ClinVar Miner

Submissions for variant NM_000352.6(ABCC8):c.2151C>A (p.Cys717Ter)

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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Broad Center for Mendelian Genomics, Broad Institute of MIT and Harvard RCV003322271 SCV004026545 pathogenic Hyperinsulinemic hypoglycemia, familial, 1 2023-08-16 criteria provided, single submitter curation The p.Cys717Ter variant in ABCC8 has been reported in at least 1 individual, in the compound heterozygous state, with hyperinsulinemic hypoglycemia (PMID: 14692646, 14715863), and has been identified in 0.003% (1/34434) of Latino/Admixed American chromosomes by the Genome Aggregation Database (gnomAD, http://gnomad.broadinstitute.org; dbSNP ID: rs776027296). 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 nonsense variant leads to a premature termination codon at position 717, which is predicted to lead to a truncated or absent protein. Loss of function of the ABCC8 gene is an established disease mechanism in autosomal recessive hyperinsulinemic hypoglycemia. In summary, this variant meets criteria to be classified as pathogenic for autosomal recessive hyperinsulinemic hypoglycemia. ACMG/AMP Criteria applied: PM2_supporting, PM3, PVS1 (Richards 2015).

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