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

Table 1.

Inhibitory activity of niraparib on individual PARP isoforms [7]

IC50 (nM)
PARP1 3.8
PARP2 2.1
PARP3 1300
V-PARP 330

IC50 half-maximal inhibitory concentration