Metastatic Ovarian Cancer

Metastatic Ovarian Cancer (advanced epithelial ovarian cancer; FIGO stage IV) — Disease Characteristics Research Report

2026-05-10
Falcon MONDO:0005211 Model: Edison Scientific Literature 40 citations

Metastatic Ovarian Cancer (advanced epithelial ovarian cancer; FIGO stage IV) — Disease Characteristics Research Report

Scope and terminology

This report focuses on advanced/metastatic epithelial ovarian cancer (EOC), including ovarian, fallopian tube, and primary peritoneal carcinomas with advanced-stage dissemination (commonly FIGO III–IV), and particularly metastatic disease corresponding to FIGO stage IV. In contemporary clinical guidance, “advanced EOC” is often used operationally for stage III–IV disease and drives shared diagnostic and treatment pathways. (ghirardi2023diagnosticandtherapeutic pages 1-2, perezfidalgo2024seom–geicoclinicalguideline pages 1-2)

Key concept definitions (current understanding)

  • Peritoneal metastasis / carcinomatosis: the most common route of spread in ovarian cancer at diagnosis or recurrence (transcoelomic spread in the peritoneal cavity). (tsili2024imagingofperitoneal pages 1-2)
  • Primary debulking surgery (PDS) vs neoadjuvant chemotherapy followed by interval debulking surgery (NACT-IDS): two standard first-line strategies for advanced disease; the clinical goal is no gross residual disease when surgery is undertaken. (ghirardi2023diagnosticandtherapeutic pages 1-2, ghirardi2023diagnosticandtherapeutic pages 5-7)
  • Platinum resistance (clinical concept): commonly defined by platinum-free interval <6 months (vs platinum-sensitive ≥6 months), influencing subsequent-line strategy and trial eligibility. (caruso2025ovariancancera pages 8-9)
  • Biomarker-selected therapy: treatment selection based on BRCA/HRD (PARP inhibitor sensitivity) and FRα (FOLR1) expression (eligibility for mirvetuximab soravtansine in platinum-resistant disease). (ghirardi2023diagnosticandtherapeutic pages 7-8, perezfidalgo2024seom–geicoclinicalguideline pages 1-2)

Target disease identifiers and synonyms

Ontology/identifier snapshot

  • MONDO: Ovarian cancer MONDO:0008170 (used as the nearest disease-level ontology concept in Open Targets; metastatic subtype was not available as a distinct MONDO term in retrieved evidence). (OpenTargets Search: metastatic ovarian cancer,ovarian carcinoma)
  • MeSH / ICD: In practice, metastatic ovarian cancer is commonly coded under ovarian malignancy (e.g., ICD-10 C56), while metastatic status is captured by staging (FIGO) rather than a distinct ICD code in many workflows (not uniquely resolved in retrieved evidence). (perezfidalgo2024seom–geicoclinicalguideline pages 1-2)

Common synonyms and alternative names

  • Metastatic ovarian cancer; stage IV epithelial ovarian cancer; advanced ovarian cancer; ovarian cancer with peritoneal metastases; advanced epithelial ovarian cancer; advanced tubo-ovarian carcinoma; ovarian/fallopian tube/primary peritoneal cancer (advanced). (ghirardi2023diagnosticandtherapeutic pages 1-2, perezfidalgo2024seom–geicoclinicalguideline pages 1-2)

Evidence source type

Information here is derived primarily from aggregated disease-level resources and guidelines (e.g., ASCO, SEOM–GEICO; systematic reviews), plus multicenter retrospective cohorts and phase II/III clinical trials in advanced/metastatic settings. (ghirardi2023diagnosticandtherapeutic pages 1-2, ghirardi2023diagnosticandtherapeutic pages 5-7, perezfidalgo2024seom–geicoclinicalguideline pages 1-2)

