chr13-41080708-G-T

Position:

• chr13-41080708-G-T

Variant summary

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

The NM_007187.5(WBP4):​c.819G>T​(p.Gln273His) 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. 15/20 in silico tools predict a benign outcome for this variant. 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. Q273E) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 31)
• Consequence: WBP4 NM_007187.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.196

Genes affected

WBP4 (HGNC:12739): (WW domain binding protein 4) This gene encodes WW domain-containing binding protein 4. The WW domain represents a small and compact globular structure that interacts with proline-rich ligands. This encoded protein is a general spliceosomal protein that may play a role in cross-intron bridging of U1 and U2 snRNPs in the spliceosomal complex A. [provided by RefSeq, Jul 2008]

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=0.1128903).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
WBP4	NM_007187.5	c.819G>T	p.Gln273His	missense_variant	9/10	ENST00000379487.5
WBP4	XM_005266245.3	c.912G>T	p.Gln304His	missense_variant	9/10
WBP4	XM_047430071.1	c.351G>T	p.Gln117His	missense_variant	4/5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
WBP4	ENST00000379487.5	c.819G>T	p.Gln273His	missense_variant	9/10	1	NM_007187.5	P1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 31

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

May 13, 2022

The c.819G>T (p.Q273H) alteration is located in exon 9 (coding exon 9) of the WBP4 gene. This alteration results from a G to T substitution at nucleotide position 819, causing the glutamine (Q) at amino acid position 273 to be replaced by a histidine (H). 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	0.11
BayesDel_addAF	Benign	-0.21	T
BayesDel_noAF	Benign	-0.54
CADD	Benign	7.1
DANN	Benign	0.94
DEOGEN2	Benign	0.025	T
Eigen	Benign	-0.73
Eigen_PC	Benign	-0.86
FATHMM_MKL	Benign	0.042	N
LIST_S2	Benign	0.64	T
M_CAP	Benign	0.0079	T
MetaRNN	Benign	0.11	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.8	L
MutationTaster	Benign	1.0	N;N
PrimateAI	Benign	0.30	T
PROVEAN	Benign	-1.6	N
REVEL	Benign	0.046
Sift	Benign	0.069	T
Polyphen		0.88	P
Vest4		0.20
MutPred		0.16		Loss of helix (P = 0.0558);
MVP		0.28
MPC		0.054
ClinPred		0.11	T
GERP RS		-1.7
Varity_R		0.043
gMVP		0.17

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: chr13-41654844;