3-10141918-G-T

Position:

• chr3-10141918-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 4P and 2B. PM1 PM2 BP4_Moderate

The NM_000551.4(VHL):​c.71G>T​(p.Gly24Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000721 in 1,387,288 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 7.2e-7 (0 hom.)
• Consequence: VHL NM_000551.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.790

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 2 ACMG points.

• PM1: In a chain von Hippel-Lindau disease tumor suppressor (size 212) in uniprot entity VHL_HUMAN there are 96 pathogenic changes around while only 8 benign (92%) in NM_000551.4
• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.1148884).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
VHL	NM_000551.4	c.71G>T	p.Gly24Val	missense_variant	1/3	ENST00000256474.3	NP_000542.1
VHL	NM_001354723.2	c.71G>T	p.Gly24Val	missense_variant	1/3		NP_001341652.1
VHL	NM_198156.3	c.71G>T	p.Gly24Val	missense_variant	1/2		NP_937799.1
VHL	NR_176335.1	n.141G>T		non_coding_transcript_exon_variant	1/4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
VHL	ENST00000256474.3	c.71G>T	p.Gly24Val	missense_variant	1/3	1	NM_000551.4	ENSP00000256474	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 7.21e-7 AC: 1 AN: 1387288 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 682662

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

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: 9.32e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

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

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

May 31, 2021

This sequence change replaces glycine with valine at codon 24 of the VHL protein (p.Gly24Val). The glycine residue is weakly conserved and there is a moderate physicochemical difference between glycine and valine. The frequency data for this variant in the population databases is considered unreliable, as metrics indicate insufficient coverage at this position in the ExAC database. 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. 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) performed at Invitae indicates that this missense variant is not expected to disrupt VHL protein function. This variant has not been reported in the literature in individuals with VHL-related conditions. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.10
BayesDel_addAF	Uncertain	0.051	T
BayesDel_noAF	Benign	-0.17
CADD	Benign	21
DANN	Benign	0.92
DEOGEN2	Benign	0.37	T;.
Eigen	Benign	-0.76
Eigen_PC	Benign	-0.86
FATHMM_MKL	Benign	0.23	N
LIST_S2	Uncertain	0.88	D;D
M_CAP	Benign	0.048	D
MetaRNN	Benign	0.11	T;T
MetaSVM	Benign	-0.63	T
MutationAssessor	Benign	0.69	N;N
MutationTaster	Benign	1.0	N;N
PrimateAI	Uncertain	0.54	T
PROVEAN	Benign	-0.67	N;N
REVEL	Uncertain	0.31
Sift	Pathogenic	0.0	.;D
Sift4G	Uncertain	0.038	D;D
Polyphen		0.16	B;P
Vest4		0.21
MutPred		0.23		Gain of glycosylation at Y23 (P = 0.0012);Gain of glycosylation at Y23 (P = 0.0012);
MVP		0.99
MPC		1.2
ClinPred		0.45	T
GERP RS		1.4
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.087
gMVP		0.56

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr3-10183602;