RDH5, RDH8, RDH10, RDH11, RDH12, RDH13, RDH14 and SDR16C5, which we introduced as breast cancer survival biomarkers, are located in 12q13.2, 19p13.2, 8q21.11, 14q24.1, 14q24.1, 19q13.42, 2p24.2 and 8q12.1 genomic regions, respectively. The gene discussed is RDH8; the disease is breast cancer.