Papillary thyroid carcinoma is the most common differentiated thyroid cancer arising from thyroid follicular cells. It comprises the majority of thyroid malignancies and includes classical, follicular-patterned, and more aggressive variants such as tall cell carcinoma. Papillary thyroid carcinoma is typically driven by MAPK-pathway activating alterations including BRAF V600E, RET/PTC rearrangements, and RAS-family mutations, while additional events such as TERT promoter mutation and aberrant PI3K-PTEN-AKT signaling are associated with aggressive progression and radioactive iodine-refractory disease. Most cases have excellent disease-specific survival, but regional nodal metastasis and recurrence remain clinically important.
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name: Papillary Thyroid Carcinoma
creation_date: '2026-04-12T05:10:03Z'
description: >-
Papillary thyroid carcinoma is the most common differentiated thyroid cancer
arising from thyroid follicular cells. It comprises the majority of thyroid
malignancies and includes classical, follicular-patterned, and more aggressive
variants such as tall cell carcinoma. Papillary thyroid carcinoma is typically
driven by MAPK-pathway activating alterations including BRAF V600E, RET/PTC
rearrangements, and RAS-family mutations, while additional events such as TERT
promoter mutation and aberrant PI3K-PTEN-AKT signaling are associated with
aggressive progression and radioactive iodine-refractory disease. Most cases
have excellent disease-specific survival, but regional nodal metastasis and
recurrence remain clinically important.
categories:
- Endocrine Cancer
- Differentiated Thyroid Cancer
parents:
- thyroid carcinoma
has_subtypes:
- name: Classical Papillary Thyroid Carcinoma
description: >-
Conventional papillary thyroid carcinoma with papillary architecture and the
characteristic nuclear features used for diagnosis.
- name: Follicular Variant Papillary Thyroid Carcinoma
description: >-
Papillary thyroid carcinoma with predominantly follicular architecture and
papillary-type nuclear features. Often aligns with a more RAS-like molecular
profile than classical PTC.
- name: Tall Cell Variant Papillary Thyroid Carcinoma
description: >-
Aggressive histologic variant enriched for BRAF V600E, extrathyroidal
extension, and recurrence risk.
pathophysiology:
- name: Driver Alterations in Thyroid Follicular Cells
description: >-
Early oncogenic alterations in papillary thyroid carcinoma commonly include
BRAF V600E, RET/PTC rearrangements, and RAS-family mutations. These driver
events arise in thyroid follicular cells and establish the genotype-phenotype
patterns that distinguish conventional papillary tumors from more
follicular-patterned neoplasms.
cell_types:
- preferred_term: thyroid follicular cell
term:
id: CL:0002258
label: thyroid follicular cell
locations:
- preferred_term: thyroid gland
term:
id: UBERON:0002046
label: thyroid gland
evidence:
- reference: PMID:39502057
reference_title: "[Correlations of Ultrasound Features With Gene Mutations and Pathologic Subtypes in Papillary Thyroid Carcinoma]."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "The common gene mutations in PTC include BRAF V600E,RET/PTC rearrangement,and RAS mutations."
explanation: Supports the major early driver classes emphasized in papillary thyroid carcinoma.
- reference: PMID:41175860
reference_title: "Somatic genetic alterations in the development and progression in thyroid tumors of follicular cells."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "In most tumors of follicular cell origin, the primary molecular events are RAS or RAS-like (follicular-patterned tumors) and BRAF p.V600E or BRAF V600E-like (conventional papillary carcinomas) alterations."
explanation: Anchors the characterization of these driver events as the primary (early) molecular alterations in follicular-cell-derived thyroid tumors.
downstream:
- target: MAPK Pathway Hyperactivation
description: Driver mutations and fusions converge on persistent mitogenic signaling
- name: MAPK Pathway Hyperactivation
description: >-
Driver alterations converge on chronic MAPK signaling, which promotes thyroid
follicular cell proliferation and malignant transformation. BRAF-like tumors
especially depend on this pathway and often show loss of thyroid
differentiation programs relevant to iodine handling.
biological_processes:
- preferred_term: MAPK cascade
modifier: INCREASED
term:
id: GO:0000165
label: MAPK cascade
evidence:
- reference: PMID:41175860
reference_title: "Somatic genetic alterations in the development and progression in thyroid tumors of follicular cells."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "In most tumors of follicular cell origin, the primary molecular events are RAS or RAS-like (follicular-patterned tumors) and BRAF p.V600E or BRAF V600E-like (conventional papillary carcinomas) alterations."
explanation: Supports the dominant BRAF-like and RAS-like molecular programs that organize papillary thyroid carcinoma biology.
