To evaluate the frequency of bone marrow suppression Adverse Drug Reactions (ADRs) in patients with BRCA mutated HER2 negative high recurrent risk breast cancer treated with LYNPARZA for adjuvant treatment in the actual post-marketing use.~This investigation will be conducted for application for re-examination specified in Article 14-4 of the Pharmaceutical Affairs Law.
To evaluate the frequency of bone marrow suppression Adverse Drug Reactions (ADRs) in patients with BRCA mutated HER2 negative high recurrent risk breast cancer treated with LYNPARZA for adjuvant treatment in the actual post-marketing use.