3-10141850-G-C
Variant summary
Our verdict is Uncertain significance. The variant received 5 ACMG points: 6P and 1B. PVS1_StrongPM2BP6
The NM_000551.4(VHL):c.3G>C(p.Met1?) variant causes a start lost change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000723 in 1,383,052 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 Conflicting classifications of pathogenicity (no stars).
Frequency
Consequence
NM_000551.4 start_lost
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: Uncertain_significance. The variant received 5 ACMG points.
Variant Effect in Transcripts
ACMG analysis was done for transcript: NM_000551.4. You can select a different transcript below to see updated ACMG assignments.
RefSeq Transcripts
| Selected | Gene | Transcript | Tags | HGVSc | HGVSp | Effect | Exon Rank | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|---|
| VHL | NM_000551.4 | MANE Select | c.3G>C | p.Met1? | start_lost | Exon 1 of 3 | NP_000542.1 | ||
| VHL | NM_001354723.2 | c.3G>C | p.Met1? | start_lost | Exon 1 of 3 | NP_001341652.1 | |||
| VHL | NM_198156.3 | c.3G>C | p.Met1? | start_lost | Exon 1 of 2 | NP_937799.1 |
Ensembl Transcripts
| Selected | Gene | Transcript | Tags | HGVSc | HGVSp | Effect | Exon Rank | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|---|
| VHL | ENST00000256474.3 | TSL:1 MANE Select | c.3G>C | p.Met1? | start_lost | Exon 1 of 3 | ENSP00000256474.3 | ||
| VHL | ENST00000345392.3 | TSL:1 | c.3G>C | p.Met1? | start_lost | Exon 1 of 2 | ENSP00000344757.2 | ||
| VHL | ENST00000477538.2 | TSL:1 | n.49G>C | non_coding_transcript_exon | Exon 1 of 3 |
Frequencies
GnomAD3 genomes Cov.: 33
GnomAD4 exome AF: 7.23e-7 AC: 1AN: 1383052Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 680752 show subpopulations
Age Distribution
GnomAD4 genome Cov.: 33
ClinVar
Submissions by phenotype
Von Hippel-Lindau syndrome;C1837915:Chuvash polycythemia Uncertain:1
This sequence change affects the initiator methionine of the VHL mRNA. The next in-frame methionine is located at codon 54. It is unclear whether it will result in an absent or disrupted protein product because an in-frame methionine located at codon 54 has the potential to rescue this variant. This variant is not present in population databases (gnomAD no frequency). Disruption of the initiator codon has been observed in individual(s) with breast cancer and/or pilocytic astrocytoma (PMID: 30093976, 33840814). ClinVar contains an entry for this variant (Variation ID: 582995). Several studies have shown that the VHL protein created from a downstream methionine located at codon 54 is biologically active, and exhibits properties similar to the full-length, wild-type protein (PMID: 9671762, 9751722). 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.M1? variant (also known as c.3G>C), located in coding exon 1 of the VHL gene, results from a G to C substitution at nucleotide position 3. This alters the methionine residue at the initiation codon. Variations that modify the initiation codon (ATG) are expected to result in either loss of translation initiation or N-terminal truncation; however, an alternate initiation codon exists downstream of this alteration, and is reported to result in a biologically active isoform, known as VHL19 (Schoenfeld A et al. Proc. Natl. Acad. Sci. U.S.A. 1998 Jul; 95(15):8817-22; Iliopoulos O et al. Proc. Natl. Acad. Sci. U.S.A. 1998 Sep; 95(20):11661-6). This amino acid position is well conserved in available vertebrate species. Based on the available evidence, the clinical significance of this variant remains unclear.
Von Hippel-Lindau syndrome Benign:1
This variant is considered likely benign. This variant has been observed at a population frequency that is significantly greater than expected given the associated disease prevalence and penetrance.
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at