Aliases: FH, FHC, FHCL1, LDLCQ2
Chromosome No: 19
Chromosome Band: 19p13.2
Genetic Category: Rare single gene variant
ASD Reports: 1
Recent Reports: 0
Annotated variants: 3
Associated CNVs: 5
Evidence score: 2
Relevance to Autism
Integration of familial whole-exome datasets of 3,531 individuals from 1,704 simplex ASD families and 50 multiplex ASD families and expression data from the BrainSpan Atlas of the Developmental Human Brain in Luo et al., 2020 identified a neurodevelopmentally co-regulated, sex-differentially expressed cluster of exons enriched with ASD-segregating deleterious variants in the LDLR gene (Bonferroni-corrected cluster P-value of 1.68-05).
The low density lipoprotein receptor (LDLR) gene family consists of cell surface proteins involved in receptor-mediated endocytosis of specific ligands. Low density lipoprotein (LDL) is normally bound at the cell membrane and taken into the cell ending up in lysosomes where the protein is degraded and the cholesterol is made available for repression of microsomal enzyme 3-hydroxy-3-methylglutaryl coenzyme A (HMG CoA) reductase, the rate-limiting step in cholesterol synthesis. At the same time, a reciprocal stimulation of cholesterol ester synthesis takes place. Mutations in this gene cause the autosomal dominant disorder, familial hypercholesterolemia.