Liver Involvement in Patients with Rare Variants and Intellectual Disability: A Case Report and Literature Review
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The membrane-bound O-acyltransferase domain-containing 7 (MBOAT7) protein is an acyltransferase catalyzing arachidonic acid incorporation into lysophosphatidylinositol. Patients with rare, biallelic loss-of-function variants of the gene display intellectual disability with neurodevelopmental defects. The rs641738 inherited variant associated with reduced hepatic MBOAT7 expression has been linked to steatotic liver disease susceptibility. However, the impact of biallelic loss-of-function variants on liver disease is not known. We report on a 2-year-old girl with -related intellectual disability and steatotic liver disease, confirming that loss-of-function predisposes to liver disease.
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