Lynparza met the primary endpoint of significantly increasing the time prostate cancer patients selected for BRCA1/2 or ATM mutations live without radiographic disease progression.

AstraZeneca and MSD Inc., Kenilworth, N.J., announced positive results from the Phase III PROfound trial of Lynparza (olaparib) in men with metastatic castration-resistant prostate cancer (mCRPC) who have a homologous recombination repair gene mutation (HRRm) and have progressed on prior treatment with new hormonal anticancer treatments (e.g. enzalutamide and abiraterone).

Results from the trial showed a statistically-significant and clinically-meaningful improvement in the primary endpoint of radiographic progression-free survival (rPFS) with Lynparza vs. enzalutamide or abiraterone in men with mCRPC selected for BRCA1/2 or ATM gene mutations, a subpopulation of HRR gene mutations. The safety and tolerability profile of Lynparza was generally consistent with previous trials.

AstraZeneca and MSD plan to present the full data from the trial at a forthcoming medical meeting. The companies are also exploring additional trials in prostate cancer, including the ongoing Phase III PROpel trial, testing Lynparza as a 1st-line therapy in mCRPC, in combination with abiraterone.

About Profound : PROfound is a prospective, multicentre, randomised, open-label, Phase III trial testing the efficacy and safety of Lynparza versus enzalutamide or abiraterone in patients with mCRPC who have progressed on prior treatment with new hormonal anticancer treatments and have a qualifying tumour mutation in one of 15 genes involved in the HRR pathway, including among them BRCA1/2, ATM and CDK12.