Furthermore, immunoperoxidase and double immunofluorescence in AAA tissue sections revealed FcγRIA and FcγRIIIA protein expression colocalizing with IgG, CD68+ macrophages, and α‐SMA+ VSMC‐stained areas (Figures 1C, Supplementary Figure S1B‐E). The gene discussed is FCGR3A; the disease is triple-A syndrome.