Department of Tumor Growth Biology;
N.N.Petrov Institute of Oncology;
Saint-Petersburg 197758;
Russia;
Department of Medical Genetics;
St.-Petersburg Pediatric Medical University;
Saint-Petersburg 194100;
Russia;
Department of Oncology;
I.I.Mechnikov North-Western Medical University;
Saint-Petersburg 191015;
Russia;
BRCA1/2 mutations; Platinum-based therapy; Poly(ADP-ribose)polymerase inhibitors; Drug resistance; Secondary mutations; Intratumoral heterogeneity; Neoadjuvant therapy;