We confirmed that SLFN11 transcript and protein expression correlate, by linear regression (p = 0.01; Supplemental Fig 2C). As expected, we established that SLFN11 expression is a determinant of talazoparib sensitivity where a correlative trend by linear regression between SLFN11 protein expression and talazoparib sensitivity was observed, even in this small sample (p = 0.06; Fig 2B).