chr8-27463344-G-A
Variant summary
Our verdict is Benign. Variant got -10 ACMG points: 2P and 12B. PP3_ModerateBP6_Very_StrongBS2
The NM_000742.4(CHRNA2):c.1099C>T(p.Arg367Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000242 in 1,613,778 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R367Q) has been classified as Likely benign.
Frequency
Consequence
NM_000742.4 missense
Scores
Clinical Significance
Conservation
Genome browser will be placed here
ACMG classification
Verdict is Benign. Variant got -10 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
CHRNA2 | NM_000742.4 | c.1099C>T | p.Arg367Trp | missense_variant | 6/7 | ENST00000407991.3 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
CHRNA2 | ENST00000407991.3 | c.1099C>T | p.Arg367Trp | missense_variant | 6/7 | 5 | NM_000742.4 | P2 |
Frequencies
GnomAD3 genomes AF: 0.0000657 AC: 10AN: 152176Hom.: 0 Cov.: 33
GnomAD3 exomes AF: 0.0000762 AC: 19AN: 249216Hom.: 0 AF XY: 0.0000519 AC XY: 7AN XY: 134876
GnomAD4 exome AF: 0.0000198 AC: 29AN: 1461602Hom.: 0 Cov.: 32 AF XY: 0.0000193 AC XY: 14AN XY: 727066
GnomAD4 genome AF: 0.0000657 AC: 10AN: 152176Hom.: 0 Cov.: 33 AF XY: 0.0000807 AC XY: 6AN XY: 74350
ClinVar
Submissions by phenotype
Autosomal dominant nocturnal frontal lobe epilepsy Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Invitae | Jan 10, 2024 | - - |
Inborn genetic diseases Benign:1
Benign, criteria provided, single submitter | clinical testing | Ambry Genetics | Jul 13, 2021 | This alteration is classified as 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. - |
not provided Benign:1
Likely benign, criteria provided, single submitter | clinical testing | GeneDx | Feb 11, 2019 | - - |
Autosomal dominant nocturnal frontal lobe epilepsy 4 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