1. Disease information (overview)

Ovarian cancer is a leading cause of gynecologic cancer mortality and most patients present at advanced stage. In a diagnostic/treatment pathway review focused on advanced ovarian cancer with peritoneal metastases, the authors state: “Over two thirds of ovarian cancer patients present with advanced stage disease” and standard treatment includes cytoreductive surgery plus carboplatin–paclitaxel chemotherapy. (ghirardi2023diagnosticandtherapeutic pages 1-2)

2. Etiology

2.1 Disease causal factors (mechanistic, genetic)

Inherited DNA repair defects are a major causal contributor to a clinically actionable subset of EOC. Open Targets disease–gene associations for ovarian cancer highlight DNA repair genes and other cancer genes, including BRCA1, BRCA2, RAD51C, RAD51D, BRIP1, PALB2, MSH2, MSH6, and TP53. (OpenTargets Search: metastatic ovarian cancer,ovarian carcinoma)

A contemporary clinical review summarizing risk and prevention reports: “Approximately one-quarter of ovarian cancers are hereditary” and that BRCA1/2 account for a substantial fraction of hereditary cases. (caruso2025ovariancancera pages 3-3)

2.2 Risk factors (genetic, environmental, reproductive)

Quantitative associations reported in a large contemporary review include: * Endometriosis: hazard ratio 4.20 (95% CI 3.59–4.91) in one cited analysis. (caruso2025ovariancancera pages 3-3) * Infertility: standardized incidence ratio 2.0 (95% CI 1.8–4.0). (caruso2025ovariancancera pages 3-3) * Postmenopausal estrogen therapy: relative risk 1.31 (95% CI 1.21–1.41). (caruso2025ovariancancera pages 3-3) * Familial/genetic risk: BRCA carrier lifetime ovarian cancer risk estimated broadly as 20%–70% in one clinical synthesis. (caruso2025ovariancancera pages 3-3)

A clinical risk assessment review provides genotype-stratified absolute lifetime risks: * BRCA1: 39%–58%; BRCA2: 13%–29%. (days2025ovariancancerrisk pages 2-4)

2.3 Protective factors

Protective reproductive/hormonal factors with quantitative effect estimates include: * Multiparity: OR per additional birth 0.81 (95% CI 0.75–0.85). (caruso2025ovariancancera pages 3-3) * Breastfeeding: OR 0.72 (95% CI 0.68–0.76). (caruso2025ovariancancera pages 3-3) * Oral contraceptive use: OR 0.66 (95% CI 0.52–0.83). (caruso2025ovariancancera pages 3-3)

A global epidemiology review quantifies similar protective associations: * Ever vs never oral contraceptives: OR 0.73 (95% CI 0.70–0.76); each 5 years of use associated with ~20% lower risk (95% CI 18–23%). (li2026globalepidemiologyof pages 5-7) * Breastfeeding: ~10% lower risk per 12 months (RR 0.89, 95% CI 0.84–0.94). (li2026globalepidemiologyof pages 5-7)

2.4 Gene–environment interactions

Robust, clinically used gene–environment interaction models specific to metastatic presentation were not identifiable from the retrieved evidence; however, available clinical syntheses emphasize that inherited BRCA-associated risk intersects with reproductive/hormonal exposures (e.g., oral contraceptives) relevant to prevention decisions. (days2025ovariancancerrisk pages 2-4, caruso2025ovariancancera pages 3-3)

3. Phenotypes (clinical presentation)

3.1 Common clinical phenotypes in metastatic/advanced disease

Advanced EOC frequently presents with extensive intraperitoneal tumor burden and/or pleural involvement, driving symptoms such as abdominal distension and respiratory symptoms. A prevention/early-detection implementation review notes that CA-125 is elevated in ~80% of advanced ovarian cancer, reflecting the frequent high tumor burden at advanced presentation. (masouleh2024exploringopportunisticsalpingectomy pages 19-23)

Suggested HPO terms (phenotype mapping; typical in advanced disease)

