Combination Therapy for Cancers with DNA Repair Gene Mutations

This study is testing a combination of two drugs, niraparib and irinotecan, for people with metastatic (spread throughout the body) solid tumors that have specific changes (mutations) in their DNA repair genes, such as BRCA1, BRCA2, ATM, or PALB2. Niraparib is a PARP inhibitor (PARPi), which is a type of drug that can help fight cancer by targeting these DNA repair issues. Researchers want to find out if this combination is safe, what the best dose is, and if it shows any early signs of being effective. The study plans to enroll 24 participants. The current recruitment status is unclear.

Study design
This is an open-label (everyone knows which treatment is given), non-randomized Phase 1b study. It will enroll 24 participants in small groups to find the right dose.
What's involved
Participants will receive niraparib orally and irinotecan intravenously (through a vein). Treatment continues until the disease gets worse, side effects are too much, or the participant withdraws.
Compensation
Not stated in the trial record.
Follow-up
Safety and side effects will be measured for 30 days after the last dose of treatment.

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NCT05694715

Combination Therapy in Cancers With Mutations in DNA Repair Genes

Recruiting
PHASE1Ages 18+InterventionalTreatment
University of California, San Francisco
~24 participants
Updated 2026-06-18 on ClinicalTrials.gov
What's tested:NiraparibIrinotecan

At a glance

Recruiting sites
1 of 1 listed site is recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Percentage of participants with treatment-emergent adverse events
Measured over 30 days after the last dose
+3 more outcomes measured
Metastatic Solid Tumor
BRCA1 Mutation
BRCA2 Mutation
ATM Gene Mutation
PALB2 Gene Mutation
1 sites across 1 states
California1
  • Varun Monga, MBBS · PRINCIPAL_INVESTIGATOR · University of California, San Francisco
Early Phase Cancer Clinical Trials Recruitment
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  • Percentage of participants with treatment-emergent adverse events30 days after the last dose

    The percentage of participants with treatment-emergent adverse events as classified and graded by the NCI Common Terminology Criteria for Adverse Events (CTCAE) version 5 will be reported

  • Maximum Tolerated Dose (MTD)30 days after the last dose

    The MTD is defined as the highest dose studied for which the observed incidence of DLT is less than 33% or occurs within at most one out of six patients treated at any given dose level.

  • Percentage of participants with Dose Limiting Toxicities (DLTs)30 days after the last dose

    The percentage of participants with documented dose-limiting toxicities will be reported by dose level.

  • Recommended Phase 2 Dose (RP2D)Up to 2 years

    The RP2D will be selected based on the evaluation of dose-limiting toxicities and adverse events measured using CTCAE v5.0.