCC, Cellosaurus
  • Induced models (drug treatment, surgical intervention, environmental manipulation) > Search first: MGI, model organism databases, PubMed
  • Genetic Models:
  • Types available (knockout, knock-in, transgenic, conditional, humanized) > Search first: MGI, IMPC, KOMP, EuMMCR, IMSR
  • Model Characteristics:
  • Phenotype recapitulation (how well model reproduces human disease features) > Search first: Model organism databases, comparative studies, PubMed
  • Model limitations (aspects of human disease not captured) > Search first: Model organism databases, PubMed, review articles
  • Applications:
  • Research applications (what aspects of disease can be studied) > Search first: Model organism databases, PubMed
  • Resources:
  • Model databases > Search first: MGI, RGD, ZFIN, FlyBase, WormBase, IMSR, EMMA, MMRRC

Citation Requirements

  • Cite primary literature (PMID preferred) for all mechanistic and clinical claims
  • Prioritize recent reviews and landmark papers
  • Include direct quotes from abstracts where possible to support key statements
  • Distinguish evidence source types: human clinical, model organism, in vitro, computational

Output Format

Structure your response as a comprehensive narrative organized by the sections above. For each section, provide: - Factual content with specific details (numbers, percentages, gene names, variant nomenclature) - Ontology term suggestions (HPO, GO, CL, UBERON, CHEBI, MAXO, MONDO) where applicable - Evidence citations with PMIDs - Direct quotes from abstracts to support key claims - Clear indication when information is not available or not applicable for this disease

This report will be used to populate a disease knowledge base entry with: - Pathophysiology descriptions with causal chains - Gene/protein annotations (HGNC, GO terms) - Phenotype associations (HP terms) with frequencies - Cell type involvement (CL terms) - Anatomical locations (UBERON terms) - Chemical entities (CHEBI terms) - Treatment annotations (MAXO terms) - Evidence items with PMIDs and exact abstract quotes - Epidemiology, prognosis, diagnostic, and prevention information - Animal model descriptions with phenotype recapitulation details

Gestational Trophoblastic Neoplasm (GTN) — Comprehensive Research Report (2023–2024 prioritized)

Target Disease

  • Disease name: Gestational Trophoblastic Neoplasm (GTN) (a malignant subset within gestational trophoblastic disease, GTD) (senat2024gestationaltrophoblasticdisease pages 1-4, jinkai2024prognosticatinggestationaltrophoblastic pages 1-2)
  • Category: Pregnancy-associated trophoblastic malignancies / gynecologic oncology (jinkai2024prognosticatinggestationaltrophoblastic pages 1-2)
  • MONDO / Orphanet: Not identified in the retrieved sources (limitation of this tool run).

Executive summary (current understanding)

Gestational trophoblastic neoplasia (GTN) is a spectrum of rare pregnancy-associated malignancies derived from gestational trophoblastic cells and classically includes invasive mole, choriocarcinoma, placental site trophoblastic tumor (PSTT), and epithelioid trophoblastic tumor (ETT) (jinkai2024prognosticatinggestationaltrophoblastic pages 1-2, senat2024gestationaltrophoblasticdisease pages 1-4). GTN is typically diagnosed clinically after a pregnancy event—most commonly after a molar pregnancy—using standardized serial human chorionic gonadotropin (hCG) criteria and subsequently staged and risk-stratified using FIGO anatomical staging and WHO/FIGO prognostic scoring (senat2024gestationaltrophoblasticdisease pages 4-7, senat2024gestationaltrophoblasticdisease pages 7-11, jinkai2024prognosticatinggestationaltrophoblastic pages 1-2). Modern treatment achieves very high cure rates overall (>90% in aggregated reports), and immune checkpoint inhibitors have become a major recent development for chemotherapy-resistant disease, including PSTT/ETT subtypes that are relatively chemotherapy resistant (senat2024gestationaltrophoblasticdisease pages 7-11, baas2024immunotherapyforgestational pages 1-2, baas2024immunotherapyforgestational pages 4-5).

