By DMETTM platform, Uchiyama T et al. identified one SNP in CYP39A1 gene (rs7761731) significantly associated with grade 4 neutropenia in Japanese patients with gynecological cancers that may be a useful biomarker for predicting the risk of docetaxel-induced neutropenia [63]. The gene discussed is CYP39A1; the disease is Decreased total neutrophil count.