IGHE and Aicardi-Goutieres syndrome 5: We investigated the IgE levels against α‐Gal and beef (ImmunoCAP System, Thermo Fisher, Uppsala, Sweden) as well as total IgE in 50 well‐characterized Swedish patients with a doctor's diagnosis of AGS5 of whom 26 had anaphylaxis (ANA) and 24 non‐anaphylaxis (non‐ANA) (Table S1).