NM_006922.4:c.3250G>A
Variant summary
Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BA1BP4
This summary comes from the ClinGen Evidence Repository: The c.3250G>A variant in SCN3A is a missense variant predicted to cause the subsitution of valine by isoleucine at amino acid 1084 (p.Val1084Ile). The variant is present in 0.5% of the total population, and 0.7% of the European (non-Finnish) population, in gnomAD v2.1.1, which exceeds the threshold of 0.01% for BA1. The in silico predictor REVEL score for this variant is 0.155 which meets the criteria for BP4_Moderate. The variant has not been reported in an individual with developmental and epileptic encepathalopathy in the reported literature to date, and does not fall within a pathogenic enriched region. In summary, this variant meets the criteria to be classified as benign for autosomal dominant developmental and epileptic encephalopathy based on the ACMG/AMP criteria applied, as specified by the ClinGen Epilepsy Sodium Channel VCEP: BA1, BP4_Moderate (specification v1.0; approved 6/27/23). LINK:https://erepo.genome.network/evrepo/ui/classification/CA214587/MONDO:0100062/069
Frequency
Consequence
NM_006922.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Benign. Variant got -9 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.00515 AC: 783AN: 152152Hom.: 3 Cov.: 32
GnomAD3 exomes AF: 0.00514 AC: 1293AN: 251398Hom.: 9 AF XY: 0.00526 AC XY: 715AN XY: 135870
GnomAD4 exome AF: 0.00783 AC: 11441AN: 1461840Hom.: 68 Cov.: 32 AF XY: 0.00766 AC XY: 5574AN XY: 727226
GnomAD4 genome AF: 0.00514 AC: 783AN: 152270Hom.: 3 Cov.: 32 AF XY: 0.00488 AC XY: 363AN XY: 74444
ClinVar
Submissions by phenotype
not specified Benign:3
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not provided Benign:3
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SCN3A: BP4, BS1, BS2 -
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Early infantile epileptic encephalopathy with suppression bursts Benign:1
The c.3250G>A variant in SCN3A is a missense variant predicted to cause the subsitution of valine by isoleucine at amino acid 1084 (p.Val1084Ile). The variant is present in 0.5% of the total population, and 0.7% of the European (non-Finnish) population, in gnomAD v2.1.1, which exceeds the threshold of 0.01% for BA1. The in silico predictor REVEL score for this variant is 0.155 which meets the criteria for BP4_Moderate. The variant has not been reported in an individual with developmental and epileptic encepathalopathy in the reported literature to date, and does not fall within a pathogenic enriched region. In summary, this variant meets the criteria to be classified as benign for autosomal dominant developmental and epileptic encephalopathy based on the ACMG/AMP criteria applied, as specified by the ClinGen Epilepsy Sodium Channel VCEP: BA1, BP4_Moderate (specification v1.0; approved 6/27/23). -
Epilepsy, familial focal, with variable foci 4;C4693699:Developmental and epileptic encephalopathy, 62 Benign:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at