7-49775585-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_198570.5(VWC2):c.150C>A(p.His50Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 12/21 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)
• Consequence: VWC2 NM_198570.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.65

Genes affected

VWC2 (HGNC:30200): (von Willebrand factor C domain containing 2) This gene encodes a secreted bone morphogenic protein antagonist. The encoded protein is possibly involved in neural function and development and may have a role in cell adhesion.[provided by RefSeq, Oct 2009]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.11796436).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
VWC2	NM_198570.5	c.150C>A	p.His50Gln	missense_variant	2/4	ENST00000340652.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
VWC2	ENST00000340652.5	c.150C>A	p.His50Gln	missense_variant	2/4	1	NM_198570.5	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 44

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 20, 2021

The c.150C>A (p.H50Q) alteration is located in exon 2 (coding exon 1) of the VWC2 gene. This alteration results from a C to A substitution at nucleotide position 150, causing the histidine (H) at amino acid position 50 to be replaced by a glutamine (Q). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Benign	-0.14	T
BayesDel_noAF	Benign	-0.44
Cadd	Benign	20
Dann	Uncertain	0.98
DEOGEN2	Benign	0.0063	T
Eigen	Benign	-0.037
Eigen_PC	Benign	0.11
FATHMM_MKL	Benign	0.65	D
LIST_S2	Benign	0.56	T
M_CAP	Uncertain	0.094	D
MetaRNN	Benign	0.12	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.90	L
MutationTaster	Benign	0.98	N
PrimateAI	Pathogenic	0.89	D
PROVEAN	Benign	-1.2	N
REVEL	Benign	0.052
Sift	Benign	0.15	T
Sift4G	Uncertain	0.0090	D
Polyphen		0.31	B
Vest4		0.43
MutPred		0.17		Gain of helix (P = 0.062);
MVP		0.043
MPC		1.6
ClinPred		0.80	D
GERP RS		4.8
Varity_R		0.16
gMVP		0.21

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: chr7-49815181;