No difference was observed in the genotype distribution of the IKZF1 rs4132601 polymorphism between DLBCL patients and controls, but the 2-year PFS rate of patients with the IKZF1 TT genotype was 54% compared to 69% in those with the IKZF1 G+ genotypes. The gene discussed is IKZF1; the disease is diffuse large B-cell lymphoma.