In the Icelandic data, the urticaria-associated variant rs6703348[G] at FCER1A is highly correlated with two top eQTLs for RNA levels of FCER1A in blood and in monocytes (r2 = 0.98 and 0.82, respectively) (Supplementary Data 15-16). The gene discussed is FCER1A; the disease is urticaria.