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. 2021 Aug 7;9(2):347–364. doi: 10.1007/s40487-021-00167-z

Fig. 1.

Fig. 1

Mechanism of action of PARP inhibitors. In the presence of base excision repair and homologous recombination deficiency, double-strand break accumulation occurs which eventually leads to cell death. BER base excision repair, HRD homologous recombination deficiency, SSB single-strand break, DSB double-strand break