- reference: PMID:41368991
reference_title: "BRAF V600E in thyroid cancer: navigating prognostic uncertainty and therapeutic opportunity."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "BRAF V600E, the most common oncogenic driver in papillary thyroid carcinoma, activates the MAPK pathway and suppresses genes involved in iodine metabolism and differentiation."
explanation: Supports the role of BRAF-driven MAPK activation and reduced differentiation in a major papillary thyroid carcinoma subset.
downstream:
- target: Aggressive Progression and Reduced Differentiation
description: Additional oncogenic hits superimposed on driver signaling promote dedifferentiation and treatment resistance
- name: Aggressive Progression and Reduced Differentiation
description: >-
A subset of papillary thyroid carcinomas acquires additional alterations such
as TERT promoter mutation, TP53 disruption, and aberrant PI3K-PTEN-AKT
signaling. These changes are associated with progression toward more
aggressive, less-differentiated, and radioiodine-refractory disease.
biological_processes:
- preferred_term: phosphatidylinositol 3-kinase/protein kinase B signal transduction
modifier: INCREASED
term:
id: GO:0043491
label: phosphatidylinositol 3-kinase/protein kinase B signal transduction
- preferred_term: cell differentiation
modifier: DECREASED
term:
id: GO:0030154
label: cell differentiation
evidence:
- reference: PMID:41175860
reference_title: "Somatic genetic alterations in the development and progression in thyroid tumors of follicular cells."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "Progression of thyroid tumors to advanced and less-differentiated carcinomas requires additional oncogenic alterations, including TP53 and TERT promoter mutation, and aberrant PI3K-PTEN-AKT signaling."
explanation: Supports the progression model linking additional alterations to aggressive and less-differentiated thyroid carcinoma states.
histopathology:
- name: Papillary Thyroid Carcinoma
finding_term:
preferred_term: Thyroid Gland Papillary Carcinoma
term:
id: NCIT:C4035
label: Thyroid Gland Papillary Carcinoma
frequency: VERY_FREQUENT
description: >-
Papillary thyroid carcinoma is the dominant malignant thyroid histology and
includes classical, follicular variant, tall cell, and other less common
morphologic forms.
evidence:
- reference: PMID:21221869
reference_title: "Papillary thyroid carcinoma variants."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "Papillary thyroid carcinomas are the most common thyroid cancers and constitute more than 70% of thyroid malignancies."
explanation: Supports papillary thyroid carcinoma as the predominant malignant thyroid histology.
- name: Papillary-Type Nuclear Features
frequency: VERY_FREQUENT
diagnostic: true
description: >-
The hallmark diagnostic nuclear features of papillary thyroid carcinoma include
nuclear enlargement with optically clear (ground-glass) chromatin ("Orphan-Annie
eye" nuclei), longitudinal nuclear grooves, and intranuclear cytoplasmic
pseudoinclusions. These papillary-type nuclear changes are required criteria for
histological and cytological diagnosis, distinguishing PTC from benign follicular
lesions. Their frequency correlates with BRAF V600E mutation in classical and
tall-cell subtypes.
evidence:
- reference: PMID:26271724
reference_title: "BRAF V600E and risk stratification of thyroid microcarcinoma: a multicenter pathological and clinical study."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "nuclear grooves, optically clear nuclei, tall cells within the tumor"
explanation: Multicenter pathological analysis of papillary thyroid microcarcinomas identifies nuclear grooves and optically clear nuclei as characteristic microscopic features correlated with BRAF V600E.
- name: Psammoma Bodies
finding_term:
preferred_term: psammoma body formation
term:
id: NCIT:C27709
label: Psammoma Body Formation
description: >-
Psammoma bodies are concentrically laminated calcified structures that form
by dystrophic calcification of infarcted papillae or necrotic neoplastic cells.
They are a diagnostically useful but non-universal finding in papillary thyroid
carcinoma. Although their sensitivity is low (they are absent in a substantial
minority of PTCs), their presence is highly specific for malignancy and for PTC
in particular, especially when encountered in cervical lymph node tissue.
