rs776232246
Variant summary
Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate
The NM_020822.3(KCNT1):c.3244C>G(p.Arg1082Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1082C) has been classified as Likely benign.
Frequency
Consequence
NM_020822.3 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 0 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
KCNT1 | NM_020822.3 | c.3244C>G | p.Arg1082Gly | missense_variant | 29/31 | ENST00000371757.7 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
KCNT1 | ENST00000371757.7 | c.3244C>G | p.Arg1082Gly | missense_variant | 29/31 | 1 | NM_020822.3 | A2 |
Frequencies
GnomAD3 genomes ? Cov.: 33
GnomAD4 exome Cov.: 36
GnomAD4 genome ? Cov.: 33
ClinVar
Submissions by phenotype
Developmental and epileptic encephalopathy, 14;C3554306:Autosomal dominant nocturnal frontal lobe epilepsy 5 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Jul 11, 2016 | This variant is not present in population databases (ExAC no frequency) and has not been reported in the literature in individuals with a KCNT1-related disease. In summary, this variant is a novel missense change with uncertain impact on protein function. It has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0"). This sequence change replaces arginine with glycine at codon 1082 of the KCNT1 protein (p.Arg1082Gly). The arginine residue is moderately conserved and there is a moderate physicochemical difference between arginine and glycine. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at