rs778205243

chr3-10149867-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM1 BP6

The NM_000551.4(VHL):c.544A>G(p.Arg182Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000372 in 1,614,094 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. R182K) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000034 (0 hom.)
• Consequence: VHL NM_000551.4 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:5 B:2
• Conservation: PhyloP100: 0.841

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 Uncertain_significance. Variant got 1 ACMG points.

• PM1: In a hotspot region, there are 6 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 15 uncertain in NM_000551.4
• BP6: Variant 3-10149867-A-G is Benign according to our data. Variant chr3-10149867-A-G is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 220655.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=5, Likely_benign=2}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
VHL	NM_000551.4	c.544A>G	p.Arg182Gly	missense_variant	3/3	ENST00000256474.3
VHL	NM_198156.3	c.421A>G	p.Arg141Gly	missense_variant	2/2
VHL	NM_001354723.2	c.*98A>G		3_prime_UTR_variant	3/3
VHL	NR_176335.1	n.873A>G		non_coding_transcript_exon_variant	4/4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
VHL	ENST00000256474.3	c.544A>G	p.Arg182Gly	missense_variant	3/3	1	NM_000551.4	P1

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152212 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000655

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.0000199 AC: 5 AN: 251428 Hom.: 0 AF XY: 0.0000221 AC XY: 3 AN XY: 135900

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.000145

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000342 AC: 5 AN: 1461882 Hom.: 0 Cov.: 30 AF XY: 0.00000413 AC XY: 3 AN XY: 727242

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.000112

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152212 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74362

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.0000655

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

ExAC AF: 0.0000247 AC: 3

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:5 Benign:2

Revision: criteria provided, conflicting classifications

Submissions by phenotype

Von Hippel-Lindau syndrome Uncertain:2 Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	All of Us Research Program, National Institutes of Health	Jan 11, 2024	This missense variant replaces arginine with glycine at codon 182 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 been reported in heterozygous state in an individual affected with suspected hereditary erythrocytosis (PMID: 29790589). This variant has been identified in 6/282832 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. -
Likely benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 12, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -
Uncertain significance, criteria provided, single submitter	clinical testing	Counsyl	Jun 04, 2018	- -

not provided Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	Mar 07, 2018	- -
Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Apr 13, 2018	This variant is denoted VHL c.544A>G at the cDNA level, p.Arg182Gly (R182G) at the protein level, and results in the change of an Arginine to a Glycine (AGG>GGG). This variant has not, to our knowledge, been published in the literature as being pathogenic or benign. VHL Arg182Gly was observed at an allele frequency of 0.01% (5/34418) in individuals of Latino ancestry in large population cohorts (Lek 2016). Since Arginine and Glycine differ in polarity, charge, size or other properties, this is considered a non-conservative amino acid substitution. VHL Arg182Gly is located in the alpha domain (Yuen 2009). In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect. Based on currently available evidence, it is unclear whether VHL Arg182Gly is pathogenic or benign. We consider it to be a variant of uncertain significance. -

Von Hippel-Lindau syndrome;C1837915:Chuvash polycythemia Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Jan 15, 2024

This sequence change replaces arginine, which is basic and polar, with glycine, which is neutral and non-polar, at codon 182 of the VHL protein (p.Arg182Gly). This variant is present in population databases (rs778205243, gnomAD 0.01%). This missense change has been observed in individual(s) with clinical features of hereditary erythrocytosis (PMID: 29790589). ClinVar contains an entry for this variant (Variation ID: 220655). 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) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on VHL protein function. 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 Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 08, 2023

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.19
BayesDel_addAF	Pathogenic	0.20	D
BayesDel_noAF	Pathogenic	0.30
Cadd	Benign	20
Dann	Uncertain	0.99
DEOGEN2	Pathogenic	0.94	D;.
Eigen	Benign	-0.25
Eigen_PC	Benign	-0.41
FATHMM_MKL	Benign	0.14	N
LIST_S2	Benign	0.83	T;T
M_CAP	Pathogenic	0.72	D
MetaRNN	Uncertain	0.56	D;D
MetaSVM	Pathogenic	1.2	D
MutationAssessor	Benign	1.4	L;.
MutationTaster	Benign	1.0	N;N
PrimateAI	Benign	0.42	T
PROVEAN	Uncertain	-4.3	D;D
REVEL	Pathogenic	0.67
Sift4G	Uncertain	0.011	D;D
Polyphen		0.91	P;P
Vest4		0.26
MutPred		0.75		Gain of glycosylation at Y185 (P = 0.0103);.;
MVP		0.99
MPC		0.42
ClinPred		0.79	D
GERP RS		0.95
Varity_R		0.94
gMVP		0.85

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

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

Publications

LitVar

Other links and lift over

dbSNP: rs778205243; hg19: chr3-10191551;