Identification of psammoma bodies alone in a cervical lymph node is considered
evidence of metastatic PTC even when viable tumor cells are absent.
notes: >-
Psammoma bodies are sufficiently specific for PTC that their incidental
finding in cervical lymph nodes warrants a diligent search for a primary
papillary thyroid carcinoma. They are absent or sparse in follicular and
anaplastic thyroid carcinoma.
evidence:
- reference: PMID:37181946
reference_title: "The Accurate Interpretation and Clinical Significance of Morphological Features of Fine Needle Aspiration Cells in Papillary Thyroid Carcinoma."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "Although the sensitivity of psammoma bodies (PBs) was low, the specificity was 100%."
explanation: Retrospective study of 337 PTC patients confirms psammoma bodies as perfectly specific for PTC on FNA cytology despite lower sensitivity, supporting their role as a high-value diagnostically specific feature.
phenotypes:
- category: Endocrine
name: Thyroid Nodule
diagnostic: true
description: >-
Most patients present with a thyroid nodule detected clinically or on
imaging.
phenotype_term:
preferred_term: Thyroid nodule
term:
id: HP:0025388
label: Thyroid nodule
evidence:
- reference: PMID:24276450
reference_title: "The accuracy of thyroid nodule ultrasound to predict thyroid cancer: systematic review and meta-analysis."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "The most common type of cancer was papillary thyroid cancer (84%)."
explanation: In a meta-analysis of 18,288 thyroid nodules, papillary thyroid carcinoma was the predominant malignancy identified, consistent with the thyroid nodule being the characteristic presentation of papillary thyroid carcinoma.
- category: Systemic
name: Cervical Lymphadenopathy
description: >-
Regional cervical lymph node involvement is common and may be present at
diagnosis, particularly in younger patients and in tumors with higher-risk
molecular or histologic features.
phenotype_term:
preferred_term: Lymphadenopathy
term:
id: HP:0002716
label: Lymphadenopathy
evidence:
- reference: PMID:29329789
reference_title: "Lateral lymph node metastasis in papillary thyroid carcinoma: A systematic review and meta-analysis for prevalence, risk factors, and location."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "Lymph node metastasis (LNM) is frequent in papillary thyroid carcinoma (PTC) and is associated with a poor prognosis."
explanation: Systematic review and meta-analysis supports regional lymph node metastasis as a frequent feature of papillary thyroid carcinoma.
biochemical:
- name: Thyroglobulin
notes: >-
Thyroglobulin remains a practical diagnostic and surveillance biomarker in
differentiated thyroid cancer. Immunohistochemical staining is especially
helpful in confirming papillary thyroid carcinoma at metastatic sites, and
serum thyroglobulin is widely used for postoperative monitoring of disease
recurrence after thyroidectomy.
evidence:
- reference: PMID:21221869
reference_title: "Papillary thyroid carcinoma variants."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "Immunohistochemical staining with TTF-1 and thyroglobulin is very useful in confirming the diagnosis of papillary thyroid carcinoma especially in metastatic sites."
explanation: Supports the diagnostic utility of thyroglobulin immunostaining in papillary thyroid carcinoma at metastatic sites.
- reference: PMID:26462967
reference_title: "2015 American Thyroid Association Management Guidelines for Adult Patients with Thyroid Nodules and Differentiated Thyroid Cancer: The American Thyroid Association Guidelines Task Force on Thyroid Nodules and Differentiated Thyroid Cancer."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "surveillance for recurrent disease using imaging and serum thyroglobulin"
explanation: ATA guidelines confirm serum thyroglobulin as a standard postoperative surveillance marker for differentiated thyroid cancer including PTC.
- name: Molecular Driver Testing
notes: >-
Molecular testing for BRAF V600E, RET/PTC rearrangements, and RAS-family
mutations can refine prognostic assessment, clarify subtype biology, and
guide targeted therapy discussions in advanced disease.
evidence:
- reference: PMID:39502057
reference_title: "[Correlations of Ultrasound Features With Gene Mutations and Pathologic Subtypes in Papillary Thyroid Carcinoma]."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "The prognosis of papillary thyroid carcinoma (PTC) is highly dependent on gene mutations and pathologic features."
explanation: Supports routine clinical relevance of molecular and pathologic stratification in papillary thyroid carcinoma.
genetic:
- name: BRAF
gene_term:
preferred_term: BRAF
term:
id: hgnc:1097
label: BRAF
association: Somatic Activating Mutations
notes: >-
BRAF V600E is the most common single driver alteration in conventional
papillary thyroid carcinoma. It activates MAPK signaling and is associated
with higher risk of nodal metastasis and recurrence in aggregate analyses.