1. Disease information

1.1 What is GTN?

GTN is a malignant subset of GTD that arises from abnormal proliferation/transformation of trophoblast after conception, and can follow any pregnancy (molar pregnancy, miscarriage, ectopic pregnancy, or term pregnancy) (senat2024gestationaltrophoblasticdisease pages 4-7, li2023gestationaltrophoblasticneoplasia pages 4-6). In a contemporary GTD review, WHO classification is described as dividing GTD into “tumor-like lesions, molar pregnancies and gestational trophoblastic neoplasms (GTN)” (senat2024gestationaltrophoblasticdisease pages 1-4).

1.2 Key concepts/definitions

  • Post-molar GTN (clinical diagnosis): persistent elevation or rising hCG after molar evacuation (senat2024gestationaltrophoblasticdisease pages 4-7, senat2024gestationaltrophoblasticdisease pages 1-4).
  • Core biomarker concept: trophoblastic lesions produce hCG, enabling sensitive monitoring for diagnosis and treatment response (jinkai2024prognosticatinggestationaltrophoblastic pages 1-2, senat2024gestationaltrophoblasticdisease pages 7-11).

1.3 Key identifiers (codes found in retrieved sources)

The retrieved literature contained multiple ICD-10 and ICD-O morphology codes used in epidemiology/registry studies: - ICD-10 codes (examples used in studies of GTD/GTN): O01.0, O01.1, O01.9, D39.1, C58 (roszkowskiUnknownyearincidênciaemortalidade pages 1-10); O01.0, O01.1 (munyakarama2024gestationaltrophoblasticdisease pages 32-36); D39.2 also appeared in one clinical cohort (srijaipracharoen2020reproductiveoutcomesafter pages 1-2). - ICD-O morphology codes mapping to GTN entities: M9100/1 (invasive mole), 9100/3 (choriocarcinoma), 9104/1 (PSTT), 9105/3 (ETT) (srijaipracharoen2020reproductiveoutcomesafter pages 1-2).

MeSH / ICD-11 / MONDO / Orphanet identifiers: not present in the retrieved excerpts (limitation).

1.4 Synonyms/alternative names

  • “Gestational trophoblastic neoplasia” (GTN), “malignant gestational trophoblastic disease,” “persistent trophoblastic disease” (as a post-molar entity), and entity-level diagnoses: invasive mole, gestational choriocarcinoma, PSTT, ETT (senat2024gestationaltrophoblasticdisease pages 4-7, jinkai2024prognosticatinggestationaltrophoblastic pages 1-2, tempfer2023gestationalandnongestational pages 6-7).

1.5 Evidence source type

Most GTN characterization here is derived from aggregated disease-level resources (guidelines/reviews) (tempfer2023gestationalandnongestational pages 4-5, jinkai2024prognosticatinggestationaltrophoblastic pages 1-2) and supplemented by trial-level evidence for immunotherapy (patel2024aphaseii pages 1-3, braga2023immunotherapyinthe pages 4-5) and registry/observational cohorts for epidemiology and risk factors (tempfer2023gestationalandnongestational pages 4-5, munyakarama2024gestationaltrophoblasticdisease pages 22-26).

2. Etiology

2.1 Disease causal factors (mechanistic overview)

GTN arises from malignant transformation of placental trophoblast, typically after molar pregnancy but also after other gestations (senat2024gestationaltrophoblasticdisease pages 4-7, li2023gestationaltrophoblasticneoplasia pages 4-6). The neoplastic trophoblast’s endocrine function (hCG production) is central to detection and monitoring (jinkai2024prognosticatinggestationaltrophoblastic pages 1-2).

2.2 Risk factors (with data where available)

Maternal age extremes - Increased incidence has been reported in patients “under 20 years of age and … over 40 years of age,” and a review notes about 20% of GTNs occur in teenage pregnancies (senat2024gestationaltrophoblasticdisease pages 4-7). - A registry-based analysis summarized in one 2024 paper reported increased odds of hydatidiform mole for women <20 (~2×) and >35 (~1.5×) relative to 20–29 years (p=0.02) and higher malignant progression in women >40 (20% vs 13% for <40) (munyakarama2024gestationaltrophoblasticdisease pages 22-26).

Prior molar pregnancy / complete mole - Prior complete hydatidiform mole is emphasized as a strong risk factor for subsequent GTN (senat2024gestationaltrophoblasticdisease pages 4-7). - Progression rates reported in a 2024 review table: ~7–30% following complete mole vs ~2.5–7.5% following partial mole (senat2024gestationaltrophoblasticdisease pages 4-7).

