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OPAL Master Protocol: A Phase 1B/2 Multicohort Umbrella Study to Evaluate the Safety and Efficacy of Novel Treatments and/or Combinations of Treatments in Participants with Ovarian Cancer (OPAL) (PR-3000-02-005/213357) Cohort C: Open-label Phase 2, Randomized, Controlled Multicenter Study Comparing Niraparib Versus Platinum-Taxane Doublet Chemotherapy as Neoadjuvant Treatment in Participants with Homologous Recombination- Deficient Stage III/IV Ovarian Cancer

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2023-505097-16-00
Acronym
213357
Enrollment
15
Registered
2024-02-07
Start date
2022-04-04
Completion date
2025-03-31
Last updated
2025-01-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Ovarian Neoplasms

Brief summary

The primary efficacy endpoint for this cohort is pre-IDS unconfirmed ORR, defined as the percentage of participants with unconfirmed CR or PR on study treatment pre-IDS as assessed per RECIST v1.1 by the Investigator.

Detailed description

Incidence of CA-125 progression per GCIG CA-125 response criteria, PFS, defined as the time from the date of treatment randomization to the date of first documentation of PD per RECIST v1.1 or death by any cause, whichever occurs first, as determined by the Investigator, OS, defined as the time from the date of treatment randomization to the date of death by any cause, TFST, defined as the time from the date of treatment randomization to the date of first subsequent anticancer therapy or death, Safety endpoints include frequency and severity of treatment-emergent adverse events, serious adverse events, AESIs, and dose modification (i.e., interruptions and discontinuations)., Change over time in frequency and severity of the items on the Patient Reported Outcomes-Common Terminology Criteria for Adverse Events during neoadjuvant treatment, Change from baseline in Functional Assessment of Cancer Therapy-Item GP5 during neoadjuvant treatment, Change from baseline in European Organisation for Research and Treatment of Cancer (EORTC) Quality of Life Questionnaire-Core 30 items (EORTC Item Library 136) pre-IDS, Change from baseline in EORTC Quality of Life Questionnaire for OC gastrointestinal items (EORTC Item Library 137) pre-IDS

Interventions

Sponsors

Tesaro Inc.
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
The primary efficacy endpoint for this cohort is pre-IDS unconfirmed ORR, defined as the percentage of participants with unconfirmed CR or PR on study treatment pre-IDS as assessed per RECIST v1.1 by the Investigator.

Secondary

MeasureTime frame
Incidence of CA-125 progression per GCIG CA-125 response criteria, PFS, defined as the time from the date of treatment randomization to the date of first documentation of PD per RECIST v1.1 or death by any cause, whichever occurs first, as determined by the Investigator, OS, defined as the time from the date of treatment randomization to the date of death by any cause, TFST, defined as the time from the date of treatment randomization to the date of first subsequent anticancer therapy or death, Safety endpoints include frequency and severity of treatment-emergent adverse events, serious adverse events, AESIs, and dose modification (i.e., interruptions and discontinuations)., Change over time in frequency and severity of the items on the Patient Reported Outcomes-Common Terminology Criteria for Adverse Events during neoadjuvant treatment, Change from baseline in Functional Assessment of Cancer Therapy-Item GP5 during neoadjuvant treatment, Change from baseline in European Organisation f

Countries

Spain

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026