800+ advanced ovarian cancer patients enrolled in the phase III trial of the PARP-1 inhibitor Veliparib (VELIA)….Pairwise analysis of individual features with clinical outcomes shows that increased tumor-mutation burden (TMB)...were each significantly associated with longer PFS and less progressive disease (PD). Similarly, homologous recombination deficiency (HRD) and BRCA alteration were associated with better clinical outcomes, while high CA-125 was associated with worse outcomes.