Expanding the phenotype of the recurrent truncating eIF2γ pathogenic variant p.(Ile465Serfs*4) identified in two brothers with MEHMO syndrome

We describe two brothers with a recurrent truncating EIF2S3 variant and MEHMO (Mental retardation, Epileptic seizures, Hypogonadism and -genitalism, Microcephaly, Obesity). Both had the previously described facial dysmorphic features, microcephaly, developmental impairment, hypoglycemia, hypothyreosis, diabetes mellitus, epilepsy, hypertonus, obesity, and micropenis. Additionally, we describe hypothermia and reduced umbilical blood flow.

Automated summary

This article describes two brothers with a recurrent truncating EIF2S3 variant and MEHMO syndrome. In addition to previously described symptoms, hypothermia and reduced umbilical blood flow were observed.