ClinVar Miner

Submissions for variant NM_000335.5(SCN5A):c.4434+4C>T

dbSNP: rs368541703
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV003656339 SCV001222419 uncertain significance not provided 2023-08-24 criteria provided, single submitter clinical testing This sequence change falls in intron 25 of the SCN5A gene. It does not directly change the encoded amino acid sequence of the SCN5A protein. It affects a nucleotide within the consensus splice site. The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with SCN5A-related conditions. ClinVar contains an entry for this variant (Variation ID: 853142). Variants that disrupt the consensus splice site are a relatively common cause of aberrant splicing (PMID: 17576681, 9536098). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant is not likely to affect RNA splicing. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.
Color Diagnostics, LLC DBA Color Health RCV001842604 SCV001354596 uncertain significance Cardiac arrhythmia 2023-12-04 criteria provided, single submitter clinical testing This variant causes a C to T nucleotide substitution at the +4 position of intron 25 of the SCN5A gene. To our knowledge, RNA studies have not been reported for this variant. This variant has been reported in an individual affected with hypertrophic cardiomyopathy (PMID: 25351510). This variant has been identified in 6/240560 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance.
Ambry Genetics RCV002327327 SCV002628361 uncertain significance Cardiovascular phenotype 2021-04-15 criteria provided, single submitter clinical testing The c.4437+4C>T intronic variant results from a C to T substitution 4 nucleotides after coding exon 24 in the SCN5A gene. This alteration has been reported in a hypertrophic cardiomyopathy (HCM) cohort; however, clinical details were limited (Lopes LR et al. Heart, 2015 Feb;101:294-301). This nucleotide position is not well conserved in available vertebrate species. In silico splice site analysis for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear.

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