Plasma IL6 levels in Apoe−/− mice, Apoe−/−Fcer1a−/− mice, and those that received CD4+ and CD8+ T cells from Apoe−/− mice and Apoe−/−Fcer1a−/− mice (Fig 7B and C), changed concordantly with AAA lesion sizes (Fig 3C and Supplementary Fig S9C). This evidence concerns the gene APOE and triple-A syndrome.