Geography/ethnicity - Incidence varies regionally: 0.57–1.1 per 1,000 pregnancies in Europe/New Zealand/Australia/North America vs ~2 per 1,000 in Japan/Southeast Asia (senat2024gestationaltrophoblasticdisease pages 4-7). - A 2023 guideline notes over-representation of Black US-American women in registries and about double incidence in Asian vs Caucasian women (tempfer2023gestationalandnongestational pages 4-5).

Lifestyle/nutrition and reproductive history - Smoking and dietary carotene deficiency are listed as risk factors in a 2024 GTD review (senat2024gestationaltrophoblasticdisease pages 4-7). - A 2024 registry-based review excerpt cites associations with cigarette smoking (~2× risk), vitamin A deficiency (1.6×, p=0.05), recurrent abortions (OR 2.8), and infertility history (OR 3.7) (munyakarama2024gestationaltrophoblasticdisease pages 22-26).

2.3 Protective factors

Parity may be protective in some analyses (parity ≥1 OR 0.6) (munyakarama2024gestationaltrophoblasticdisease pages 22-26). Robust protective factors were not a focus of the 2023 guideline excerpts or the 2024 GTD pathology review (tempfer2023gestationalandnongestational pages 4-5, senat2024gestationaltrophoblasticdisease pages 4-7).

2.4 Gene–environment interactions

Not explicitly characterized in the retrieved excerpts.

3. Phenotypes (clinical presentation) + HPO suggestions

3.1 Common clinical phenotypes

A 2024 review describes the classic molar-pregnancy/GTD phenotype and common findings: - Vaginal bleeding (most common), sometimes passage of swollen villi (senat2024gestationaltrophoblasticdisease pages 4-7). - Uterine enlargement for gestational age, theca lutein cysts, severe nausea/vomiting (hyperemesis), early pregnancy hypertension, and disproportionately high hCG for gestational age (senat2024gestationaltrophoblasticdisease pages 4-7). - Theca lutein cyst frequency was reported as ~9–25% in a review table (senat2024gestationaltrophoblasticdisease pages 4-7).

GTN may be asymptomatic and detected via post-evacuation hCG surveillance, or present with irregular vaginal bleeding and metastatic symptoms depending on site (senat2024gestationaltrophoblasticdisease pages 4-7, li2023gestationaltrophoblasticneoplasia pages 4-6).

3.2 Metastatic patterns and severe presentations

  • Invasive mole can metastasize “most commonly to the lungs and vagina” (senat2024gestationaltrophoblasticdisease pages 4-7).
  • Rare mother–infant metastatic presentations (systematic review of 22 cases) show extreme metastatic burden; in infants: liver 77.35%, lung 72.7%, brain/GI 18.2% (mangla2023gestationaltrophoblasticneoplasia pages 2-4).

3.3 Laboratory abnormalities

  • Serum β-hCG elevation is the key laboratory marker and is used for diagnosis and response monitoring (senat2024gestationaltrophoblasticdisease pages 7-11, jinkai2024prognosticatinggestationaltrophoblastic pages 1-2).

3.4 HPO term suggestions (not exhaustive)

  • Vaginal bleeding: HP:0000132
  • Hyperemesis gravidarum / severe vomiting: HP:0100665 (or vomiting HP:0002013)
  • Uterine enlargement: HP:0000134
  • Ovarian cysts (theca lutein cysts): HP:0000139
  • Elevated circulating chorionic gonadotropin: (closest HPO variants include abnormal laboratory test terms; may require mapping via LOINC rather than HPO)
  • Pulmonary metastases / lung nodules: HP:0031351 (pulmonary nodule) / metastatic neoplasm (broad)

Quality-of-life impacts were not quantified in the retrieved excerpts.

4. Genetic / molecular information

4.1 Germline predisposition (molar pregnancy context)

A 2024 excerpt lists genetic predisposition genes associated with hydatidiform mole/recurrent mole syndromes, including NLRP7 and KHDC3L, and mentions additional genes (MEI1, TOP6BL, REC114) (munyakarama2024gestationaltrophoblasticdisease pages 22-26). These are primarily relevant to recurrent molar pregnancy risk, which in turn increases GTN risk (munyakarama2024gestationaltrophoblasticdisease pages 22-26).

