rs104895352
Variant summary
Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PM1PM2PM5PP5_Very_Strong
The NM_000431.4(MVK):c.830G>A(p.Arg277His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000155 in 1,614,068 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. R277C) has been classified as Likely pathogenic.
Frequency
Consequence
NM_000431.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 14 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
MVK | NM_000431.4 | c.830G>A | p.Arg277His | missense_variant | 9/11 | ENST00000228510.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
MVK | ENST00000228510.8 | c.830G>A | p.Arg277His | missense_variant | 9/11 | 1 | NM_000431.4 | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.0000263 AC: 4AN: 152184Hom.: 0 Cov.: 33
GnomAD3 exomes AF: 0.00000795 AC: 2AN: 251464Hom.: 0 AF XY: 0.0000147 AC XY: 2AN XY: 135904
GnomAD4 exome AF: 0.0000144 AC: 21AN: 1461884Hom.: 0 Cov.: 33 AF XY: 0.0000110 AC XY: 8AN XY: 727242
GnomAD4 genome ? AF: 0.0000263 AC: 4AN: 152184Hom.: 0 Cov.: 33 AF XY: 0.0000269 AC XY: 2AN XY: 74338
ClinVar
Submissions by phenotype
Hyperimmunoglobulin D with periodic fever;C1867981:Porokeratosis 3, disseminated superficial actinic type;C1959626:Mevalonic aciduria Pathogenic:2
Likely pathogenic, criteria provided, single submitter | clinical testing | Fulgent Genetics, Fulgent Genetics | Nov 30, 2021 | - - |
Pathogenic, criteria provided, single submitter | clinical testing | Invitae | Oct 14, 2023 | This sequence change replaces arginine, which is basic and polar, with histidine, which is basic and polar, at codon 277 of the MVK protein (p.Arg277His). This variant is present in population databases (rs104895352, gnomAD 0.008%). This missense change has been observed in individual(s) with hyperimmunoglobulinemia D and periodic fever syndrome (HIDS) (PMID: 16255052). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 97631). 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 not expected to disrupt MVK protein function. This variant disrupts the p.Arg277 amino acid residue in MVK. Other variant(s) that disrupt this residue have been observed in individuals with MVK-related conditions (PMID: 11111075, 16835861, 24656624), which suggests that this may be a clinically significant amino acid residue. For these reasons, this variant has been classified as Pathogenic. - |
Autoinflammatory syndrome Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | Genome Diagnostics Laboratory, The Hospital for Sick Children | Nov 01, 2019 | - - |
Hyperimmunoglobulin D with periodic fever Other:1
not provided, no classification provided | literature only | Unité médicale des maladies autoinflammatoires, CHRU Montpellier | - | - - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at