In univariate analysis (Table 3), the XIAP status was associated with pCR, as were other variables including the tumor grade and the molecular subtypes with higher pCR rate for GGI high versus low (OR = 2.10, 95%CI 1.70–2.80; p = 7.65 × 10−7), for HER2+ versus HR+/HER2− (OR = 3.80, 95%CI 2.70–5.40; p = 1.12 × 10−10) and for TN versus HR+/HER2− (OR = 3.60, 95%CI 2.80–4.70; p = 2.22 × 10−15). This evidence concerns the gene XIAP and neoplasm.