4.2 Somatic/molecular alterations in trophoblastic tumors (ETT/precursor lesions)

A 2023 Modern Pathology molecular study distinguished placental site nodule (PSN), atypical PSN (APSN), and ETT using IHC, NanoString transcriptomics, and RNA-seq fusion testing: - Ki-67 proliferation index increased from PSN (~4.8%) to APSN (~11.7%) to ETT (~20%), with ETT significantly higher (p<0.001) (jeremie2023molecularanalysesof pages 4-5). - Prior work cited in this study notes LPCAT1–TERT fusion transcripts and TERT amplification as characteristic of ETT and absent from PSN/PSTT; in this cohort, no APSN harbored LPCAT1–TERT (jeremie2023molecularanalysesof pages 1-3, jeremie2023molecularanalysesof pages 5-6). - Gene-set enrichments in ETT vs APSN included DNA damage repair, immortality/stemness, and cell-cycle signaling (jeremie2023molecularanalysesof pages 1-3, jeremie2023molecularanalysesof pages 4-5).

4.3 Immune biomarkers

Expression of PD-1/PD-L1 axis is central to immunotherapy rationale. A 2024 immunotherapy review notes the rationale includes “strong PD-L1 expression by malignant trophoblast” (baas2024immunotherapyforgestational pages 2-3).

5. Mechanism / pathophysiology (causal chain) + GO/CL suggestions

5.1 Causal chain (high-level)

1) Abnormal conception (often molar pregnancy) → 2) persistent trophoblast proliferation and/or malignant transformation → 3) elevated/plateauing/rising hCG after pregnancy evacuation → 4) local invasion and/or hematogenous metastasis (e.g., lung, vagina; sometimes brain/liver in severe cases) → 5) clinical manifestations (bleeding, metastatic symptoms) (senat2024gestationaltrophoblasticdisease pages 4-7, senat2024gestationaltrophoblasticdisease pages 7-11).

5.2 Suggested GO biological process terms (examples)

  • GO:0008283 cell population proliferation
  • GO:0048870 cell motility
  • GO:0001525 angiogenesis
  • GO:0048514 blood vessel morphogenesis
  • GO:0006955 immune response (for immune microenvironment and checkpoint biology)

5.3 Suggested CL (Cell Ontology) terms (examples)

  • Trophoblast cell: CL:0000351 (trophoblast cell; broad)
  • Syncytiotrophoblast / cytotrophoblast (if needed for subtype mapping)

5.4 Suggested UBERON anatomical terms

  • Uterus: UBERON:0000995
  • Placenta: UBERON:0001987
  • Lung: UBERON:0002048 (metastatic site)
  • Vagina: UBERON:0000996 (metastatic site)

6. Inheritance and population

GTN itself is not classically inherited; however, recurrent molar pregnancy (a major upstream risk state) can have maternal-effect genetic causes (e.g., NLRP7, KHDC3L) (munyakarama2024gestationaltrophoblasticdisease pages 22-26). Population differences include significant geographic variability in incidence and differences by ethnicity as described above (senat2024gestationaltrophoblasticdisease pages 4-7, tempfer2023gestationalandnongestational pages 4-5).

7. Diagnostics

7.1 Diagnostic criteria (post-molar hCG criteria)

A contemporary review lists FIGO (2000) hCG criteria for diagnosing GTN after molar evacuation: - Plateau: hCG stable (±10%) in 4 determinations over 3 weeks (senat2024gestationaltrophoblasticdisease pages 4-7). - Rise: hCG increase >10% in 3 determinations over 2 weeks (senat2024gestationaltrophoblasticdisease pages 4-7, senat2024gestationaltrophoblasticdisease pages 7-11). - Persistence: detectable hCG >6 months after evacuation (senat2024gestationaltrophoblasticdisease pages 4-7, tempfer2023gestationalandnongestational pages 6-7).

7.2 Staging and risk stratification

GTN staging integrates FIGO anatomical stage (I–IV) and WHO/FIGO prognostic score (low risk ≤6; high risk ≥7; ultra-high-risk ≥13 in later updates) (senat2024gestationaltrophoblasticdisease pages 7-11, jinkai2024prognosticatinggestationaltrophoblastic pages 1-2). The FIGO/WHO scoring system is noted to be not applicable to PSTT and ETT (jinkai2024prognosticatinggestationaltrophoblastic pages 1-2).

