Chemical structures of A, veliparib, B,
olaparib, C, talazoparib. D, IC50 values for
veliparib, olaparib, and talazoparib compiled for 8 breast cancer cell lines.
Average values for triplicate wells and replicate assays were used. Error bars
refer to standard error of the mean of replicate assays. Light grey bars refer
to BRCA-mutant cell lines, while dark grey bars refer to BRCA wild-type cell
lines. Grey arrows refer to plasma concentrations of the PARP inhibitors
achieved in patients. N/A refers to not available.