A study by Eckhoff et al. [16] of 150 Danish early stage breast cancer patients, and thus similar allele frequencies to our population, found that GSTP1 rs1138272 variant carriers had increased risk of chemotherapy-induced peripheral neuropathy during docetaxel treatment, also when examining neuropathies graded ≥ 2 [5]. This evidence concerns the gene GSTP1 and breast cancer.