A compact reference table is provided below.

Item Details Source (PMID/DOI/URL if available) Year
GTN histologic subtypes Gestational trophoblastic neoplasia (GTN) comprises invasive mole, choriocarcinoma, placental site trophoblastic tumour (PSTT), and epithelioid trophoblastic tumour (ETT). (jinkai2024prognosticatinggestationaltrophoblastic pages 1-2, senat2024gestationaltrophoblasticdisease pages 1-4) Lin J-K, Jiang F, Xiang Y. eClinicalMedicine 77:102890. DOI: 10.1016/j.eclinm.2024.102890; https://doi.org/10.1016/j.eclinm.2024.102890. Senat H et al. DOI: 10.12775/jehs.2024.59.005; https://doi.org/10.12775/jehs.2024.59.005 2024
Post-molar diagnostic hCG criterion: plateau Post-molar GTN can be diagnosed when hCG remains within ±10% across 4 determinations over 3 weeks after evacuation. (senat2024gestationaltrophoblasticdisease pages 4-7) Senat H et al. DOI: 10.12775/jehs.2024.59.005; https://doi.org/10.12775/jehs.2024.59.005 2024
Post-molar diagnostic hCG criterion: rise Post-molar GTN can be diagnosed when hCG rises by >10% in 3 determinations over 2 weeks. (senat2024gestationaltrophoblasticdisease pages 4-7, senat2024gestationaltrophoblasticdisease pages 7-11) Senat H et al. DOI: 10.12775/jehs.2024.59.005; https://doi.org/10.12775/jehs.2024.59.005 2024
Post-molar diagnostic hCG criterion: persistent detectability Post-molar GTN can be diagnosed when hCG remains detectable for >6 months after molar evacuation. (senat2024gestationaltrophoblasticdisease pages 4-7, tempfer2023gestationalandnongestational pages 6-7) Senat H et al. DOI: 10.12775/jehs.2024.59.005; https://doi.org/10.12775/jehs.2024.59.005. Tempfer C et al. DOI: 10.1055/a-1904-6461; https://doi.org/10.1055/a-1904-6461 2024, 2023
Additional GTN diagnostic basis GTN diagnosis may also be established by presence of metastases or histologic diagnosis (e.g., invasive mole, choriocarcinoma, PSTT, ETT). (senat2024gestationaltrophoblasticdisease pages 7-11, senat2024gestationaltrophoblasticdisease pages 4-7) Senat H et al. DOI: 10.12775/jehs.2024.59.005; https://doi.org/10.12775/jehs.2024.59.005 2024
FIGO anatomical stage I Stage I: disease confined to the uterus. (senat2024gestationaltrophoblasticdisease pages 7-11) Senat H et al. DOI: 10.12775/jehs.2024.59.005; https://doi.org/10.12775/jehs.2024.59.005 2024
FIGO anatomical stage II Stage II: GTN extends outside the uterus but is limited to genital structures. (senat2024gestationaltrophoblasticdisease pages 7-11) Senat H et al. DOI: 10.12775/jehs.2024.59.005; https://doi.org/10.12775/jehs.2024.59.005 2024
FIGO anatomical stage III Stage III: GTN extends to the lungs, with or without genital tract involvement. (senat2024gestationaltrophoblasticdisease pages 7-11) Senat H et al. DOI: 10.12775/jehs.2024.59.005; https://doi.org/10.12775/jehs.2024.59.005 2024
FIGO anatomical stage IV Stage IV: all other distant metastases. (senat2024gestationaltrophoblasticdisease pages 7-11) Senat H et al. DOI: 10.12775/jehs.2024.59.005; https://doi.org/10.12775/jehs.2024.59.005 2024
WHO/FIGO prognostic score: low risk Score 0–6 = low-risk GTN; typically treated with single-agent chemotherapy. (jinkai2024prognosticatinggestationaltrophoblastic pages 1-2, senat2024gestationaltrophoblasticdisease pages 7-11) Lin J-K, Jiang F, Xiang Y. DOI: 10.1016/j.eclinm.2024.102890; https://doi.org/10.1016/j.eclinm.2024.102890. Senat H et al. DOI: 10.12775/jehs.2024.59.005; https://doi.org/10.12775/jehs.2024.59.005 2024
WHO/FIGO prognostic score: high risk Score ≥7 = high-risk GTN; typically requires multi-agent chemotherapy. (jinkai2024prognosticatinggestationaltrophoblastic pages 1-2, senat2024gestationaltrophoblasticdisease pages 7-11) Lin J-K, Jiang F, Xiang Y. DOI: 10.1016/j.eclinm.2024.102890; https://doi.org/10.1016/j.eclinm.2024.102890. Senat H et al. DOI: 10.12775/jehs.2024.59.005; https://doi.org/10.12775/jehs.2024.59.005 2024
WHO/FIGO prognostic score: ultra-high risk Ultra-high-risk category recognized in later FIGO updates as score ≥13 or extensive metastasis. (jinkai2024prognosticatinggestationaltrophoblastic pages 1-2) Lin J-K, Jiang F, Xiang Y. eClinicalMedicine 77:102890. DOI: 10.1016/j.eclinm.2024.102890; https://doi.org/10.1016/j.eclinm.2024.102890 2024
WHO/FIGO score applicability caveat The standard FIGO/WHO prognostic scoring system is not applicable to PSTT and ETT. (jinkai2024prognosticatinggestationaltrophoblastic pages 1-2) Lin J-K, Jiang F, Xiang Y. eClinicalMedicine 77:102890. DOI: 10.1016/j.eclinm.2024.102890; https://doi.org/10.1016/j.eclinm.2024.102890 2024
Core prognostic score variables FIGO/WHO scoring incorporates factors such as antecedent pregnancy, interval since index pregnancy, pretreatment hCG, tumour size, site/number of metastases, and prior failed chemotherapy. (jinkai2024prognosticatinggestationaltrophoblastic pages 1-2, tempfer2023gestationalandnongestational pages 4-5) Lin J-K, Jiang F, Xiang Y. DOI: 10.1016/j.eclinm.2024.102890; https://doi.org/10.1016/j.eclinm.2024.102890. Tempfer C et al. DOI: 10.1055/a-1904-6461; https://doi.org/10.1055/a-1904-6461 2024, 2023

