rs774912781
Variant summary
Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2
The NM_001386795.1(DTNA):c.239G>A(p.Arg80His) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000768 in 1,613,974 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Consequence
NM_001386795.1 missense
Scores
Clinical Significance
Conservation
Genome browser will be placed here
ACMG classification
Verdict is Likely_benign. Variant got -4 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
DTNA | NM_001386795.1 | c.239G>A | p.Arg80His | missense_variant | Exon 4 of 23 | ENST00000444659.6 | NP_001373724.1 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
DTNA | ENST00000444659.6 | c.239G>A | p.Arg80His | missense_variant | Exon 4 of 23 | 5 | NM_001386795.1 | ENSP00000405819.2 |
Frequencies
GnomAD3 genomes AF: 0.0000526 AC: 8AN: 152118Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.0000557 AC: 14AN: 251296Hom.: 0 AF XY: 0.0000368 AC XY: 5AN XY: 135808
GnomAD4 exome AF: 0.0000794 AC: 116AN: 1461856Hom.: 0 Cov.: 32 AF XY: 0.0000646 AC XY: 47AN XY: 727226
GnomAD4 genome AF: 0.0000526 AC: 8AN: 152118Hom.: 0 Cov.: 32 AF XY: 0.0000538 AC XY: 4AN XY: 74314
ClinVar
Submissions by phenotype
not provided Uncertain:1
p.Arg80His (c.239G>A) in exon 4 of the DTNA gene (NM_032978.6) Chromosome location 18:32374091 G / A Based on the information reviewed below, we classify this as a variant of uncertain significance (VUS)concluding that there is not sufficient evidence for its pathogenicity to warrant using it for predictive genetic testing. According to the Invitae report, this variant has not been reported in the literature in association with disease. This is a conservative amino acid change, resulting in the replacement of a positively-charged Arginine with a positively-charged Histidine. Arginine at this location is highly conserved across ~100 vertebrate species for which we have data. However, Histidine is the default amino acid in at least one species. There are no Likely Pathogenic or Pathogenic variants currently listed in ClinVar within 10 amino acids to either side. According to the Invitae report, 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 C25"). This variant was reported in 17 individuals in the gnomAD database, which includes variant calls on ~140,000 individuals of European, African, Latino, South Asian, Ashkenazi, and East Asian descent. Specifically, the variant was observed in 2 "Other ancestry", 2 East-Asian, 10 non-Finnish European, 2 Latino (out of 17,196, MAF = 0.006%), and 1 African ancestry individual. Ovarall minor allele frequency (MAF) = 0.006%. The phenotype of those individuals is not publicly available. The dataset is comprised of multiple cohorts, some of which were recruited from the general population, others were enriched for common cardiovascular disease. The curators made an effort to exclude individuals with severe pediatric diseases -
Left ventricular noncompaction 1 Uncertain:1
This sequence change replaces arginine, which is basic and polar, with histidine, which is basic and polar, at codon 80 of the DTNA protein (p.Arg80His). This variant is present in population databases (rs774912781, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with DTNA-related conditions. ClinVar contains an entry for this variant (Variation ID: 411865). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt DTNA protein function with a negative predictive value of 80%. 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. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at