Last updated on June 2020

A Study of Mirvetuximab Soravtansine in Advanced High-Grade Epithelial Ovarian Primary Peritoneal or Fallopian Tube Cancers With High Folate Receptor-Alpha Expression


Brief description of study

This study is designed to evaluate the efficacy and safety of mirvetuximab soravtansine (MIRV) in patients with platinum-resistant high-grade serous epithelial ovarian cancer, primary peritoneal, or fallopian tube cancer, whose tumors express a high-level of Folate Receptor-Alpha (FR). Patients will be, in the opinion of the Investigator, appropriate for single-agent therapy for their next line of therapy. All patients will receive single-agent MIRV at 6 mg/kg adjusted ideal body weight administered on Day 1 of every 3-week cycle.

Detailed Study Description

This study is designed to evaluate the efficacy and safety of mirvetuximab soravtansine (MIRV) in patients with platinum-resistant high-grade serous epithelial ovarian cancer, primary peritoneal, or fallopian tube cancer, whose tumors express a high-level of Folate Receptor Alpha (FR). Patients will be, in the opinion of the Investigator, appropriate for single-agent therapy for their next line of therapy. FR positivity will be defined by the Ventana FOLR1 (Folate Receptor 1/Folate Receptor Alpha) Assay.

Approximately 110 eligible patients will be enrolled to achieve a total of 105 efficacy evaluable patients. Efficacy evaluable patients include those who have measurable lesions per Response Evaluation Criteria in Solid Tumors, version 1.1 (RECIST v1.1) at baseline and received at least 1 dose of MIRV.

All patients will receive single-agent MIRV at 6 mg/kg adjusted ideal body weight (AIBW) administered on Day 1 of every 3-week cycle (Q3W).

Tumor response will be evaluated by the Investigator using RECIST v1.1. Computerized tomography (CT) or magnetic resonance imaging (MRI) scans will be collected for sensitivity analysis by blinded independent central review (BICR).

Patients will continue to receive MIRV until disease progression, unacceptable toxicity, withdrawal of consent, death, or until the Sponsor terminates the study (whichever comes first).

Tumor assessments, including radiological assessments by CT/MRI scans will be performed at Screening and subsequently every 61 weeks from Cycle 1 Day 1 (C1D1) for the first 36 weeks then every 123 weeks until disease progression, death, or the start of new anticancer therapy (whichever occurs first).

Patients who discontinue MIRV for reasons other than progressive disease (PD) will continue with tumor assessments until documentation of PD or the start of a new anticancer therapy, whichever comes first. Prior to Week 36 (from Cycle 1, Day 1), assessments should occur every 6 weeks ( 1 week) as allowed by local requirements but must occur at an interval of no more than 12 weeks ( 1 week). After Week 36, assessment will occur every 12 weeks ( 3 weeks) until documentation of PD or the start of new anticancer therapy.

All patients who discontinue MIRV will be followed for survival every 31 months until death, lost to follow-up, withdrawal of consent for survival follow-up, or end of study (EOS) (whichever comes first). Additional survival follow-up calls may occur periodically, if needed.

Clinical Study Identifier: NCT04296890

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