Clinical trial Recruiting at 1 site Observational Ages 18 and up Women only

FRα expression in high-grade serous ovarian cancer (FRα positive)

Official title: Folate Receptor Alpha (FRα) Expression and Heterogeneity in Epithelial Ovarian Cancer

Run by Hellenic Cooperative Oncology Group · NCT07889843 · Data updated 2026-11-12

A retrospective study in Greece will test how often Folate Receptor Alpha is present in tumor samples from adults diagnosed with high-grade serous ovarian cancer.

Quick facts

Study typeObservational
Ages18 Years and up
SexWomen only
Enrollment200 (estimated)
SponsorHellenic Cooperative Oncology Group
Academic / other
Locations1 site (Athens)
StatusRecruiting
StartedJuly 10, 2026
Main results expectedDecember 30, 2026
Study endsApril 30, 2027
Registry record updatedOctober 22, 2026
Trial IDNCT07889843 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Women aged 18 or older with newly diagnosed high-grade serous epithelial ovarian cancer (including fallopian tube or primary peritoneal cancers) and adequate tissue samples.

Probably not a fit

Patients whose tumors are FRα-negative or whose tissue quality does not meet analysis criteria may not benefit from this biomarker assessment.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a single-country, retrospective biomarker study using FFPE tissue samples from about 200 women diagnosed between 2001 and 2025. Samples collected at initial diagnosis will be analyzed centrally with the Ventana FOLR1 RxDx assay to determine FRα expression. The primary goal is to determine the prevalence of FRα positivity, defined as at least 75% viable tumor cells showing moderate to strong membrane staining. Secondary analyses are not specified in the available description. Patients included are adults with high-grade serous epithelial ovarian cancer and adequate tissue; samples from relapsed disease are excluded.

Why it matters

Potential benefit: If FRα expression is common, it could guide future biomarker-driven testing and targeted therapies for ovarian cancer.

How similar studies have gone: Similar biomarker studies have shown the feasibility of centralized FRα testing in ovarian cancer with meaningful prevalence data, though the specific assay and population here are unique.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Female patients.
* 18 years of age or older.
* Patients diagnosed with high-grade serous epithelial ovarian cancer according to pathologists' report.

Exclusion Criteria:

* Diagnosis of non-epithelial ovarian tumors
* Diagnosis of endometrioid, mucinous, or clear cell carcinomas.
* Inadequate (poor quality or inadequate posology for analysis) tissue samples.

Where it's running

  • Hellenic Cooperative Oncology Group
    Athens, Greece
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.