Niraprib Maintenance Prolongs PFS in Newly Diagnosed Advanced Ovarian Cancer After Response to Chemotherapy
Maintenance therapy with niraparib (Zejula) significantly improved progression-free survival (PFS) compared with placebo in Chinese patients with newly diagnosed advanced ovarian cancer who achieved a complete response (CR) or partial response (PR) to first-line chemotherapy, according to data from the phase 3 PRIME trial (NCT03709316).1
Among patients who achieved a CR to frontline chemotherapy, those treated with niraparib (n = 212) achieved a median PFS of 29.4 months (95% CI, 19.3–not estimable [NE]) compared with 8.3 months (95% CI, 7.3-12.0) with placebo (n = 103; HR, 0.45; 95% CI, 0.32-0.61; P < .001). In the subgroup of patients who experienced a partial response to chemotherapy, those who were treated with maintenance niraparib (n = 43) had a median PFS of 19.3 months (95% CI, 11.1-NE), vs 8.3 months (95% CI, 5.6-11.1) with placebo (n = 26; HR, 0.45; 95% CI, 0.23-0.86; P = .014).
Notably, those who were treated with niraparib and achieved a CR to first-line chemotherapy experienced a numerically longer PFS than those who experienced a PR (HR, 0.67; 95% CI, 0.43-1.05).
