The phase III study randomized patients in a 2:1 ratio across 2 independent cohorts. In the first cohort, 201 patients with germline BRCA mutations received niraparib at 300 mg daily (n = 138) or placebo (n = 65). In the second cohort, 345 patients with non-germline BRCA-mutant tumors received the PARP Inhibitor (n = 231) or placebo (n = 114). Patients in this group were tested for homologous recombination deficiency (HRD), and could be either positive (n = 162) or negative (n = 134). Of those who tested positive, 47 had somatic BRCA mutations and 115 were wild-type.
Patient demographics were well balanced between the arms for each cohort. In the germline BRCA group, the median age was 57 years and 65.9% had an ECOG performance status (PS) of 0. In the placebo group, the median age was 58 years and 73.8% of patients had an ECOG PS of 0. Overall, 48.6% and 53.8% ...
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