Because the retrieved evidence base emphasizes diagnostic pathways rather than symptom prevalence tables, the following HPO mappings are proposed as standard phenotype representations for advanced/metastatic EOC, without frequency claims: * Ascites — HP:0001541 * Abdominal distension — HP:0003270 * Abdominal pain — HP:0002027 * Pleural effusion — HP:0002202 * Dyspnea — HP:0002094 * Elevated CA-125 — HP:0032943 (as a biomarker abnormality)

3.2 Quality-of-life impact

Peritoneal dissemination is repeatedly highlighted as clinically consequential because it complicates resectability and contributes to morbidity and recurrence risk; peritoneal metastasis mapping is positioned as crucial for planning therapy and predicting feasibility of complete cytoreduction. (tsili2024imagingofperitoneal pages 1-2)

4. Genetic / molecular information

4.1 Major causal/driver genes and biomarker concepts

Key clinically actionable molecular concepts for metastatic/advanced EOC include: * BRCA1/BRCA2 alterations (germline and somatic) and broader homologous recombination deficiency (HRD), which predict benefit from PARP inhibitors. (ghirardi2023diagnosticandtherapeutic pages 7-8, caruso2025ovariancancera pages 3-3) * TP53 alterations: a hallmark of high-grade serous ovarian cancer (frequently referenced in epidemiology and molecular summaries and in Open Targets associations), though not typically used alone to select current approved therapies. (OpenTargets Search: metastatic ovarian cancer,ovarian carcinoma, masouleh2024exploringopportunisticsalpingectomy pages 19-23) * FRα (FOLR1) expression: predictive biomarker for mirvetuximab soravtansine benefit in platinum-resistant disease; MIRASOL required ≥75% of cells with ≥2+ staining intensity. (perezfidalgo2024seom–geicoclinicalguideline pages 1-2)

4.2 Biomarker-linked treatment selection (real-world implementation)

The SEOM–GEICO 2023 guideline summary emphasizes that new predictive biomarkers enable selection for targeted agents, and that diagnostics should enable biomarker analysis (adequate tissue sampling, cytology for effusions/ascites when present, and molecular profiling). (perezfidalgo2024seom–geicoclinicalguideline pages 1-2)

5. Mechanism / pathophysiology (metastasis-focused)

A metastasis-relevant mechanistic chain supported directly by the retrieved evidence is: 1) Primary tubo-ovarian/peritoneal carcinoma develops and sheds tumor into peritoneal cavity → 2) Peritoneal metastases become the predominant spread pattern at diagnosis/recurrence → 3) Peritoneal tumor distribution determines feasibility of complete cytoreduction and drives selection between PDS and NACT-IDS → 4) Residual disease after surgery strongly predicts outcomes. (ghirardi2023diagnosticandtherapeutic pages 1-2, tsili2024imagingofperitoneal pages 1-2)

Ontology suggestions (mechanism mapping): * GO biological processes (suggested): epithelial cell proliferation (GO:0050673), cell adhesion (GO:0007155), extracellular matrix organization (GO:0030198), angiogenesis (GO:0001525), DNA repair (GO:0006281). * CL cell types (suggested): epithelial cell (CL:0000066), fibroblast (CL:0000057), macrophage (CL:0000235), mesothelial cell (CL:0000077).

6. Anatomical structures affected

Organ/tissue distribution relevant to metastatic disease

Peritoneal spread involves structures of the peritoneal cavity and abdominopelvic regions. Imaging meta-analysis emphasizes mapping peritoneal disease extent for surgical planning. (tsili2024imagingofperitoneal pages 1-2)

Stage IV subclassification highlights thoracic involvement: * A multicenter stage IV cohort described FIGO IVA vs IVB outcomes, consistent with pleural involvement defining a distinct stage IV group (IVA) with worse prognosis than IVB in that dataset. (metairie2023asuggestedmodification pages 11-12)

UBERON term suggestions: * Ovary — UBERON:0000992 * Fallopian tube — UBERON:0003889 * Peritoneum — UBERON:0002358 * Greater omentum — UBERON:0003688 * Pleural cavity/pleura — UBERON:0000175 / UBERON:0002097

