Clinical characteristics of a pediatric patient with heterozygous familial hypobetalipoproteinemia due to a novel APOB variant

Familial hypobetalipoproteinemia (FHBL) is an autosomal codominant disorder usually caused by variants in the APOB gene that frequently interfere with protein length. Clinical manifestations include malabsorption, nonalcoholic fatty liver disease, low levels of lipid-soluble vitamins, and neurological, endocrine, and hematological dysfunction. We present clinical data of a pediatric patient with heterozygous familial hypobetalipoproteinemia due to a novel APOB variant.