7-117297719-T-C

Variant names:

• chr7-117297719-T-C
• NM_003391.3:c.746A>G

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_003391.3(WNT2):​c.746A>G​(p.Asp249Gly) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: WNT2 NM_003391.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 8.02
• Publications: 0 publications found

Genes affected

WNT2 (HGNC:12780): (Wnt family member 2) This gene is a member of the WNT gene family. The WNT gene family consists of structurally related genes which encode secreted signaling proteins. These proteins have been implicated in oncogenesis and in several developmental processes, including regulation of cell fate and patterning during embryogenesis. Alternatively spliced transcript variants have been identified for this gene. [provided by RefSeq, Jul 2008]

CFTR (HGNC:1884): (CF transmembrane conductance regulator) This gene encodes a member of the ATP-binding cassette (ABC) transporter superfamily. The encoded protein functions as a chloride channel, making it unique among members of this protein family, and controls ion and water secretion and absorption in epithelial tissues. Channel activation is mediated by cycles of regulatory domain phosphorylation, ATP-binding by the nucleotide-binding domains, and ATP hydrolysis. Mutations in this gene cause cystic fibrosis, the most common lethal genetic disorder in populations of Northern European descent. The most frequently occurring mutation in cystic fibrosis, DeltaF508, results in impaired folding and trafficking of the encoded protein. Multiple pseudogenes have been identified in the human genome. [provided by RefSeq, Aug 2017]

CFTR Gene-Disease associations (from GenCC):

• cystic fibrosis

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae), Myriad Women’s Health, Orphanet
• congenital bilateral absence of vas deferens

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• hereditary chronic pancreatitis

  Inheritance: AD Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

LOC124900596 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.31180713).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
WNT2	NM_003391.3	c.746A>G	p.Asp249Gly	missense_variant	Exon 4 of 5	ENST00000265441.8	NP_003382.1
WNT2	NR_024047.2	n.751A>G		non_coding_transcript_exon_variant	Exon 4 of 5
LOC124900596	XR_927898.3	n.83-671T>C		intron_variant	Intron 1 of 2
LOC124900596	XR_927899.3	n.40-671T>C		intron_variant	Intron 1 of 2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
WNT2	ENST00000265441.8	c.746A>G	p.Asp249Gly	missense_variant	Exon 4 of 5	1	NM_003391.3	ENSP00000265441.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Oct 16, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.746A>G (p.D249G) alteration is located in exon 4 (coding exon 4) of the WNT2 gene. This alteration results from a A to G substitution at nucleotide position 746, causing the aspartic acid (D) at amino acid position 249 to be replaced by a glycine (G). 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	0.26
BayesDel_addAF	Uncertain	0.032	T
BayesDel_noAF	Benign	-0.19
CADD	Uncertain	24
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.57	D
Eigen	Benign	0.030
Eigen_PC	Uncertain	0.24
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.88	D
M_CAP	Benign	0.025	D
MetaRNN	Benign	0.31	T
MetaSVM	Benign	-0.73	T
MutationAssessor	Benign	1.3	L
PhyloP100		8.0
PrimateAI	Pathogenic	0.82	D
PROVEAN	Benign	-1.6	N
REVEL	Benign	0.21
Sift	Benign	0.36	T
Sift4G	Benign	0.39	T
Polyphen		0.014	B
Vest4		0.52
MutPred		0.45		Gain of MoRF binding (P = 0.0586);
MVP		0.33
MPC		0.74
ClinPred		0.95	D
GERP RS		5.6
Varity_R		0.50
gMVP		0.45
Mutation Taster		=70/30	polymorphism

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

Other links and lift over

hg19: chr7-116937773;