Furthermore, HAMD‐17 score was found to be negatively associated with C4 levels (r = −0.162; p = .039) and positively associated with levels of ALP (r = 0.197; p = .12), GGT (r = 0.355; p < .001), TB (r = 0.203; p = .010), IgG (r = 0.182; p = .020), and IgM (r = 0.314; p < .001) (Figure 1a–i). The gene discussed is CD40LG; the disease is tuberculosis.