PCN491 PATIENT REPORTED OUTCOMES (PRO) OF TALAZOPARIB (TALA) VERSUS PHYSICIAN'S CHOICE OF CHEMOTHERAPY (PCT) IN PATIENTS (PTS) WITH ADVANCED BREAST CANCER (ABC) AND A GERMLINE BRCA (GBRCA) MUTATION: A FOCUS ON EMBRACA PTS WITH/ WITHOUT PRIOR CHEMOTHERAPY (CT) SUBGROUPS