ClinVar Miner

Submissions for variant NM_000352.6(ABCC8):c.3995C>A (p.Ser1332Ter)

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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 RCV003322260 SCV004026517 likely pathogenic Hyperinsulinemic hypoglycemia, familial, 1 2023-08-16 criteria provided, single submitter curation The p.Ser1332Ter variant in ABCC8 has been reported in 1 individual with hyperinsulinemic hypoglycemia (PMID: 32027066), and has been identified in 0.003% (1/30616) of South Asian chromosomes by the Genome Aggregation Database (gnomAD, http://gnomad.broadinstitute.org; dbSNP ID: rs552324811). 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 1332, 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, although additional studies are required to fully establish its clinical significance, this variant is likely pathogenic for autosomal recessive hyperinsulinemic hypoglycemia. ACMG/AMP Criteria applied: PM2, PVS1 (Richards 2015).

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