rs199692186
Variant summary
Our verdict is Likely benign. Variant got -1 ACMG points: 4P and 5B. PM1PM2BP4_StrongBP6
The NM_001365536.1(SCN9A):āc.3002A>Gā(p.Tyr1001Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000704 in 1,561,280 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. Y1001Y) has been classified as Likely benign.
Frequency
Consequence
NM_001365536.1 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -1 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
SCN9A | NM_001365536.1 | c.3002A>G | p.Tyr1001Cys | missense_variant | 17/27 | ENST00000642356.2 | |
SCN1A-AS1 | NR_110260.1 | n.870-4340T>C | intron_variant, non_coding_transcript_variant |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
SCN9A | ENST00000642356.2 | c.3002A>G | p.Tyr1001Cys | missense_variant | 17/27 | NM_001365536.1 | P1 | ||
SCN1A-AS1 | ENST00000651574.1 | n.1548-4340T>C | intron_variant, non_coding_transcript_variant |
Frequencies
GnomAD3 genomes AF: 0.000547 AC: 83AN: 151856Hom.: 0 Cov.: 31
GnomAD3 exomes AF: 0.000634 AC: 130AN: 205034Hom.: 0 AF XY: 0.000590 AC XY: 65AN XY: 110138
GnomAD4 exome AF: 0.000721 AC: 1016AN: 1409424Hom.: 0 Cov.: 31 AF XY: 0.000731 AC XY: 509AN XY: 696032
GnomAD4 genome AF: 0.000547 AC: 83AN: 151856Hom.: 0 Cov.: 31 AF XY: 0.000553 AC XY: 41AN XY: 74100
ClinVar
Submissions by phenotype
not provided Uncertain:7Benign:1
Uncertain significance, criteria provided, single submitter | clinical testing | Mayo Clinic Laboratories, Mayo Clinic | Oct 12, 2020 | - - |
Uncertain significance, no assertion criteria provided | clinical testing | Department of Pathology and Laboratory Medicine, Sinai Health System | - | The SCN9A p.Tyr990Cys variant was identified in 3 of 3192 proband chromosomes (frequency: 0.00094; one compound heterozygote and two heterozygotes) from individuals with peripheral neuropathy (Wadhawan_2017_PMID_29264398; Eijkenboom_2018_PMID_30554136). The variant was identified in dbSNP (ID: rs199692186) and ClinVar (classified as likely benign by PreventionGenetics, Invitae and Illumina, and as uncertain significance by GeneDx, EGL Genetic Diagnostics and Genetic Services Laboratory, University of Chicago, and classified as pathogenic by Bioinformatics Core Luxembourg Center for Systems Biomedicine). The variant was identified in control databases in 143 of 236408 chromosomes at a frequency of 0.0006049 increasing the likelihood this could be a low frequency benign variant (Genome Aggregation Database March 6, 2019, v2.1.1). The variant was observed in the following populations: Ashkenazi Jewish in 35 of 6532 chromosomes (freq: 0.005358), Other in 7 of 5826 chromosomes (freq: 0.001202), European (non-Finnish) in 92 of 113582 chromosomes (freq: 0.00081), European (Finnish) in 5 of 22294 chromosomes (freq: 0.000224), African in 3 of 23534 chromosomes (freq: 0.000128) and South Asian in 1 of 20024 chromosomes (freq: 0.00005), but was not observed in the Latino or East Asian populations. The p.Tyr990 residue is conserved in mammals and computational analyses (PolyPhen-2, SIFT, AlignGVGD, BLOSUM, MutationTaster) provide inconsistent predictions regarding the impact to the protein; this information is not very predictive of pathogenicity. The variant occurs outside of the splicing consensus sequence and in silico or computational prediction software programs (SpliceSiteFinder, MaxEntScan, NNSPLICE, GeneSplicer) do not predict a difference in splicing. In summary, based on the above information the clinical significance of this variant cannot be determined with certainty at this time. This variant is classified as a variant of uncertain significance. - |
Uncertain significance, criteria provided, single submitter | clinical testing | Genetic Services Laboratory, University of Chicago | Aug 27, 2013 | - - |
Uncertain significance, no assertion criteria provided | clinical testing | Clinical Genetics, Academic Medical Center | - | - - |
Uncertain significance, criteria provided, single submitter | clinical testing | Eurofins Ntd Llc (ga) | Nov 03, 2016 | - - |
Likely benign, criteria provided, single submitter | clinical testing | CeGaT Center for Human Genetics Tuebingen | Apr 01, 2024 | SCN9A: BP4 - |
Uncertain significance, no assertion criteria provided | clinical testing | Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+ | - | - - |
Uncertain significance, criteria provided, single submitter | clinical testing | GeneDx | Sep 19, 2018 | The Y990C variant has been reported previously in two individuals with Rolandic epilepsy; however, additional information was not provided (Bobbili et al., 2018). The Y990C variant is observed in 35/6312 (0.6%) alleles from individuals of Ashkenazi Jewish background in large population cohorts (Lek et al., 2016). The Y990C variant is a non-conservative amino acid substitution, which is likely to impact secondary protein structure as these residues differ in polarity, charge, size and/or other properties. In-silico analyses, including protein predictors and evolutionary conservation, support a deleterious effect. Therefore, based on the currently available information, it is unclear whether this variant is a pathogenic variant or a rare benign variant. - |
Childhood epilepsy with centrotemporal spikes Pathogenic:1
Pathogenic, no assertion criteria provided | case-control | Bioinformatics Core, Luxembourg Center for Systems Biomedicine | Jan 01, 2017 | CAADphred>15 - |
Channelopathy-associated congenital insensitivity to pain, autosomal recessive Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 12, 2018 | This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. - |
not specified Benign:1
Likely benign, criteria provided, single submitter | clinical testing | PreventionGenetics, part of Exact Sciences | - | - - |
Primary erythromelalgia Benign:1
Benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 12, 2018 | This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. - |
Inborn genetic diseases Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Ambry Genetics | Sep 29, 2019 | This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. - |
Generalized epilepsy with febrile seizures plus, type 7;C2752089:Neuropathy, hereditary sensory and autonomic, type 2A Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Invitae | Jan 27, 2024 | - - |
Small fiber neuropathy Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jun 14, 2016 | - - |
Paroxysmal extreme pain disorder Benign:1
Benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 12, 2018 | This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at