However, a large meta-analysis of 20,570 patients found no significant
association with distant metastases (OR=0.75) or disease-specific mortality
(OR=0.97), limiting its role as an independent prognostic marker for survival.
evidence:
- reference: PMID:41368991
reference_title: "BRAF V600E in thyroid cancer: navigating prognostic uncertainty and therapeutic opportunity."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "BRAF V600E, the most common oncogenic driver in papillary thyroid carcinoma, activates the MAPK pathway and suppresses genes involved in iodine metabolism and differentiation."
explanation: Supports BRAF V600E as the dominant papillary thyroid carcinoma driver and a mechanism for MAPK activation.
- reference: PMID:41419184
reference_title: "Prognostic Value of BRAF V600E Mutation in Papillary Thyroid Carcinoma: A Meta-Analysis of Nodal Involvement, Distant Metastases, Recurrence, and Mortality."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "Overall, these findings confirm that BRAF V600E mutation is associated with an increased risk of nodal metastasis and recurrence in papillary thyroid carcinoma."
explanation: Supports the clinical association between BRAF V600E and adverse recurrence-related features.
- reference: PMID:41419184
reference_title: "Prognostic Value of BRAF V600E Mutation in Papillary Thyroid Carcinoma: A Meta-Analysis of Nodal Involvement, Distant Metastases, Recurrence, and Mortality."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "However, its lack of impact on distant metastases and disease-specific mortality limits its role as an independent prognostic marker in clinical decision-making."
explanation: The same meta-analysis found no significant association with distant metastases or disease-specific mortality, qualifying BRAF V600E as an incomplete independent prognostic marker.
- name: RET
gene_term:
preferred_term: RET
term:
id: hgnc:9967
label: RET
association: Somatic Gene Fusions
notes: >-
RET/PTC rearrangements define an important papillary thyroid carcinoma subset,
especially in radiation-associated disease, and converge on the same
mitogenic pathways as other canonical drivers.
evidence:
- reference: PMID:39502057
reference_title: "[Correlations of Ultrasound Features With Gene Mutations and Pathologic Subtypes in Papillary Thyroid Carcinoma]."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "The common gene mutations in PTC include BRAF V600E,RET/PTC rearrangement,and RAS mutations."
explanation: Supports RET/PTC rearrangements as one of the major recurrent driver classes in papillary thyroid carcinoma.
- name: RAS family genes
association: Somatic Activating Mutations
notes: >-
RAS-family mutations are common in more follicular-patterned papillary thyroid
carcinoma and related differentiated thyroid neoplasms, reflecting a RAS-like
signaling program distinct from classical BRAF-like tumors.
evidence:
- reference: PMID:39502057
reference_title: "[Correlations of Ultrasound Features With Gene Mutations and Pathologic Subtypes in Papillary Thyroid Carcinoma]."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "The common gene mutations in PTC include BRAF V600E,RET/PTC rearrangement,and RAS mutations."
explanation: Supports RAS-family alterations as recurrent papillary thyroid carcinoma drivers.
- reference: PMID:41175860
reference_title: "Somatic genetic alterations in the development and progression in thyroid tumors of follicular cells."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "In most tumors of follicular cell origin, the primary molecular events are RAS or RAS-like (follicular-patterned tumors) and BRAF p.V600E or BRAF V600E-like (conventional papillary carcinomas) alterations."
explanation: Supports the distinction between RAS-like follicular-patterned tumors and BRAF-like conventional papillary carcinomas.
