rs1553620331

Positions:

• chr3-10149853-GACTGGACATCGT-GTC

Variant summary

Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1 PM2 PP5_Very_Strong

The NM_000551.4(VHL):​c.531_542delinsTC​(p.Arg177SerfsTer22) variant causes a frameshift change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Likely pathogenic (★★). Synonymous variant affecting the same amino acid position (i.e. R177R) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: VHL NM_000551.4 frameshift
• Clinical Significance: Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:2
• Conservation: PhyloP100: 7.78

Genes affected

VHL (HGNC:12687): (von Hippel-Lindau tumor suppressor) This gene encodes a component of a ubiquitination complex. The encoded protein is involved in the ubiquitination and degradation of hypoxia-inducible-factor (HIF), which is a transcription factor that plays a central role in the regulation of gene expression by oxygen. In addition to oxygen-related gene expression, this protein plays a role in many other cellular processes including cilia formation, cytokine signaling, regulation of senescence, and formation of the extracellular matrix. Variants of this gene are associated with von Hippel-Lindau syndrome, pheochromocytoma, erythrocytosis, renal cell carcinoma, and cerebellar hemangioblastoma. [provided by RefSeq, Jun 2022]

ACMG classification

Verdict is Pathogenic. Variant got 18 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. There are 44 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 3-10149854-ACTGGACATCGT-TC is Pathogenic according to our data. Variant chr3-10149854-ACTGGACATCGT-TC is described in ClinVar as [Likely_pathogenic]. Clinvar id is 545823.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
VHL	NM_000551.4	c.531_542delinsTC	p.Arg177SerfsTer22	frameshift_variant	3/3	ENST00000256474.3
VHL	NM_198156.3	c.408_419delinsTC	p.Arg136SerfsTer22	frameshift_variant	2/2
VHL	NM_001354723.2	c.*85_*96delinsTC		3_prime_UTR_variant	3/3
VHL	NR_176335.1	n.860_871delinsTC		non_coding_transcript_exon_variant	4/4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
VHL	ENST00000256474.3	c.531_542delinsTC	p.Arg177SerfsTer22	frameshift_variant	3/3	1	NM_000551.4	P1

Frequencies

GnomAD3 genomes Cov.: 32

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Von Hippel-Lindau syndrome Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Center for Human Genetics, Inc, Center for Human Genetics, Inc

Nov 01, 2016

- -

not provided Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

GeneDx

Sep 14, 2017

This combined deletion and insertion is denoted VHL c.531_542del12insTC at the cDNA level and p.Arg177SerfsX22 (R177SfsX22) at the protein level. The surrounding sequence is GGAG[del12][insTC]CAGG. The variant causes a frameshift which changes an Arginine to a Serine at codon 177, and creates a premature stop codon at position 22 of the new reading frame. Although this variant has not, to our knowledge, been reported in the literature, it is predicted to cause loss of normal protein function through protein truncation. The disrupted region at the end of the gene is located within the alpha domain, involved in Elongin C binding, and the beta domain, which interacts with the ODD domain of HIF-alpha subunits (Yuen 2009). Based on the currently available information, we consider VHL c.531_542del12insTC to be a likely pathogenic variant. -

Computational scores

Source: dbNSFP v4.3

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs1553620331; hg19: chr3-10191538;