Statistical analyses included Wilcoxon tests, Fisher's exact tests, Spearman's correlation, and Benjamini-Hochberg procedure for multiple comparisons (p < 0.05 significant).<h4>Results</h4>Serum cytokines showed lower IFN-γ levels in cardiac events and associations of TNF-α, IL-8, and IL-10 with cytomegalovirus (CMV), BK polyomavirus (BKPyV) viremia and anaemia. The gene discussed is IFNG; the disease is anemia (phenotype).