For ABCB1 polymorphisms, the 1236 CC genotype was associated with a decreased risk for NHL (OR = 0.74, p = 0.04) and DLBCL (OR = 0.64, p = 0.02), whereas the 3435 CT genotype was associated with an increased risk for NHL (OR = 1.50, p < 0.0001), DLBCL (OR = 1.52, p = 0.01), and T-cell lymphoma (OR = 1.51, p = 0.03). The gene discussed is ABCB1; the disease is T-cell non-Hodgkin lymphoma.