rs387907087
Variant summary
Our verdict is Pathogenic. The variant received 14 ACMG points: 14P and 0B. PM2PP3_StrongPP5_Very_Strong
The NM_017547.4(FOXRED1):c.1054C>T(p.Arg352Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000808 in 1,608,600 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 Pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R352Q) has been classified as Uncertain significance.
Frequency
Consequence
NM_017547.4 missense
Scores
Clinical Significance
Conservation
Publications
- mitochondrial complex I deficiency, nuclear type 19Inheritance: AR Classification: DEFINITIVE Submitted by: G2P
- mitochondrial diseaseInheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
- mitochondrial complex I deficiency, nuclear type 1Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
- Leigh syndromeInheritance: AR Classification: MODERATE Submitted by: ClinGen, Laboratory for Molecular Medicine
- 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
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| FOXRED1 | NM_017547.4 | c.1054C>T | p.Arg352Trp | missense_variant | Exon 9 of 11 | ENST00000263578.10 | NP_060017.1 |
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| FOXRED1 | ENST00000263578.10 | c.1054C>T | p.Arg352Trp | missense_variant | Exon 9 of 11 | 1 | NM_017547.4 | ENSP00000263578.5 |
Frequencies
GnomAD3 genomes AF: 0.0000133 AC: 2AN: 150916Hom.: 0 Cov.: 29 show subpopulations
GnomAD2 exomes AF: 0.0000240 AC: 6AN: 250006 AF XY: 0.0000221 show subpopulations
GnomAD4 exome AF: 0.00000755 AC: 11AN: 1457566Hom.: 0 Cov.: 34 AF XY: 0.00000552 AC XY: 4AN XY: 725112 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.0000132 AC: 2AN: 151034Hom.: 0 Cov.: 29 AF XY: 0.0000136 AC XY: 1AN XY: 73736 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
Mitochondrial complex I deficiency, nuclear type 19 Pathogenic:3
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Variant summary: FOXRED1 c.1054C>T (p.Arg352Trp) results in a non-conservative amino acid change located in the FAD dependent oxidoreductase domain (IPR006076) of the encoded protein sequence. Five of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 2.4e-05 in 250006 control chromosomes (gnomAD). c.1054C>T has been reported in the literature in individuals affected with Mitochondrial Complex 1 Deficiency, Nuclear Type 19 (e.g. Fassone_2010, Hu_2021). These data indicate that the variant is likely to be associated with disease. Publications also reported experimental evidence evaluating an impact on protein function, and demonstrated reduced complex I activity (e.g. Fassone_2010, Formosa_2015). The following publications have been ascertained in the context of this evaluation (PMID: 20858599, 33613441, 25678554). ClinVar contains an entry for this variant (Variation ID: 31048). Based on the evidence outlined above, the variant was classified as pathogenic. -
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Inborn genetic diseases Pathogenic:1
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not provided Pathogenic:1
This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 352 of the FOXRED1 protein (p.Arg352Trp). This variant is present in population databases (rs387907087, gnomAD 0.02%). This missense change has been observed in individual(s) with clinical features of mitochondrial complex I deficiency (PMID: 20858599, 33613441). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. ClinVar contains an entry for this variant (Variation ID: 31048). 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 FOXRED1 protein function. Studies have shown that this missense change alters FOXRED1 gene expression (PMID: 20858599). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. For these reasons, this variant has been classified as Pathogenic. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at