Total submissions: 3
Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
---|---|---|---|---|---|---|---|---|
Broad Center for Mendelian Genomics, |
RCV001762038 | SCV001999894 | uncertain significance | Hyperinsulinemic hypoglycemia, familial, 4 | 2021-11-02 | criteria provided, single submitter | curation | The p.Asp57Glu variant in HADH has been reported in 2 individuals with familial hyperinsulinemic hypoglycemia (PMID: 32876354, 16725361) and has been identified in in 0.002% (2/113718) of European (non-Finnish) chromosomes by the Genome Aggregation Database (gnomAD, http://gnomad.broadinstitute.org; dbSNP ID: rs137853102). Although this variant has been seen in the general population in a heterozygous state, its frequency is low enough to be consistent with a recessive carrier frequency. This variant has also been reported in ClinVar (Variation ID#: 8019) and has been interpreted as pathogenic by OMIM. In vitro functional studies provide some evidence that the p.Asp57Glu variant may slightly impact protein function (PMID: 16725361). However, these types of assays may not accurately represent biological function. Computational prediction tools and conservation analyses suggest that this variant may impact the protein, though this information is not predictive enough to determine pathogenicity. The p.Asp57Glu variant is located in a region of HADH that is essential to protein folding and stability, suggesting that this variant is in a functional domain and slightly supports pathogenicity (PMID: 16725361). In summary, while there is some suspicion for a pathogenic role, the clinical significance of this variant is uncertain. ACMG/AMP Criteria applied: PM2_supporting, PP3, PM1_supporting, PS3_supporting (Richards 2015). |
Clinical Genomics, |
RCV003221347 | SCV003915691 | uncertain risk allele | Hyperinsulinemic hypoglycemia | criteria provided, single submitter | research | Potent mutations in HADH gene are associated with congenital hyperinsulinism, which leads to recurrent hypoglycemia. The condition is exacerbated by stress, fasting or excessive dietary protein. May respond well to diazoxide. However, the role of this particular variant rs137853102 in congenital hyperinsulinism is yet to be ascertained. | |
OMIM | RCV000008483 | SCV000028691 | pathogenic | Deficiency of 3-hydroxyacyl-CoA dehydrogenase | 2015-08-18 | no assertion criteria provided | literature only |