[17,18] In a meta-analysis of 12 studies reporting the incidence of adverse events for patients with breast cancer, the presence of G allele for GSTP1 c.313 A>G was associated with increased toxicity (OR 1.35, 95% Confidence interval 1.07 to 1.71, p = 0.011), including either hematological, gastrointestinal, neurological or non specified reports. This evidence concerns the gene GSTP1 and breast carcinoma.