7. Temporal development (onset and progression)

Advanced EOC typically presents after an insidious course; in one implementation-focused prevention review, the authors emphasize that early symptoms can be vague and that disease may progress rapidly, contributing to late-stage diagnosis. (masouleh2024exploringopportunisticsalpingectomy pages 19-23)

8. Inheritance and population

8.1 Epidemiology (recent statistics)

US burden (2024): an imaging systematic review reports that in the United States ~19,680 cases and 12,740 deaths were expected in 2024, and cites an overall 5-year relative survival ~48% for ovarian cancer. (tsili2024imagingofperitoneal pages 1-2)

Global burden and trends (2022–2021): * A contemporary review reports ~324,398 new cases and 206,839 deaths globally (2022). (caruso2025ovariancancera pages 2-3) * Global age-standardized incidence decreased from 7.22 to 6.71 per 100,000 (1990–2021); global mortality decreased from 4.73 to 4.06 per 100,000 (1999–2021). (li2026globalepidemiologyof pages 1-2)

8.2 Inheritance patterns

Risk is substantially elevated in hereditary cancer syndromes (e.g., BRCA1/2). Clinical risk review notes that 10%–15% of ovarian cancers have a germline BRCA mutation and provides BRCA1/2 lifetime risk ranges. (days2025ovariancancerrisk pages 2-4)

9. Diagnostics

9.1 Diagnostic pathway (guideline-aligned; real-world implementation)

The diagnostic process in advanced disease is designed to (i) confirm malignancy and histotype, (ii) stage and map disease, and (iii) determine likelihood of complete cytoreduction.

ASCO guideline update (published 2025-03-??; DOI available) explicitly recommends that patients with suspected stage III–IV disease be evaluated by a gynecologic oncologist and that evaluation includes CA-125, CT abdomen/pelvis, and chest imaging, and that all patients be offered germline genetic and somatic testing at diagnosis. In addition, ASCO specifies histologic confirmation before starting NACT and recommends a platinum–taxane doublet for NACT. (perezfidalgo2024seom–geicoclinicalguideline pages 1-2)

SEOM–GEICO 2023 guideline (published 2024-07; https://doi.org/10.1007/s12094-024-03531-3) emphasizes: * Physical examination and labs including CA-125, plus pelvic ultrasound. * CT chest/abdomen/pelvis for disease extent; MRI and PET-CT as adjuncts in advanced disease. * Initial laparoscopy to obtain histopathology and evaluate feasibility of complete cytoreduction; use of peritoneal extension scoring (e.g., PCI, Fagotti score) for surgical planning. (perezfidalgo2024seom–geicoclinicalguideline pages 1-2)

9.2 Imaging for peritoneal metastases (systematic review evidence)

A 2024 systematic review/meta-analysis (33 studies; 487 women) concludes MRI and FDG PET/CT have higher per-patient sensitivity than MDCT for detecting peritoneal metastases, and reiterates the clinical importance of mapping peritoneal disease distribution. (tsili2024imagingofperitoneal pages 1-2)

9.3 Laparoscopy and tumor burden scoring

In a pathway review, the authors note that CT and CA-125 have limitations for predicting optimal cytoreduction, whereas laparoscopic assessment using validated scoring provides the highest specificity for identifying patients likely to undergo suboptimal cytoreduction and thus best suited to NACT-IDS. (ghirardi2023diagnosticandtherapeutic pages 1-2)

9.4 Liquid biopsy (emerging; advanced disease monitoring)

While not standard-of-care for primary diagnosis in advanced EOC in the retrieved guideline excerpts, evolving studies suggest ctDNA/cfDNA may correlate with CA-125 and potentially identify recurrence earlier than CT/CA-125 changes in small cohorts; however, broad clinical implementation remains investigational. (tsili2024imagingofperitoneal pages 1-2)

