ClinVar Miner

Submissions for variant NM_000543.5(SMPD1):c.354del (p.Ile119fs)

dbSNP: rs727504165
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Total submissions: 6
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Eurofins Ntd Llc (ga) RCV000175624 SCV000227148 pathogenic not provided 2014-10-13 criteria provided, single submitter clinical testing
Counsyl RCV000410051 SCV000485463 likely pathogenic Niemann-Pick disease, type A 2015-12-18 criteria provided, single submitter clinical testing
Women's Health and Genetics/Laboratory Corporation of America, LabCorp RCV000410051 SCV001363219 likely pathogenic Niemann-Pick disease, type A 2022-03-09 criteria provided, single submitter clinical testing Variant summary: SMPD1 c.354delC (p.Ile119SerfsX7) results in a premature termination codon, predicted to cause a truncation of the encoded protein or absence of the protein due to nonsense mediated decay, which are commonly known mechanisms for disease. Truncations downstream of this position have been classified as pathogenic by our laboratory. The variant was absent in 250864 control chromosomes (gnomAD). c.354delC has been reported in the literature in the setting of NGS based carrier screening, without providing further information (Abuli_2016). This report does not provide unequivocal conclusions about association of the variant with Niemann-Pick Disease Type A. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Three ClinVar submitters have assessed the variant since 2014: two have classified the variant as likely pathogenic, and one as pathogenic. Based on the evidence outlined above, the variant was classified as likely pathogenic.
Invitae RCV001207366 SCV001378712 pathogenic Niemann-Pick disease, type B; Niemann-Pick disease, type A 2023-06-11 criteria provided, single submitter clinical testing For these reasons, this variant has been classified as Pathogenic. ClinVar contains an entry for this variant (Variation ID: 167708). This variant has not been reported in the literature in individuals affected with SMPD1-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change creates a premature translational stop signal (p.Ile119Serfs*7) in the SMPD1 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in SMPD1 are known to be pathogenic (PMID: 12369017, 15221801).
GeneDx RCV000175624 SCV001783989 likely pathogenic not provided 2022-07-13 criteria provided, single submitter clinical testing Frameshift variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss-of-function is a known mechanism of disease; Not observed in large population cohorts (gnomAD); Has not been previously published as pathogenic or benign to our knowledge; This variant is associated with the following publications: (PMID: 26990548)
Baylor Genetics RCV000410051 SCV004203234 pathogenic Niemann-Pick disease, type A 2023-06-11 criteria provided, single submitter clinical testing

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