CYP2C19 and neoplasm: Qualitative surgical demographic variables, including the type of surgery, affected breast, tumor grade, tumor stage (T stage, N stage), and adjuvant/neoadjuvant treatment setting, showed no significant differences among the allele groups of CYP2C19, ALDH3A1, SLC22A16, and ABCB1 genes (p-value > 0.05) (Table 1).