No effect was detected for presenting haemoglobin concentration (P = 0.402), platelet count (P = 0.572), LDH activity (P = 0.866), eGFR (P = 0.584), or HIV infection status on the number of PEX sessions required to induce remission; among PLWH no effect was observed for presenting CD4 count (P = 0.920) or HIV viral load (P = 0.800) on this parameter. The gene discussed is CD4; the disease is HIV infectious disease.