Gene: COL18A1

Alternate names for this Gene: GLCC|KNO|KNO1|KS

Gene Summary: This gene encodes the alpha chain of type XVIII collagen. This collagen is one of the multiplexins, extracellular matrix proteins that contain multiple triple-helix domains (collagenous domains) interrupted by non-collagenous domains. A long isoform of the protein has an N-terminal domain that is homologous to the extracellular part of frizzled receptors. Proteolytic processing at several endogenous cleavage sites in the C-terminal domain results in production of endostatin, a potent antiangiogenic protein that is able to inhibit angiogenesis and tumor growth. Mutations in this gene are associated with Knobloch syndrome. The main features of this syndrome involve retinal abnormalities, so type XVIII collagen may play an important role in retinal structure and in neural tube closure. Alternative splicing results in multiple transcript variants.

Gene is located in Chromosome: 21

Location in Chromosome : 21q22.3

Description of this Gene: collagen type XVIII alpha 1 chain

Type of Gene: protein-coding

rs79985863 in COL18A1 gene and Alzheimer's Disease PMID 26830138 2016 Family-based association analyses of imputed genotypes reveal genome-wide significant association of Alzheimer's disease with OSBPL6, PTPRG, and PDCL3.

rs11702494 in COL18A1 gene and Blood Protein Measurement PMID 30072576 2018 Co-regulatory networks of human serum proteins link genetics to disease.

PMID 29875488 2018 Genomic atlas of the human plasma proteome.

rs10854470 in COL18A1 gene and Leukemia, Myelocytic, Acute PMID 27903959 2017 Genome-wide haplotype association study identify the FGFR2 gene as a risk gene for acute myeloid leukemia.

rs114139997 in COL18A1 gene and Triglycerides measurement PMID 30275531 2018 Genetics of blood lipids among ~300,000 multi-ethnic participants of the Million Veteran Program.

PMID 24507774 2014 Although we did not identify new genes associated with LDL-C, we did identify four low-frequency (frequencies between 0.1% and 2%) variants (ANGPTL8 rs145464906 [c.361C>T; p.Gln121*], PAFAH1B2 rs186808413 [c.482C>T; p.Ser161Leu], COL18A1 rs114139997 [c.331G>A; p.Gly111Arg], and PCSK7 rs142953140 [c.1511G>A; p.Arg504His]) with large effects on HDL-C and/or triglycerides.