SPDL1 and mature T-cell and NK-cell non-Hodgkin lymphoma: Furthermore, higher sPD-L1 levels were correlated with male sex (OR = 1.80, 95%CI = 1.06–3.03, p = 0.029), International Prognostic Index (IPI) score ≥2 (OR = 4.32, 95%CI = 2.10–8.89, p < 0.001), elevated lactate dehydrogenase (LDH) level (OR = 5.15, 95%CI = 1.94–13.71, p = 0.001), presence of B symptoms (OR = 2.56, 95%CI = 1.45–4.52, p = 0.001), and ECOG PS ≥2 (OR = 7.41, 95%CI = 1.49–36.92, p = 0.015) in PTCL.