6. Multivariate Cox analyses for DFS in PBCT group.

Variables	HR (95% CI)	P
DFS, disease-free survival; PBCT, platinum-based chemotherapy; gBRCA, germline BRCA1/2; HR, hazard ratio; 95% CI, 95% confidence interval.
Age of onset (≤50 vs. >50) (year)	0.576 (0.233−1.420)	0.230
DFS (≤24 vs. >24) (month)	0.391 (0.096−1.596)	0.191
Tumor grade (III vs. II)	1.740 (0.545−5.557)	0.350
Visceral metastasis (visceral vs. non-visceral)	0.823 (0.368−1.839)	0.635
gBRCA mutation (with vs. without)	0.113 (0.023−0.566)	0.008