Two studies focused on glutathione S-transferase genes: Aplenc et al. [32] assessed variants in GSTM1, GSTP1, and GSTT1 in 18 successfully genotyped adult patients receiving ozogamycin-gemtuzumab treatment for relapsed acute myeloid leukemia after HSCT. The gene discussed is GSTP1; the disease is acute myeloid leukemia.