rs1060503566
Variant summary
Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM1
The NM_000551.4(VHL):c.520A>T(p.Asn174Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000616 in 1,461,888 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).
Frequency
Consequence
NM_000551.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 2 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
VHL | NM_000551.4 | c.520A>T | p.Asn174Tyr | missense_variant | Exon 3 of 3 | ENST00000256474.3 | NP_000542.1 | |
VHL | NM_198156.3 | c.397A>T | p.Asn133Tyr | missense_variant | Exon 2 of 2 | NP_937799.1 | ||
VHL | NM_001354723.2 | c.*74A>T | 3_prime_UTR_variant | Exon 3 of 3 | NP_001341652.1 | |||
VHL | NR_176335.1 | n.849A>T | non_coding_transcript_exon_variant | Exon 4 of 4 |
Ensembl
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD3 exomes AF: 0.00000398 AC: 1AN: 251452Hom.: 0 AF XY: 0.00000736 AC XY: 1AN XY: 135904
GnomAD4 exome AF: 0.00000616 AC: 9AN: 1461888Hom.: 0 Cov.: 30 AF XY: 0.00000963 AC XY: 7AN XY: 727244
GnomAD4 genome Cov.: 32
ClinVar
Submissions by phenotype
Von Hippel-Lindau syndrome Uncertain:1
This missense variant replaces asparagine with tyrosine at codon 174 of the VHL protein. Computational prediction is inconclusive regarding the impact of this variant on protein structure and function (internally defined REVEL score threshold 0.5 < inconclusive < 0.7, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with hereditary cancer in the literature. This variant has been identified in 1/251452 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -
Von Hippel-Lindau syndrome;C1837915:Chuvash polycythemia Uncertain:1
This sequence change replaces asparagine, which is neutral and polar, with tyrosine, which is neutral and polar, at codon 174 of the VHL protein (p.Asn174Tyr). This variant is present in population databases (no rsID available, gnomAD 0.0009%). This variant has not been reported in the literature in individuals affected with VHL-related conditions. ClinVar contains an entry for this variant (Variation ID: 411983). 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%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -
Hereditary cancer-predisposing syndrome Uncertain:1
The p.N174Y variant (also known as c.520A>T), located in coding exon 3 of the VHL gene, results from an A to T substitution at nucleotide position 520. The asparagine at codon 174 is replaced by tyrosine, an amino acid with dissimilar properties. This amino acid position is poorly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at