Expanding the phenotype of the truncating eIF2 pathogenic variant p.(Ile465Serfs*4) identified in two brothers with MEHMO syndrom

We describe two brothers with a truncating variant in EIF2S3 and expand the phenotypic description of MEHMO. Our cases had the previously described facial dysmorphic features, severe microcephaly, hypoglycaemia, hypothyreosis, epilepsy, hypertonus, obesity, micropenis and death due to multiorgan failure. Additionally, we describe hypothermia and reduced umbilical blood flow.