- name: TERT
gene_term:
preferred_term: TERT
term:
id: hgnc:11730
label: TERT
association: Somatic Promoter Mutations
notes: >-
TERT promoter mutations are progression-associated events linked to aggressive,
less-differentiated, and radioiodine-refractory thyroid carcinoma states.
evidence:
- reference: PMID:41175860
reference_title: "Somatic genetic alterations in the development and progression in thyroid tumors of follicular cells."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "Progression of thyroid tumors to advanced and less-differentiated carcinomas requires additional oncogenic alterations, including TP53 and TERT promoter mutation, and aberrant PI3K-PTEN-AKT signaling."
explanation: Supports TERT promoter mutation as a late progression event in aggressive thyroid carcinoma biology.
environmental:
- name: Ionizing Radiation Exposure
exposure_term:
preferred_term: exposure to ionizing radiation
term:
id: ECTO:7000047
label: exposure to ionizing radiation
influences_mechanisms:
- target: Driver Alterations in Thyroid Follicular Cells
environmental_effect: TRIGGERS
causal_link_type: INDIRECT_KNOWN_INTERMEDIATES
description: >-
Radiation reaching the thyroid causes double-strand breaks whose
mis-joining produces the rearrangement-type drivers characteristic of
radiation-associated disease, so the exposure reaches this node through
a known repair-error step.
evidence:
- reference: PMID:21221869
reference_title: "Papillary thyroid carcinoma variants."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "The most common etiologic factor is radiation"
explanation: >-
Identifies radiation as the most common etiologic factor for this
cancer, the exposure that generates its driver alterations.
notes: >-
Ionizing radiation is the strongest established environmental risk factor for
papillary thyroid carcinoma, especially after childhood or adolescent exposure.
evidence:
- reference: PMID:21221869
reference_title: "Papillary thyroid carcinoma variants."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "The most common etiologic factor is radiation"
explanation: Supports radiation exposure as the leading established environmental risk factor for papillary thyroid carcinoma.
treatments:
- name: Thyroidectomy
description: >-
Surgical resection is the mainstay of treatment for localized papillary
thyroid carcinoma.
treatment_term:
preferred_term: Thyroidectomy
term:
id: NCIT:C51648
label: Thyroidectomy
- name: Radioiodine Therapy
description: >-
Radioactive iodine is used selectively after surgery for intermediate-risk,
high-risk, or metastatic differentiated thyroid cancer.
treatment_term:
preferred_term: Radioactive Iodine Therapy
term:
id: NCIT:C157968
label: Radioactive Iodine Therapy
- name: Mutation-Directed Targeted Therapy
description: >-
Advanced papillary thyroid carcinoma with actionable driver alterations may
be treated with genotype-matched targeted therapy, including RET inhibitors
for RET fusion-positive disease and BRAF-directed regimens in BRAF V600E-
driven refractory tumors.
treatment_term:
preferred_term: targeted therapy
term:
id: NCIT:C93352
label: Targeted Therapy
- name: Lenvatinib or Sorafenib
description: >-
Multi-kinase inhibitors are standard systemic options for progressive
radioiodine-refractory differentiated thyroid cancer when surgery and
radioiodine are no longer sufficient.
treatment_term:
preferred_term: targeted therapy
term:
id: NCIT:C93352
label: Targeted Therapy
therapeutic_agent:
- preferred_term: lenvatinib
term:
id: CHEBI:85994
label: lenvatinib
- preferred_term: sorafenib
term:
id: CHEBI:50924
label: sorafenib
- name: Cabozantinib
description: >-
Cabozantinib is a multi-kinase inhibitor (VEGFR2, MET, AXL, RET) used in the
second-line setting for radioiodine-refractory differentiated thyroid cancer
that has progressed during or after lenvatinib or sorafenib. This
VEGFR-TKI-refractory population previously had no standard of care; the
randomised placebo-controlled COSMIC-311 trial met its progression-free
survival endpoint at interim analysis, at the cost of substantially more
grade 3-4 toxicity (palmar-plantar erythrodysaesthesia, hypertension,
fatigue).
therapeutic_modality: SMALL_MOLECULE
treatment_term:
preferred_term: targeted therapy
term:
id: NCIT:C93352
label: Targeted Therapy
therapeutic_agent:
- preferred_term: cabozantinib
term:
id: CHEBI:72317
label: cabozantinib
evidence:
- reference: PMID:34237250
reference_title: "Cabozantinib for radioiodine-refractory differentiated thyroid cancer (COSMIC-311): a randomised, double-blind, placebo-controlled, phase 3 trial."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "Patients must have received previous lenvatinib or sorafenib and progressed during or after treatment with up to two VEGFR tyrosine kinase inhibitors."
explanation: Defines the second-line, VEGFR-TKI-refractory population in which cabozantinib was evaluated, downstream of the lenvatinib/sorafenib option already curated here.
