IGFBP3 and diffuse large B-cell lymphoma: Multivariate Cox regression analysis demonstrated that IGFBP3 tended to be an independent prognostic element for PFS (P = 0.055, HR: 0.503, 95% CI: 0.249–1.016) and LDH independently predicted the prognosis of ABC-DLBCL (P = 0.017, HR: 1.348, 95% CI: 0.145–0.831).