Table: This table summarizes the core clinical classification framework for gestational trophoblastic neoplasia, including diagnostic hCG criteria, FIGO staging, and WHO/FIGO prognostic score cutoffs. It is useful as a compact reference for disease definition, diagnosis, and risk stratification.

7.3 Imaging

  • For re-staging or suspected resistance/metastasis, a 2023 guideline excerpt recommends transvaginal ultrasound, CT thorax/abdomen, and brain MRI, with FDG-PET/CT considered when imaging is suspicious for metastasis (tempfer2023gestationalandnongestational pages 6-7).

7.4 Pathology and molecular diagnostics

  • STR genotyping is described as the “gold standard” for correct diagnosis in GTD/GTN contexts (senat2024gestationaltrophoblasticdisease pages 1-4, senat2024gestationaltrophoblasticdisease pages 4-7).
  • For chorionic-type intermediate trophoblastic lesions, RNAseq signatures and fusion testing (e.g., LPCAT1–TERT in ETT) can aid triage and classification (jeremie2023molecularanalysesof pages 1-3, jeremie2023molecularanalysesof pages 5-6).

7.5 Abstract-quote support (diagnosis/definition)

  • Diagnostic concept quote: “Post-molar gestational trophoblast neoplasia (GTN) is a clinical diagnosis based on the observation of a persistent increase or persistently high hCG concentration after evacuation of the mole…” (senat2024gestationaltrophoblasticdisease pages 1-4).

8. Treatment (current practice + recent developments)

8.1 Standard of care (chemotherapy and surgery)

Low-risk GTN (FIGO score <7): - The 2023 DGGG/OEGGG/SGGG guideline recommends methotrexate (MTX) regimen (e.g., 50 mg IM on days 1,3,5,7 with folic acid on alternating days) as first-line for invasive mole/low-risk GTN, with consolidation cycles after hCG becomes undetectable (tempfer2023gestationalandnongestational pages 7-8, tempfer2023gestationalandnongestational pages 6-7). - MTX resistance is operationalized as plateaued or rising hCG across serial tests (e.g., “four or more consecutive hCG tests showing plateauing” or rising) with escalation to actinomycin-D or multi-agent therapy (tempfer2023gestationalandnongestational pages 6-7, eichbaum142023clemenstempfer1larschristian pages 6-7).

