rs1060503709
Positions:
Variant summary
Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2
The NM_004168.4(SDHA):c.446C>T(p.Ala149Val) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. 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. A149T) has been classified as Uncertain significance.
Frequency
Genomes: not found (cov: 32)
Consequence
SDHA
NM_004168.4 missense
NM_004168.4 missense
Scores
2
6
11
Clinical Significance
Conservation
PhyloP100: 5.56
Genes affected
SDHA (HGNC:10680): (succinate dehydrogenase complex flavoprotein subunit A) This gene encodes a major catalytic subunit of succinate-ubiquinone oxidoreductase, a complex of the mitochondrial respiratory chain. The complex is composed of four nuclear-encoded subunits and is localized in the mitochondrial inner membrane. Mutations in this gene have been associated with a form of mitochondrial respiratory chain deficiency known as Leigh Syndrome. A pseudogene has been identified on chromosome 3q29. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jun 2014]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 2 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
SDHA | NM_004168.4 | c.446C>T | p.Ala149Val | missense_variant | 4/15 | ENST00000264932.11 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
SDHA | ENST00000264932.11 | c.446C>T | p.Ala149Val | missense_variant | 4/15 | 1 | NM_004168.4 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD4 exome Cov.: 32
GnomAD4 exome
Cov.:
32
GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Paragangliomas 5;C5700310:Mitochondrial complex II deficiency, nuclear type 1 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Apr 01, 2016 | 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 variant is not present in population databases (ExAC no frequency) and has not been reported in the literature in individuals with a SDHA-related disease. This sequence change replaces alanine with valine at codon 149 of the SDHA protein (p.Ala149Val). The alanine residue is moderately conserved and there is a small physicochemical difference between alanine and valine. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
CADD
Benign
DANN
Uncertain
DEOGEN2
Benign
T;.
Eigen
Benign
Eigen_PC
Benign
FATHMM_MKL
Pathogenic
D
LIST_S2
Pathogenic
D;D
M_CAP
Benign
D
MetaRNN
Uncertain
T;T
MetaSVM
Benign
T
MutationAssessor
Benign
L;.
MutationTaster
Benign
D;D;D
PrimateAI
Uncertain
T
PROVEAN
Uncertain
D;D
REVEL
Uncertain
Sift
Uncertain
D;T
Sift4G
Benign
T;T
Polyphen
B;B
Vest4
MutPred
Gain of catalytic residue at A149 (P = 0.0883);Gain of catalytic residue at A149 (P = 0.0883);
MVP
MPC
ClinPred
D
GERP RS
RBP_binding_hub_radar
RBP_regulation_power_radar
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at