- reference: PMID:34237250
reference_title: "Cabozantinib for radioiodine-refractory differentiated thyroid cancer (COSMIC-311): a randomised, double-blind, placebo-controlled, phase 3 trial."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "cabozantinib showed significant improvement in progression-free survival over placebo: median not reached ... versus 1·9 months (1·8-3·6); hazard ratio 0·22 (96% CI 0·13-0·36; p<0·0001)"
explanation: Reports the randomised progression-free survival benefit that supports cabozantinib as an active option after VEGFR-TKI failure.
- reference: PMID:34237250
reference_title: "Cabozantinib for radioiodine-refractory differentiated thyroid cancer (COSMIC-311): a randomised, double-blind, placebo-controlled, phase 3 trial."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "Grade 3 or 4 adverse events occurred in 71 (57%) of 125 patients receiving cabozantinib and 16 (26%) of 62 receiving placebo"
explanation: Quantifies the grade 3-4 toxicity burden stated in the description, so the efficacy claim is not curated without its safety cost.
- reference: PPR:PPR1274359
reference_title: "Efficacy, Safety, and Certainty of Evidence for Systemic Antineoplastic Therapies in Treatment-resistant Adult Malignancies: A Systematic Review, Exploratory Meta-analysis, and Grade Assessment"
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "Cabozantinib contributed high-certainty evidence for progression-free survival in radioiodine-refractory differentiated thyroid cancer after previous VEGFR-targeted therapy"
explanation: >-
GRADE certainty rating from a 2026 systematic review of treatment-resistant
malignancies, corroborating (not solely supporting) the COSMIC-311 result
above. Non-peer-reviewed preprint; cited only alongside the peer-reviewed
trial report.
clinical_trials:
- name: NCT03690388
phase: PHASE_III
status: ACTIVE_NOT_RECRUITING
description: >-
COSMIC-311: randomised, double-blind, placebo-controlled phase 3 trial of
cabozantinib in radioiodine-refractory differentiated thyroid cancer
(papillary or follicular and their variants) progressing after prior
VEGFR-targeted therapy. Primary endpoints were objective response rate and
progression-free survival.
evidence:
- reference: clinicaltrials:NCT03690388
reference_title: "A Phase 3, Randomized, Double-Blind, Placebo-Controlled Study of Cabozantinib (XL184) in Subjects With Radioiodine-Refractory Differentiated Thyroid Cancer Who Have Progressed After Prior Vascular Endothelial Growth Factor Receptor (VEGFR) -Targeted Therapy"
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
evaluate the effect of cabozantinib compared with placebo on progression
free survival (PFS) and objective response rate (ORR) in subjects with
Radioiodine-Refractory Differentiated Thyroid Cancer (DTC) who have
progressed after prior vascular endothelial growth factor receptor
(VEGFR)-Targeted therapy
explanation: The registered trial objective matches the second-line indication curated in the Cabozantinib treatment entry.
notes: >-
ClinicalTrials.gov API status checked 2026-08-16 reported
ACTIVE_NOT_RECRUITING. Primary results are reported in PMID:34237250, cited
on the Cabozantinib treatment entry.
prevalence:
- population: Worldwide
measure_type: ANNUAL_INCIDENCE
prevalence_class: COMMON
notes: >-
Papillary thyroid carcinoma is the most common thyroid malignancy, constituting
more than 70% of all thyroid cancers. Global incidence has been rising substantially
over recent decades, driven in part by increased use of thyroid ultrasound and
detection of small, clinically occult tumors. Incidence varies markedly by region,
with higher rates in countries with widespread thyroid imaging programs (e.g., the
United States, South Korea) and lower rates in lower-resource settings. Note: this
entry shares MONDO:0005075 with the BRAF_Mutant_Thyroid_Cancer and
RET_Fusion_Thyroid_Cancer molecular-subtype sibling entries; these subtypes
collectively represent a large proportion of the overall PTC incidence.
evidence:
- reference: PMID:21221869
reference_title: "Papillary thyroid carcinoma variants."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "Papillary thyroid carcinomas are the most common thyroid cancers and constitute more than 70% of thyroid malignancies."
explanation: Establishes PTC as the dominant thyroid cancer histotype comprising over 70% of all thyroid malignancies.
