rs1483236652
Variant summary
Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2PP3_Strong
The NM_004168.4(SDHA):c.1034G>A(p.Arg345Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,461,794 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 Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R345G) has been classified as Uncertain significance.
Frequency
Consequence
NM_004168.4 missense
Scores
Clinical Significance
Conservation
Genome browser will be placed here
ACMG classification
Verdict is Likely_pathogenic. Variant got 6 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
SDHA | NM_004168.4 | c.1034G>A | p.Arg345Gln | missense_variant | 8/15 | ENST00000264932.11 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
SDHA | ENST00000264932.11 | c.1034G>A | p.Arg345Gln | missense_variant | 8/15 | 1 | NM_004168.4 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 33
GnomAD3 exomes AF: 0.00000398 AC: 1AN: 251470Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 135908
GnomAD4 exome AF: 0.00000274 AC: 4AN: 1461794Hom.: 0 Cov.: 32 AF XY: 0.00000275 AC XY: 2AN XY: 727216
GnomAD4 genome ? Cov.: 33
ClinVar
Submissions by phenotype
Paragangliomas 5;C5700310:Mitochondrial complex II deficiency, nuclear type 1 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Jan 22, 2024 | This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 345 of the SDHA protein (p.Arg345Gln). This variant is present in population databases (no rsID available, gnomAD 0.0009%). This variant has not been reported in the literature in individuals affected with SDHA-related conditions. ClinVar contains an entry for this variant (Variation ID: 472295). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on SDHA protein function. 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. - |
Hereditary cancer-predisposing syndrome Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Jun 14, 2022 | The p.R345Q variant (also known as c.1034G>A), located in coding exon 8 of the SDHA gene, results from a G to A substitution at nucleotide position 1034. The arginine at codon 345 is replaced by glutamine, an amino acid with highly similar properties. This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at