3-10142082-C-G
Variant summary
Our verdict is Likely pathogenic. The variant received 9 ACMG points: 9P and 0B. PM1PM2PM5PP3_ModeratePP5
The NM_000551.4(VHL):c.235C>G(p.Arg79Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R79L) has been classified as Uncertain significance.
Frequency
Consequence
NM_000551.4 missense
Scores
Clinical Significance
Conservation
Publications
- pheochromocytomaInheritance: AD Classification: DEFINITIVE Submitted by: G2P
- von Hippel-Lindau diseaseInheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), G2P, Orphanet
- renal cell carcinomaInheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
- autosomal recessive secondary polycythemia not associated with VHL geneInheritance: AR Classification: STRONG Submitted by: Ambry Genetics
- Chuvash polycythemiaInheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Orphanet
- hereditary pheochromocytoma-paragangliomaInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
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ACMG classification
Our verdict: Likely_pathogenic. The variant received 9 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| VHL | NM_000551.4 | c.235C>G | p.Arg79Gly | missense_variant | Exon 1 of 3 | ENST00000256474.3 | NP_000542.1 | |
| VHL | NM_001354723.2 | c.235C>G | p.Arg79Gly | missense_variant | Exon 1 of 3 | NP_001341652.1 | ||
| VHL | NM_198156.3 | c.235C>G | p.Arg79Gly | missense_variant | Exon 1 of 2 | NP_937799.1 | ||
| VHL | NR_176335.1 | n.305C>G | non_coding_transcript_exon_variant | Exon 1 of 4 |
Ensembl
Frequencies
GnomAD3 genomes Cov.: 33
GnomAD4 exome Cov.: 32
GnomAD4 genome Cov.: 33
ClinVar
Submissions by phenotype
Von Hippel-Lindau syndrome;C1837915:Chuvash polycythemia Pathogenic:1
This sequence change replaces arginine, which is basic and polar, with glycine, which is neutral and non-polar, at codon 79 of the VHL protein (p.Arg79Gly). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individuals with clinical features of von Hippel-Lindau syndrome and/or retinal hemangioblastoma (PMID: 33720516; internal data). ClinVar contains an entry for this variant (Variation ID: 411988). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is expected to disrupt VHL protein function with a positive predictive value of 95%. This variant disrupts the p.Arg79 amino acid residue in VHL. Other variant(s) that disrupt this residue have been observed in individuals with VHL-related conditions (PMID: 15642680, 24555745), which suggests that this may be a clinically significant amino acid residue. For these reasons, this variant has been classified as Pathogenic. -
Hereditary cancer-predisposing syndrome Pathogenic:1
The p.R79G variant (also known as c.235C>G), located in coding exon 1 of the VHL gene, results from a C to G substitution at nucleotide position 235. The arginine at codon 79 is replaced by glycine, an amino acid with dissimilar properties. This variant was reported in individual(s) with features consistent with von Hippel-Lindau syndrome (Yonamine M et al. Cancers (Basel), 2021 Aug;13; Reich M et al. Acta Ophthalmol, 2021 Dec;99:e1492-e1500; Ambry internal data). This variant is considered to be rare based on population cohorts in the Genome Aggregation Database (gnomAD). This amino acid position is well conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Based on the majority of available evidence to date, this variant is likely to be pathogenic. -
not provided Uncertain:1
Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Observed in an individual with retinal hemangioblastoma and in another individual with unspecified personal and family history of VHL-related cancers (Reich et al., 2021); This variant is associated with the following publications: (PMID: 33720516) -
Von Hippel-Lindau syndrome;C0031511:Pheochromocytoma;C1837915:Chuvash polycythemia;CN074294:Nonpapillary renal cell carcinoma Uncertain:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at