3-10142088-C-G

Variant names:

• chr3-10142088-C-G
• NM_000551.4:c.241C>G

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM1 PM2 PM5

The NM_000551.4(VHL):​c.241C>G​(p.Pro81Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P81L) has been classified as Likely pathogenic.

• Frequency: Genomes: not found (cov: 33)
• Consequence: VHL NM_000551.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.47

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 Likely_pathogenic. Variant got 6 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
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr3-10142089-C-T is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
VHL	NM_000551.4	c.241C>G	p.Pro81Ala	missense_variant	Exon 1 of 3	ENST00000256474.3	NP_000542.1
VHL	NM_001354723.2	c.241C>G	p.Pro81Ala	missense_variant	Exon 1 of 3		NP_001341652.1
VHL	NM_198156.3	c.241C>G	p.Pro81Ala	missense_variant	Exon 1 of 2		NP_937799.1
VHL	NR_176335.1	n.311C>G		non_coding_transcript_exon_variant	Exon 1 of 4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
VHL	ENST00000256474.3	c.241C>G	p.Pro81Ala	missense_variant	Exon 1 of 3	1	NM_000551.4	ENSP00000256474.3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 32

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

May 16, 2021

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is not present in population databases (ExAC no frequency). This variant has been observed in individual(s) with erythrocytosis (PMID: 24115288). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). 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. This sequence change replaces proline with alanine at codon 81 of the VHL protein (p.Pro81Ala). The proline residue is highly conserved and there is a small physicochemical difference between proline and alanine. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.52
BayesDel_addAF	Pathogenic	0.18	D
BayesDel_noAF	Uncertain	0.020
CADD	Uncertain	24
DANN	Uncertain	0.99
DEOGEN2	Pathogenic	0.93	D;.
Eigen	Benign	0.19
Eigen_PC	Uncertain	0.25
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Uncertain	0.86	D;T
M_CAP	Pathogenic	0.99	D
MetaRNN	Uncertain	0.69	D;D
MetaSVM	Pathogenic	1.0	D
MutationAssessor	Uncertain	2.0	M;M
PrimateAI	Pathogenic	0.88	D
PROVEAN	Uncertain	-3.4	D;D
REVEL	Pathogenic	0.79
Sift	Benign	0.051	.;T
Sift4G	Benign	0.63	T;T
Polyphen		0.68	P;D
Vest4		0.71
MutPred		0.70		Loss of stability (P = 0.0215);Loss of stability (P = 0.0215);
MVP		1.0
MPC		0.60
ClinPred		0.98	D
GERP RS		3.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.83
gMVP		0.91

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr3-10183772;