EIF2S1 and Wolcott-Rallison syndrome: Wolcott-Rallison syndrome (WRS) is a rare autosomal recessive disorder caused by loss-of-function mutations in the eukaryotic translation initiation factor 2α kinase 3 (EIF2AK3) gene encoding pancreatic PKR-like endoplasmic reticulum kinase (PERK) that phosphorylates the alpha subunit of the eukaryotic translation-initiation factor 2 (eIF2-alpha) [1].