10. Treatment

10.1 First-line backbone and surgical strategy

Standard first-line management consists of cytoreductive surgery (with the goal of no gross residual disease) plus carboplatin–paclitaxel chemotherapy. (ghirardi2023diagnosticandtherapeutic pages 1-2, ghirardi2023diagnosticandtherapeutic pages 7-8)

Choosing PDS vs NACT-IDS (trial evidence summarized in 2023 review)

Randomized evidence summarized for advanced disease includes: * EORTC-55971: median OS 29 vs 30 months (PDS vs NACT-IDS). (ghirardi2023diagnosticandtherapeutic pages 5-7) * CHORUS: median OS 22.8 vs 24.5 months (PDS vs NACT-IDS). (ghirardi2023diagnosticandtherapeutic pages 5-7) * Pooled analysis (FIGO stage IV subgroup): median OS 21.2 vs 24.3 months and median PFS 9.7 vs 10.6 months, favoring NACT-IDS in that analysis. (ghirardi2023diagnosticandtherapeutic pages 5-7)

10.2 Anti-angiogenic therapy (bevacizumab)

A review excerpt summarizes two major phase 3 trials: * GOG-0218: bevacizumab strategy PFS 14.1 vs 10.3 months. * ICON7: PFS 24.1 vs 22.4 months. These results support modest PFS improvements when bevacizumab is added to chemotherapy and continued as maintenance in selected advanced settings. (caruso2025ovariancancera pages 8-8)

10.3 PARP inhibitor maintenance (HRD/BRCA-guided)

In a pathway review, SOLO-1 is summarized as showing HR 0.30 (95% CI 0.23–0.41) for progression/death with olaparib maintenance, and median PFS not reached vs 13.8 months at 41-month follow-up in that trial context. (ghirardi2023diagnosticandtherapeutic pages 7-8)

10.4 Antibody–drug conjugate targeting FRα: mirvetuximab soravtansine

SORAYA (phase II; JCO 2023-05; https://doi.org/10.1200/JCO.22.01900) abstract states: * ORR 32.4% (95% CI 23.6–42.2); median duration of response 6.9 months. * Common adverse events included blurred vision (41%) and keratopathy (29%). (perezfidalgo2024seom–geicoclinicalguideline pages 1-2)

MIRASOL (phase 3; NEJM 2023-12; https://doi.org/10.1056/NEJMoa2309169) abstract states: * Median PFS 5.62 vs 3.98 months; ORR 42.3% vs 15.9%. * Median OS 16.46 vs 12.75 months. * Grade ≥3 adverse events 41.7% vs 54.1%. (perezfidalgo2024seom–geicoclinicalguideline pages 1-2)

A 2024 update on SORAYA reports final median OS 15.0 months (95% CI 11.5–18.7) at data cut-off 2022-12-22, supporting clinically meaningful activity in FRα-high platinum-resistant disease. (perezfidalgo2024seom–geicoclinicalguideline pages 1-2)

Suggested MAXO terms (treatments)

11. Outcome / prognosis

Stage IV heterogeneity

A multicenter retrospective study of FIGO stage IV epithelial ovarian cancer (n=307) reported worse outcomes for stage IVA vs IVB: * Median OS 31 vs 45 months and median PFS 18 vs 25 months (IVA vs IVB), suggesting meaningful prognostic heterogeneity within stage IV and supporting efforts to refine stage IV subclassification. (metairie2023asuggestedmodification pages 11-12)

Peritoneal tumor burden and outcomes

Disease mapping and completeness of cytoreduction are repeatedly emphasized as prognostically critical; the pathway review notes that achieving no gross residual disease is the surgical goal and that residual disease volume strongly predicts survival. (ghirardi2023diagnosticandtherapeutic pages 1-2, ghirardi2023diagnosticandtherapeutic pages 5-7)

12. Prevention

12.1 Primary prevention and risk reduction (high-risk genetics)

A clinical review reports that bilateral salpingo-oophorectomy is the most effective preventive option for high-risk women; a pooled analysis of 9,192 BRCA1/2 carriers found an 81% risk reduction over 4 years (HR 0.19, 95% CI 0.13–0.27). (caruso2025ovariancancera pages 3-3)

