Progression-free survival comparing PARPi versus placebo in subgroups: forest plots of individual patient data from four RCTs. (A) Germline and/or tumor BRCA mutated. (B) HRD positive including BRCA mutated. (C) HRD positive excluding BRCA mutated. (D) HRD negative.CI, confidence interval; HRD, homologous recombination deficiency; M–H, Mantel–Haenszel; PARPi, poly(ADP-ribose) polymerase inhibitor; RCT, randomized controlled trial.