As PARPi and METi cooperation in triple negative breast cancer cells has been previously described and reported as dependent on both proteins’ localization within cell nuclei [22] where the two proteins might interact, leading to PARP1 phosphorylation, we assessed PARP1 and MET localization in the above-listed MET overexpressing cell lines. This evidence concerns the gene PARP1 and triple-negative breast carcinoma.