OS (A) of all patients who initiated protocol therapy and (B) after excluding patients who crossed over to gemcitabine/berzosertib, (C) of all patients with a PFI of 3 months or less who initiated protocol therapy and (D) after excluding patients who crossed over to gemcitabine/berzosertib, and (E) of all patients with a PFI of more than 3 months to <6 months who initiated protocol therapy and (F) after excluding patients who crossed over to gemcitabine/berzosertib. HR, hazard ratio; OS, overall survival; PFI, platinum-free interval.