ClinVar Miner

Submissions for variant NM_006642.5(SDCCAG8):c.1420del (p.Glu474fs)

dbSNP: rs397515335
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Total submissions: 6
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
GeneDx RCV000256021 SCV000322171 pathogenic not provided 2019-06-24 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; This variant is associated with the following publications: (PMID: 22190896, 21866095, 20835237, 31844813)
Genomic Research Center, Shahid Beheshti University of Medical Sciences RCV000625956 SCV000746554 pathogenic Bardet-Biedl syndrome 2017-12-03 criteria provided, single submitter clinical testing
Labcorp Genetics (formerly Invitae), Labcorp RCV001056393 SCV001220834 pathogenic Senior-Loken syndrome 7; Bardet-Biedl syndrome 16 2023-01-12 criteria provided, single submitter clinical testing This premature translational stop signal has been observed in individual(s) with Senior-Loken syndrome (PMID: 20835237). For these reasons, this variant has been classified as Pathogenic. ClinVar contains an entry for this variant (Variation ID: 57). This variant is present in population databases (rs770467138, gnomAD 0.02%). This sequence change creates a premature translational stop signal (p.Glu474Serfs*20) in the SDCCAG8 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in SDCCAG8 are known to be pathogenic (PMID: 20835237, 22190896).
Fulgent Genetics, Fulgent Genetics RCV001056393 SCV002811456 likely pathogenic Senior-Loken syndrome 7; Bardet-Biedl syndrome 16 2021-12-04 criteria provided, single submitter clinical testing
Women's Health and Genetics/Laboratory Corporation of America, LabCorp RCV000625956 SCV003922995 pathogenic Bardet-Biedl syndrome 2023-03-03 criteria provided, single submitter clinical testing Variant summary: SDCCAG8 c.1420delG (p.Glu474SerfsX20) 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. The variant allele was found at a frequency of 1.6e-05 in 251312 control chromosomes (gnomAD). c.1420delG has been reported in the literature in multiple individuals affected with nephronophthisis and retinal degeneration (Senior-Loken syndrome), including at least three homozygous individuals from two unrelated families (e.g. Otto_2010, Halbritter_2013, Al Alawi_2019). These data indicate that the variant is very likely to be associated with disease. Four submitters have provided clinical-significance assessments for this variant to ClinVar after 2014 and all classified the variant as pathogenic (n=3)/likely pathogenic (n=1). Based on the evidence outlined above, the variant was classified as pathogenic.
OMIM RCV000000074 SCV000020217 pathogenic Senior-Loken syndrome 7 2010-10-01 no assertion criteria provided literature only

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