12.2 Opportunistic salpingectomy (average-risk prevention strategy)

A global epidemiology review reports unilateral or bilateral salpingectomy associated with reduced ovarian cancer risk (HR 0.65, 95% CI 0.52–0.81). (li2026globalepidemiologyof pages 5-7)

A feasibility/safety synthesis of opportunistic salpingectomy in general surgery settings suggests relative safety in limited data (no complications attributable to the procedure in 140 patients across included studies) and reports feasibility in selected procedures (e.g., successful in 98/105 cholecystectomies in one study). (perezfidalgo2024seom–geicoclinicalguideline pages 1-2)

12.3 Screening limitations (secondary prevention)

A prevention/implementation review reports that large screening trials have not demonstrated clear mortality benefit: * PLCO (78,286 women): CA-125 + transvaginal ultrasound had PPV 26.5% and no survival benefit at 15 years. * UKCTOCS: no significant survival improvement. (masouleh2024exploringopportunisticsalpingectomy pages 19-23)

13. Model organisms and experimental systems

Direct evidence on specific ovarian cancer animal models and organoid/PDX systems was not extracted into the citable evidence set for this report. As a result, this section is not populated with model-specific performance claims.

Recent developments (2023–2024 prioritized highlights)

1) Imaging evidence base update (2024): systematic review/meta-analysis supports MRI and FDG PET/CT as preferred modalities (vs MDCT) for detecting peritoneal metastases in ovarian cancer, emphasizing the need for disease mapping to guide surgery. (tsili2024imagingofperitoneal pages 1-2) 2) Guideline-driven diagnostic pathway emphasis (2024): SEOM–GEICO (2023 guideline published 2024) highlights structured workup including CA-125, CT chest/abdomen/pelvis, and the increasing role of laparoscopy-based scoring and biomarker-informed therapy selection. (perezfidalgo2024seom–geicoclinicalguideline pages 1-2) 3) Targeted therapy implementation: mirvetuximab soravtansine demonstrates clinically meaningful benefit in FRα-high platinum-resistant ovarian cancer (SORAYA 2023; MIRASOL 2023), supporting routine FRα testing in this setting. (perezfidalgo2024seom–geicoclinicalguideline pages 1-2)

Key diagnostic/treatment pathway figure (evidence-supported visual)

A diagnostic/therapeutic pathway algorithm figure (Figure 1) from a 2023 review illustrates how clinical assessment, biopsy confirmation, and laparoscopic scoring guide selection between PDS and NACT-IDS in advanced disease. (ghirardi2023diagnosticandtherapeutic media b74131ac)

Structured summary table (for knowledge base ingestion)

