Expression levels showed logFC values of 2.25 (P = 1.58e-05) for C3, 2.17 (P = 2.69e-06) for C4A and 2.135 (P = 3.7e-06) for C4B in APS vs controls, without differences between APS and SLE. The gene discussed is C4A; the disease is autoimmune polyendocrinopathy.