Five other members belonging to the family of homologous recombination repair genes were upregulated by PAC in triple-negative breast-cancer cells (RAD54L, XRCC3, RAD51D, FEN1, and TOP3A) but only RAD54L is common in both types of cell lines (MCF-7 and MDA-MB-231). This evidence concerns the gene XRCC3 and triple-negative breast carcinoma.