ClinGen Dosage Sensitivity Curation Page


  • Curation Status: Complete

Location Information

Select assembly: (NC_000019.9) (NC_000019.10)
  • Haploinsufficiency score: Haploinsufficiency unlikely
  • Strength of Evidence (disclaimer): Haploinsufficiency unlikely
Evidence for haploinsufficiency phenotype
PubMed ID Description
32487729 Rausell et al. (2020) suggested that this gene is dosage sensitivity unlikely because it had at least one homozygous LoF variant present in >1% of the gnomAD population. Examples of homozygous likely LoF variants in this gene in gnomAD include p.Arg356Ter (280 homozygous individuals), p.Arg303Ter (1 homozygous individual), and p.Ala277CysfsTer71 (5 homozygous individuals).
28406212 Saleheen et al. (2017) identified one adult individual in a Pakistani population with a homozygous LoF variant in this gene. The individuals were originally recruited for a study evaluating risk of myocardial infarction. Individuals within that study found to have homozygous predicted LOF variants were phenotyped for ?more than 200 biochemical and disease traits?.
25807282 Sulem et al. (2015) identified 4 individuals in an Icelandic population with a homozygous LoF variant in this gene. This population was participating in a variety of disease projects and the researchers pulled this population to investigate how often homozygous LoF variants were found in this population.
26940866 Narasimhan et al. (2016) identified rare homozygous loss-of-function (rnLOF) variants in a British Pakistani population characterized as healthy, pregnant, or type 2 diabetic. The variants were compared with an Icelandic population and the ExAC database and a SIGLEC5 variant was found in the British Pakistani, Icelandic and ExAC populations.
32461654 Karczewski et al. (2020) identifies 443,769 high confidence loss of function variants in the Genome Aggregation Database (gnomAD) population including these likely LoF variants (p.Arg356Ter, p.Arg303Ter, and p.Ala277CysfsTer71). Several methods were used to identify these genes including manual curation and utilizing LOEUF scores.

Haploinsufficiency phenotype comments:

This gene was classified as dosage sensitivity unlikely on 2/2/2021 based on review of population data as described in the PMIDs above. These genes all have at least one curated homozygous loss of function variant in 1% or greater of the gnomAD population dataset and some have also been observed in additional population datasets. As of January 2021, there are no disease associations found in OMIM, and no reports suggesting a Mendelian disease association in the literature. The gnomAD pLI score is 0 and the LOEUF score is 0.98 predicting that this gene is tolerant of LoF variation.

  • Triplosensitivity score: 0
  • Strength of Evidence (disclaimer): No evidence for dosage pathogenicity