Table (click to expand)
Domain Summary Key sources
Disease definition, identifiers, synonyms Advanced/metastatic epithelial ovarian cancer refers to epithelial ovarian, fallopian tube, or primary peritoneal carcinoma presenting with disseminated intra-abdominal disease and/or distant metastasis; advanced disease is commonly stage III–IV, and metastatic disease generally corresponds to FIGO stage IV. Common synonyms used in the literature include advanced ovarian cancer, stage IV epithelial ovarian cancer, metastatic ovarian cancer, ovarian cancer with peritoneal metastases, and advanced epithelial ovarian cancer. Disease-level aggregated resources/tools referenced include Open Targets association data for ovarian cancer (MONDO_0008170). MeSH/ICD-10 identifiers are variably applied in practice to ovarian malignancy rather than a unique metastatic subtype; ICD-10 commonly maps ovarian cancer to C56. Open Targets context (ovarian cancer MONDO_0008170); Ghirardi 2023 https://doi.org/10.3390/cancers15020407; Métairie 2023 https://doi.org/10.3390/cancers15030706
Key clinical characteristics and spread pattern Peritoneal metastases are the most common route of spread at diagnosis and recurrence. FIGO stage IVA denotes pleural effusion/pleural involvement; stage IVB denotes parenchymal metastases and/or extra-abdominal lymph node metastases. In one multicenter stage IV cohort (n=307), median OS was 31 months for stage IVA versus 45 months for stage IVB; median PFS 18 versus 25 months. Tsili 2024 https://doi.org/10.3390/cancers16081467; Métairie 2023 https://doi.org/10.3390/cancers15030706
Diagnostic workup Guideline-level workup includes gynecologic oncologist assessment, CA-125, CT abdomen/pelvis plus chest imaging, and germline and somatic testing at diagnosis. Cross-sectional imaging maps disease burden and unresectable sites. MRI and FDG PET/CT showed higher per-patient sensitivity than MDCT in a meta-analysis (33 studies, 487 women); MRI vs MDCT p=0.03, PET/CT vs MDCT p<0.01; MRI vs PET/CT p=0.84. Histologic confirmation is recommended before neoadjuvant chemotherapy. Diagnostic laparoscopy with Fagotti/laparoscopic predictive index assessment is highlighted as the most specific approach to identify patients unlikely to achieve optimal cytoreduction. The Peritoneal Cancer Index (PCI; 13 abdominopelvic regions) quantifies tumor burden and has prognostic value. CA-125 is useful but limited alone for predicting resectability. ASCO update 2025 https://doi.org/10.1200/jco-24-02589; Perez-Fidalgo 2024 https://doi.org/10.1007/s12094-024-03531-3; Tsili 2024 https://doi.org/10.3390/cancers16081467; Ghirardi 2023 https://doi.org/10.3390/cancers15020407; Rizzo 2025 https://doi.org/10.1007/s00330-024-11300-7
Molecular biomarkers and clinical use BRCA1/2: predictive for platinum/PARP inhibitor benefit; maintenance selection. HRD: central biomarker for PARP inhibitor maintenance; prevalence varies across trials and assays; clinically relevant in first-line maintenance selection. TP53: near-ubiquitous hallmark of high-grade serous disease and useful as a molecular disease-defining feature rather than a routine therapy-selection biomarker. FRα: biomarker for mirvetuximab eligibility in platinum-resistant disease; MIRASOL required ≥75% of cells with ≥2+ staining intensity, and SORAYA enrolled FRα-high tumors. Open Targets disease associations prominently include BRCA1, BRCA2, RAD51C, TP53, RAD51D, BRIP1, PALB2, MSH2, and MSH6. Paik 2023 https://doi.org/10.3390/cancers15123095; Moore 2023 https://doi.org/10.1056/NEJMoa2309169; Matulonis 2023 https://doi.org/10.1200/jco.22.01900; Open Targets context
Standard first-line treatment backbone Standard treatment combines cytoreductive surgery and platinum-taxane chemotherapy. Typical first-line regimen is carboplatin plus paclitaxel every 3 weeks for 6 cycles. Goal of surgery is no gross residual disease. Ghirardi 2023 https://doi.org/10.3390/cancers15020407; Caruso 2025 review excerpt