- reference: PMID:26462967
reference_title: "2015 American Thyroid Association Management Guidelines for Adult Patients with Thyroid Nodules and Differentiated Thyroid Cancer: The American Thyroid Association Guidelines Task Force on Thyroid Nodules and Differentiated Thyroid Cancer."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: "differentiated thyroid cancer is becoming increasingly prevalent"
explanation: ATA 2015 guidelines acknowledge the rising incidence of differentiated thyroid cancer (predominantly PTC).
disease_term:
preferred_term: papillary thyroid carcinoma
term:
id: MONDO:0005075
label: thyroid gland papillary carcinoma
mappings:
mondo_mappings:
- term:
id: MONDO:0005075
label: thyroid gland papillary carcinoma
mapping_predicate: skos:exactMatch
mapping_source: MONDO
mapping_justification: MONDO provides an exact disease term for papillary thyroid carcinoma; this is the same term used as `disease_term` for this entry.
ncit_mappings:
- term:
id: NCIT:C4035
label: Thyroid Gland Papillary Carcinoma
mapping_predicate: skos:exactMatch
mapping_source: NCIT
mapping_justification: NCIT provides an exact neoplasm term for papillary thyroid carcinoma; cross-referenced from MONDO:0005075.
classifications:
icdo_morphology:
classification_value: Carcinoma
harrisons_chapter:
- classification_value: ONCOLOGY_HEMATOLOGY
datasets:
- accession: ega:EGAS00001001268
title: Whole exome sequencing of papillary thyroid carcinoma in the Chinese population
description: Papillary thyroid carcinoma (PTC) is the most common type of thyroid cancer. Here we submitted the sequencing results for PTC using 91 tumor-normal pairs through exome sequencing in the Chinese Han population.
organism:
preferred_term: human
term:
id: NCBITaxon:9606
label: Homo sapiens
notes: 'European Genome-phenome Archive study, matched because the disease is named in the study''s own title ("Papillary Thyroid Carcinoma"); description-level mentions were not accepted. EGA study_type: Other. Controlled access -- data require a Data Access Agreement. EGA metadata retrieved 2026-08-01.'
- accession: ega:EGAS00001004101
title: The genomic landscape of metastatic papillary thyroid carcinoma and novel biomarkers for predicting distant metastasis
description: Papillary thyroid carcinoma (PTC) is the most common malignancy of the thyroid gland with arelatively high cure rate. Distant metastasis (DM) of PTC is uncommon, but when it occurs, itsignificantly decreases the survival of PTC patients. However, the molecular mechanisms of DMin PTCs have not been systematically studied. We performed whole exome sequencing andGeneseeqPrime (425 genes) panel sequencing of the primary tumor, plasma and matched whiteblood cell samples from 20 PTCs with DM and 46 PTCs without DM. We identified somaticmutations, gene fusions and copy number alterations and analyzed their relationships with DM ofPTCs.
organism:
preferred_term: human
term:
id: NCBITaxon:9606
label: Homo sapiens
notes: 'European Genome-phenome Archive study, matched because the disease is named in the study''s own title ("Papillary Thyroid Carcinoma"); description-level mentions were not accepted. EGA study_type: Other. Controlled access -- data require a Data Access Agreement. EGA metadata retrieved 2026-08-01.'
- accession: ega:EGAS00001005182
title: Pediatric Papillary Thyroid Carcinoma RNA-Seq
description: Papillary thyroid carcinoma (PTC) is the most common malignancy amongst adolescent and young adult women. Clinical and genomic features of PTC in children differ from those in adults. Historically, a substantial proportion (~50%) of pediatric PTC (PPTC) lack any of the common driver mutations typical of adult PTC. Thus, molecular diagnostics developed for adults may not be valid in children. We applied novel bioinformatic pipelines to RNASeq analysis of pediatric thyroid tumors to identify known and novel fusion oncogenes as drivers of tumorigenesis and to define gene expression patterns among tumors.
organism:
preferred_term: human
term:
id: NCBITaxon:9606
label: Homo sapiens
notes: 'European Genome-phenome Archive study, matched because the disease is named in the study''s own title ("Papillary Thyroid Carcinoma"); description-level mentions were not accepted. EGA study_type: Other. Controlled access -- data require a Data Access Agreement. EGA metadata retrieved 2026-08-01.'
This report is retrieval-only and is generated directly from Asta results.
search_papers_by_relevance with snippet_search.