CD5 and systemic lupus erythematosus: Nevertheless, when compared the minor allele frequencies of both analyzed CD5 polymorphisms between SLE patients with presence of nephritis and controls statistically significant results were detected for both studied polymorphisms: rs2229177 p = 0.03 OR = 1.30 95% CI(1.01–1.67); rs2241002 p = 0.02 OR = 0.68 95% CI (0.48–0.96).