High-risk GTN (FIGO score ≥7): - First-line recommended regimen is EMA-CO; if hCG plateaus/increases, switch to salvage multi-agent regimens (e.g., EMA-EP, BEP, TP-TE, carboplatin/paclitaxel) (tempfer2023gestationalandnongestational pages 7-8, tempfer2023gestationalandnongestational pages 6-7). - For very high risk (WHO score >12), induction with etoposide + cisplatin for 1–3 cycles is recommended to reduce early hemorrhage-related mortality (tempfer2023gestationalandnongestational pages 7-8, tempfer2023gestationalandnongestational pages 9-10).

PSTT/ETT: - Surgery (simple hysterectomy) is emphasized as preferred/therapy of choice; chemotherapy is suggested if metastases are present (tempfer2023gestationalandnongestational pages 18-19, tempfer2023gestationalandnongestational pages 9-10).

8.2 Immunotherapy (major 2023–2024 development; real-world implementation)

Checkpoint inhibitors are increasingly used for chemoresistant/refractory GTN.

Aggregated 2024 review (133 patients): A 2024 review identified 133 patients treated with checkpoint inhibitors (pembrolizumab 23; avelumab 22; camrelizumab 57; toripalimab 15; other anti–PD-1 16). Complete remission occurred in 85 patients overall, including 77/118 in high-risk/relapsed/multidrug-resistant and 8/15 in low-risk cases (baas2024immunotherapyforgestational pages 1-2). (Expert analysis: this aggregation suggests meaningful cure potential in otherwise refractory disease, but it is dominated by non-randomized evidence.)

Avelumab (TROPHIMMUN cohort A; NCT03135769): - Phase II trial in single-agent chemotherapy-resistant disease reported 8/15 (53.3%) hCG normalization; no relapses; mostly grade 1–2 toxicities (braga2023immunotherapyinthe pages 4-5). - Abstract quote: “Eight patients (53.3%) had hCG normalization… none subsequently relapsed.” (braga2023immunotherapyinthe pages 4-5).

Dual checkpoint blockade (DART SWOG S1609 cohort; NCT02834013): - Prospective phase II basket cohort in refractory GTN (ipilimumab + nivolumab) observed ORR 75% (3/4) with CR 25%; 6-month PFS 75%; two grade 3 immune-related AEs (arthralgia, colitis) (patel2024aphaseii pages 1-3). - Abstract quote: “3 of 4 patients responded [ORR = 75%…]” (patel2024aphaseii pages 1-3).

Camrelizumab + apatinib (phase II; n=20 referenced in review): - Objective response 11/20 (55%) with 10 CR; grade 3 toxicities common (e.g., hypertension) (baas2024immunotherapyforgestational pages 4-5).

8.3 MAXO suggestions (examples)

  • Chemotherapy: MAXO:0000058 (chemotherapy)
  • Methotrexate therapy: MAXO:0000648 (antimetabolite chemotherapy; if available)
  • Actinomycin D therapy: MAXO chemotherapy subtype
  • Hysterectomy: MAXO:0001112 (hysterectomy)
  • Immune checkpoint inhibitor therapy: MAXO:0000942 (immunotherapy; checkpoint blockade)

9. Prevention

Primary prevention is limited because causation is tightly linked to conception biology; however, secondary prevention via surveillance is central.

Post-molar surveillance: - Weekly hCG monitoring after partial mole until negative on at least two consecutive tests is recommended; persistent disease suggested by rising hCG or hCG persisting >6 months (tempfer2023gestationalandnongestational pages 6-7). - After completion of chemotherapy and hCG negativization, monthly hCG monitoring for 1 year is recommended (tempfer2023gestationalandnongestational pages 7-8, tempfer2023gestationalandnongestational pages 18-19).

10. Outcome / prognosis

  • A recent review states cure rates “exceed 90%” overall (senat2024gestationaltrophoblasticdisease pages 7-11).
  • A systematic review on mother–infant metastatic GTN notes historical survival rates “85%–95%” (while also noting lower survival in that extreme subset) (mangla2023gestationaltrophoblasticneoplasia pages 9-10).

