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Clinical Trial Summary

This study will examine the combination of pembrolizumab and olaparib in three populations. - Cohort 1: aBC patients with a germline mutation in BRCA1 or BRCA2, - cohort 2: aBC patients with a germline mutation in one of the moderate penetrance homologous repair genes (ATM, BARD1, CHEK2, FANCC, PALB2, RAD51C, RAD51D, SLX4, XRCC2), and - cohort 3: aBC patients with a HRD as assessed by whole genome sequencing.


Clinical Trial Description

This is a multicenter, prospective, phase II, one-arm, three-cohort, open-label study of pembrolizumab in combination with olaparib in patients with advanced HER2 negative breast cancer who have either - a deleterious germline mutation in BRCA1/2 irrespective of tumor HRD status (Cohort 1), - or a deleterious germline mutation in ATM, BARD1, CHEK2, FANCC, PALB2, RAD51C, RAD51D, SLX4, XRCC2 irrespective of tumor HRD status (Cohort 2), - or a centrally confirmed high tumor HRD status, but no deleterious germline mutation in BRCA1/2, ATM, BARD1, CHEK2, FANCC, PALB2, RAD51C, RAD51D, SLX4, XRCC2 (Cohort 3). HRD assessment needs to be performed on a tumor biopsy not more than 12 months before study entry. All eligible participants according to the definition of cohorts 1-3 will receive pembrolizumab i.v. 200 mg q3w in combination with olaparib tablets 300 mg twice daily (total dose 600 mg per day). Study medication will be withdrawn/ended in case of onset of unacceptable toxicities, progression, withdrawal of consent, death, or end of study, whichever occurs first. Safety follow-up is planned for 90 days after the last application of study medication. Participants will be followed for survival for a maximum of 18 months after therapy start. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05033756
Study type Interventional
Source Institut fuer Frauengesundheit
Contact COMPRENDO Study manager
Phone +49 9131 927
Email [email protected]
Status Not yet recruiting
Phase Phase 2
Start date September 2021
Completion date October 2025

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