RecruitingPhase 2Drug trialNeoadjuvant Camrelizumab and Fluzoparib and Nab-paclitaxel in Early Breast Cancer With HRR Gene MutationThis study is to evaluate the efficacy and safety of combination of Camrelizumab (Immunotherapy, PD-1 inhibitor), Fluzoparib (PARP inhibitor) and Nab-paclitaxel in neoadjuvant therapy of Her-2 negative breast cancer patients with HRR gene mutation.