11. Applications and real-world implementations

11.1 Centralized rare-tumor care and guideline-driven management

A 2023 European guideline (DGGG/OEGGG/SGGG) provides structured diagnostic and treatment pathways including standardized hCG monitoring, risk scoring, and escalation algorithms, reflecting real-world implementation in specialty care networks (tempfer2023gestationalandnongestational pages 7-8, tempfer2023gestationalandnongestational pages 6-7).

11.2 Immunotherapy in practice

By 2024, checkpoint inhibitor use has expanded from case reports to prospective trials and pooled clinical experience across multiple agents, supporting increasing adoption for chemoresistant GTN and chemotherapy-resistant PSTT/ETT contexts (baas2024immunotherapyforgestational pages 1-2, baas2024immunotherapyforgestational pages 4-5).

12. Other species / natural disease

No evidence on naturally occurring GTN in non-human species was identified in the retrieved sources (limitation).

13. Model organisms

No specific animal models or engineered model organism systems for GTN were described in the retrieved sources (limitation). The molecular profiling work described was performed on human FFPE specimens with transcriptomic/fusion analyses (jeremie2023molecularanalysesof pages 1-3).

14. Expert opinions and analysis (authoritative sources)

  • The 2024 immunotherapy review concludes checkpoint inhibitors represent “a new paradigm” and highlights priorities for future research including earlier-line use, chemo combinations, and fertility impact (baas2024immunotherapyforgestational pages 1-2).
  • The 2023 German/Austrian/Swiss guideline emphasizes guideline-driven staging and treatment escalation and explicitly includes immunotherapy and molecular diagnostics chapters (tempfer2023gestationalandnongestational pages 4-5, tempfer2023gestationalandnongestational pages 9-10).

Key recent references (URLs + publication dates)

  • Tempfer C et al. Mar 2023. Geburtshilfe und Frauenheilkunde (DGGG/OEGGG/SGGG guideline). https://doi.org/10.1055/a-1904-6461 (tempfer2023gestationalandnongestational pages 4-5)
  • Senat H et al. Feb 2024. GTD diagnostic/pathology review. https://doi.org/10.12775/jehs.2024.59.005 (senat2024gestationaltrophoblasticdisease pages 1-4)
  • Baas IO et al. Sep 2024. Immunotherapy review (133 patients aggregated). https://doi.org/10.1159/000533972 (baas2024immunotherapyforgestational pages 1-2)
  • Patel SP et al. Oct 2024. DART SWOG S1609 GTN cohort (ipi+nivo). https://doi.org/10.1158/1078-0432.CCR-23-2293 (patel2024aphaseii pages 1-3)

Notes on limitations of this run

  • MONDO/Orphanet and MeSH identifiers were not present in the retrieved excerpts, so they could not be cited directly.
  • Model organism and comparative pathology information was not identified in the retrieved corpus.

References

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  24. (tempfer2023gestationalandnongestational pages 18-19): Clemens Tempfer, Lars-Christian Horn, Sven Ackermann, Ralf Dittrich, Jens Einenkel, Andreas Günthert, Heidemarie Haase, Jürgen Kratzsch, Michael Kreißl, Stephan Polterauer, Andreas Ebert, Eric Steiner, Falk Thiel, Michael Eichbaum, Tanja Fehm, Martin C. Koch, and Paul Gass. Gestational and non-gestational trophoblastic neoplasia. guideline of the dggg, oeggg and sggg (s2k-level, awmf registry no. 032/049, april 2022). Geburtshilfe und Frauenheilkunde, 83:267-288, Mar 2023. URL: https://doi.org/10.1055/a-1904-6461, doi:10.1055/a-1904-6461. This article has 2 citations and is from a peer-reviewed journal.

  25. (mangla2023gestationaltrophoblasticneoplasia pages 9-10): Mishu Mangla, Emine A. Rahiman, Harpreet Kaur, and Poojitha Kanikaram. Gestational trophoblastic neoplasia with concurrent metastasis to the mother and child: a systematic literature review. Journal of the Turkish German Gynecological Association, 24:206-219, Sep 2023. URL: https://doi.org/10.4274/jtgga.galenos.2023.2023-5-2, doi:10.4274/jtgga.galenos.2023.2023-5-2. This article has 12 citations.

Artifacts