CD8A and diabetes mellitus: We did not obtain any statistically significant correlation between the anti-SARS-CoV-2 antibody titers, levels of T helpers (CD4+), cytotoxic T cells (CD8+) of maintenance dialysis patients and dialysis dose (spKt/V), hemoglobin, albumin, C-reactive protein, calcium, phosphorus, parathormone blood level, CKD etiology, separately with diabetes, malignancy.