Primary debulking surgery (PDS) vs neoadjuvant chemotherapy (NACT-IDS) PDS is preferred when complete or near-complete cytoreduction is feasible with acceptable morbidity; NACT followed by interval debulking is favored when complete upfront cytoreduction is unlikely or perioperative risk is high. EORTC-55971 (670 patients): median OS 29 vs 30 months (PDS vs NACT-IDS). CHORUS (550 patients): median OS 22.8 vs 24.5 months. Pooled analysis in FIGO stage IV: median OS 21.2 vs 24.3 months and median PFS 9.7 vs 10.6 months, favoring NACT-IDS. SCORPION (171 patients): median PFS 15 vs 14 months and median OS 41 vs 43 months, with less morbidity for NACT-IDS. Ghirardi 2023 https://doi.org/10.3390/cancers15020407; ASCO update 2025 https://doi.org/10.1200/jco-24-02589
HIPEC In selected stage III patients treated with NACT/interval surgery, HIPEC may be offered in experienced centers. Randomized data cited in review: cisplatin 100 mg/m2 at IDS improved PFS 14.2 vs 10.7 months and OS 45.7 vs 33.9 months; meta-analysis HR 0.585 for PFS and HR 0.519 for OS. Ghirardi 2023 https://doi.org/10.3390/cancers15020407; ASCO update 2025 https://doi.org/10.1200/jco-24-02589
Bevacizumab Added to chemotherapy then continued as maintenance, bevacizumab prolonged PFS in major first-line trials: GOG-0218 14.1 vs 10.3 months; ICON7 24.1 vs 22.4 months. In a high-risk subgroup, ICON7 OS was 39.3 vs 34.5 months (HR 0.78). Caruso 2025 review excerpt; Ghirardi 2023 https://doi.org/10.3390/cancers15020407
PARP inhibitor maintenance PARP inhibitors are central maintenance options after response to first-line platinum, particularly in BRCA-mutated/HRD-positive disease. SOLO-1: olaparib reduced risk of progression/death by 70% (HR 0.30, 95% CI 0.23–0.41); median PFS not reached vs 13.8 months at 41-month follow-up. Seven-year SOLO-1 OS data reported in review excerpt: 67.0% vs 46.5%; median OS not reached vs 75.2 months; HR 0.55 (95% CI 0.40–0.76). Ghirardi 2023 https://doi.org/10.3390/cancers15020407; Caruso 2025 review excerpt; Paik 2023 https://doi.org/10.3390/cancers15123095
Mirvetuximab soravtansine: SORAYA Biomarker-selected option for FRα-high platinum-resistant ovarian cancer after prior bevacizumab. SORAYA enrolled 106 patients; 105 efficacy-evaluable; 51% had 3 prior lines; 48% prior PARP inhibitor. ORR 32.4% (95% CI 23.6–42.2), including 5 complete and 29 partial responses; median duration of response 6.9 months (95% CI 5.6–9.7); final median OS 15.0 months (95% CI 11.5–18.7). Common treatment-related adverse events: blurred vision 41% (grade 3–4: 6%), keratopathy 29% (grade 3–4: 9%), nausea 29% (grade 3–4: 0%). Matulonis 2023 https://doi.org/10.1200/jco.22.01900; Coleman 2024 https://doi.org/10.1136/ijgc-2024-005401
Mirvetuximab soravtansine: MIRASOL Phase 3 confirmatory trial in FRα-positive platinum-resistant high-grade serous ovarian cancer (453 randomized; 227 MIRV, 226 chemotherapy). Median PFS 5.62 vs 3.98 months; ORR 42.3% vs 15.9%; median OS 16.46 vs 12.75 months; grade ≥3 adverse events 41.7% vs 54.1%; serious adverse events 23.9% vs 32.9%; discontinuations 9.2% vs 15.9%. Moore 2023 https://doi.org/10.1056/NEJMoa2309169
Prognosis / survival context Most ovarian cancers present at advanced stage; approximately 75% present advanced and advanced-stage 5-year survival is generally poor. Review excerpts cite overall 5-year survival of roughly 10–40% for advanced-stage disease; stage-specific SEER-derived figures in one study were 17% 5-year relative survival for stage IV. High PCI predicts worse survival with pooled HR 2.79 for OS and 1.89 for PFS in advanced disease. Ghirardi 2023 https://doi.org/10.3390/cancers15020407; Zhang 2024 https://doi.org/10.1186/s12905-024-03199-5; Wang 2024 https://doi.org/10.3389/fonc.2024.1421828; Caruso 2025 review excerpt

Table: This table condenses identifiers, staging, diagnostic workup, biomarkers, and major treatment trial metrics for metastatic/advanced epithelial ovarian cancer. It is designed as a quick-reference artifact for knowledge base population and narrative synthesis.

References (URLs and publication dates)

References

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