rs104894270
Variant summary
Our verdict is Pathogenic. The variant received 14 ACMG points: 14P and 0B. PM2PP3_StrongPP5_Very_Strong
The NM_004551.3(NDUFS3):c.595C>T(p.Arg199Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000991 in 1,613,972 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 13/22 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R199Q) has been classified as Uncertain significance.
Frequency
Consequence
NM_004551.3 missense
Scores
Clinical Significance
Conservation
Publications
- mitochondrial complex I deficiency, nuclear type 8Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
- Leigh syndromeInheritance: AR Classification: MODERATE Submitted by: ClinGen
- Leigh syndrome with leukodystrophyInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
- mitochondrial complex I deficiencyInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
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ACMG classification
Our verdict: Pathogenic. The variant received 14 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000263 AC: 4AN: 152198Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.0000159 AC: 4AN: 251486 AF XY: 0.0000221 show subpopulations
GnomAD4 exome AF: 0.00000821 AC: 12AN: 1461774Hom.: 0 Cov.: 31 AF XY: 0.0000124 AC XY: 9AN XY: 727188 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.0000263 AC: 4AN: 152198Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2AN XY: 74358 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
Mitochondrial complex I deficiency, nuclear type 8 Pathogenic:2
This variant is interpreted as a Likely pathogenic for Mitochondrial complex I deficiency, nuclear type 8, autosomal recessive. The following ACMG Tag(s) were applied: PM2 : Absent from controls (or at extremely low frequency if recessive) in Exome Sequencing Project, 1000 Genomes Project, or Exome Aggregation Consortium. PP3 : Multiple lines of computational evidence support a deleterious effect on the gene or gene product. PP1 : Cosegregation with disease in multiple affected family members in a gene definitively known to cause the disease (PMID:14729820). PS3 : Well-established functional studies show a deleterious effect (PMID:22499348). -
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not provided Pathogenic:1
For these reasons, this variant has been classified as Pathogenic. 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) performed at Invitae indicates that this missense variant is expected to disrupt NDUFS3 protein function. ClinVar contains an entry for this variant (Variation ID: 6020). This missense change has been observed in individuals with mitochondrial complex I deficiency (PMID: 14729820, 22499348, 30140060). It has also been observed to segregate with disease in related individuals. This variant is present in population databases (rs104894270, gnomAD 0.006%). This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 199 of the NDUFS3 protein (p.Arg199Trp). -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at