TNF and diffuse large B-cell lymphoma: Our study among the Jordanian Arab population showed a positive association and an increased risk of DLBCL associated with TNF rs1800629G>A in the co-dominant, dominant, and recessive models [odds ratio 2.18, 2.19, and 2.16, respectively; 95% confidence interval (CI) 1.11–4.31, 1.14–4.22, and 1.10–4.25, respectively; p value = 0.047, 0.014, and 0.016, respectively].