CI

At a glance

ClinicalIndex Comparison Record
Phase 2Completed· 9 enrolled / 9 target
Drug / intervention
Pembrolizumab +2 moredrug
Likely dose
Pembrolizumab 200mgfrom record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT05379972
NCT05379972Phase 2CompletedUpdate Overdue (0.2/mo)Completion was 16mo ago

Study of Induction SBRT and Olaparib Followed by Combination Pembrolizumab/Olaparib in Gastric and Gastroesophageal Junction (GEJ) Cancers

University of Colorado, Denver·interventional·Posted May 18, 2022·Updated Jun 5, 2026

In Brief

A Phase 2 clinical trial evaluating Pembrolizumab, Olaparib, and 1 other intervention for Gastric Cancer and GastroEsophageal Cancer. Completed, enrolled 9 participants across 4 sites.

Signals

Enrollment appears stalled

Detailed Summary

This study is an open-label, phase II study with a safety lead-in to assess the response rate of induction olaparib and stereotactic beam radiotherapy (SBRT) followed by combination olaparib/pembrolizumab in patients with metastatic gastric and GEJ cancers after at least one of therapy.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
CountriesUnited States

Timeline

Phase 2CompletedFinished
2023202420252026
First PostedMay 18, 2022
Enrollment StartJan 12, 2023
Primary CompletionFeb 24, 2025
Study CompletionJan 22, 2026
TodayJul 2, 2026
Enrollment to primary: 2.1 yearsPosted 4.1 years ago

Arms & Interventions

HR deficient cohortexperimental

Pre-identified presence of somatic or germline deleterious mutation, as determined by NGS only, in at least one gene critical to DNA repair through homologous recombination, including but not limited to: ARID1A, ATM, ATRX, MRE11A, NBN, PTEN, RAD50/51/51B, BARD1, BLM, BRCA1, BRCA2, BRIP1, FANCA/C/D2/E/F/G/L, PALB2, WRN, CHEK2, CHEK1, BAP1, FAM175A, SLX4, MLL2 or XRCC.

Drug: PembrolizumabDrug: OlaparibRadiation: Stereotactic Body Radiation Therapy
HR proficient cohortexperimental

No identifiable somatic or germline deleterious mutation in DNA Response and Repair pathway

Drug: PembrolizumabDrug: OlaparibRadiation: Stereotactic Body Radiation Therapy

Interventions

Pembrolizumabdrug

Pembrolizumab 200mg IV every 3 weeks starting C2D1

Olaparibdrug

Olaparib 200mg orally twice daily starting C1D1 concurrently with radiation. Starting C2D1, Olaparib 300mg orally twice with Pembrolizumab

Stereotactic Body Radiation Therapyradiation

Stereotactic Body Radiation Therapy Dose 25Gy in 5 fractions daily (M-F) for 5 days starting C1D1 with Olaparib