ClinVar Miner

Submissions for variant NM_001378454.1(ALMS1):c.11660T>C (p.Ile3887Thr) (rs45630562)

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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Laboratory for Molecular Medicine, Partners HealthCare Personalized Medicine RCV000600976 SCV000713823 uncertain significance not specified 2018-01-17 criteria provided, single submitter clinical testing The p.Ile3888Thr variant in ALMS1 has been reported in 3 individuals with Alstro m syndrome, two of whom carried a pathogenic variant on the other allele. Howeve r, the third individual carried a truncating variant on the same copy (in cis) a s the p.Ile3888Thr variant, and had another pathogenic variant on the other copy of the gene (Marshall 2007). This variant has also been identified in 5/111172 European chromosomes by the Genome Aggregation Database (gnomAD, http://gnomad.b roadinstitute.org; dbSNP rs45630562); though this frequency is not high enough t o rule out a pathogenic role. Furthermore, isoleucine (Ile) at position 3888 is not conserved in mammals or evolutionarily distant species and 1 mammal (Gibbon) carries a threonine (Thr) at this position, raising the possibility that this c hange may be tolerated. Additional computational prediction tools support that t he variant may not impact the protein, though this information is not predictive enough to rule out pathogenicity. In summary, the clinical significance of the p.Ile3888Thr variant is uncertain. ACMG/AMP criteria applied: PM3_Strong, PM2, PP1, BP2, BP4.

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