rs761870581

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2BP4BS2

The NM_004655.4(AXIN2):​c.1988G>T​(p.Trp663Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000342 in 1,461,558 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. W663G) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)
Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

AXIN2
NM_004655.4 missense

Scores

1
2
15

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:4

Conservation

PhyloP100: 3.69

Publications

0 publications found
Variant links:
Genes affected
AXIN2 (HGNC:904): (axin 2) The Axin-related protein, Axin2, presumably plays an important role in the regulation of the stability of beta-catenin in the Wnt signaling pathway, like its rodent homologs, mouse conductin/rat axil. In mouse, conductin organizes a multiprotein complex of APC (adenomatous polyposis of the colon), beta-catenin, glycogen synthase kinase 3-beta, and conductin, which leads to the degradation of beta-catenin. Apparently, the deregulation of beta-catenin is an important event in the genesis of a number of malignancies. The AXIN2 gene has been mapped to 17q23-q24, a region that shows frequent loss of heterozygosity in breast cancer, neuroblastoma, and other tumors. Mutations in this gene have been associated with colorectal cancer with defective mismatch repair. [provided by RefSeq, Jul 2008]
AXIN2 Gene-Disease associations (from GenCC):
  • oligodontia-cancer predisposition syndrome
    Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Ambry Genetics, Orphanet, Labcorp Genetics (formerly Invitae)
  • tooth agenesis
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • craniosynostosis
    Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -3 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.2698261).
BS2
High AC in GnomAdExome4 at 5 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
AXIN2NM_004655.4 linkc.1988G>T p.Trp663Leu missense_variant Exon 8 of 11 ENST00000307078.10 NP_004646.3 Q9Y2T1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
AXIN2ENST00000307078.10 linkc.1988G>T p.Trp663Leu missense_variant Exon 8 of 11 1 NM_004655.4 ENSP00000302625.5 Q9Y2T1
AXIN2ENST00000375702.5 linkc.1793G>T p.Trp598Leu missense_variant Exon 6 of 9 1 ENSP00000364854.5 E7ES00
AXIN2ENST00000618960.4 linkc.1793G>T p.Trp598Leu missense_variant Exon 7 of 10 5 ENSP00000478916.1 E7ES00
AXIN2ENST00000578251.1 linkn.210G>T non_coding_transcript_exon_variant Exon 1 of 3 3

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD2 exomes
AF:
0.00000815
AC:
2
AN:
245544
AF XY:
0.00
show subpopulations
Gnomad AFR exome
AF:
0.0000635
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00000919
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000342
AC:
5
AN:
1461558
Hom.:
0
Cov.:
33
AF XY:
0.00000413
AC XY:
3
AN XY:
727080
show subpopulations
African (AFR)
AF:
0.0000299
AC:
1
AN:
33480
American (AMR)
AF:
0.00
AC:
0
AN:
44724
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26132
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39700
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86258
European-Finnish (FIN)
AF:
0.0000376
AC:
2
AN:
53132
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5768
European-Non Finnish (NFE)
AF:
0.00000180
AC:
2
AN:
1111978
Other (OTH)
AF:
0.00
AC:
0
AN:
60386
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.485
Heterozygous variant carriers
0
1
2
3
4
5
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
Cov.:
33
ExAC
AF:
0.0000165
AC:
2

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:4
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Uncertain:2
Mar 24, 2023
GeneDx
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge; This variant is associated with the following publications: (PMID: 15735151) -

-
Breakthrough Genomics, Breakthrough Genomics
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:not provided

- -

Oligodontia-cancer predisposition syndrome Uncertain:1
Nov 13, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change replaces tryptophan, which is neutral and slightly polar, with leucine, which is neutral and non-polar, at codon 663 of the AXIN2 protein (p.Trp663Leu). This variant is present in population databases (rs761870581, gnomAD 0.007%). This variant has not been reported in the literature in individuals affected with AXIN2-related conditions. ClinVar contains an entry for this variant (Variation ID: 576554). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt AXIN2 protein function with a negative predictive value of 80%. 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. -

Hereditary cancer-predisposing syndrome Uncertain:1
Jun 01, 2025
Ambry Genetics
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

The p.W663L variant (also known as c.1988G>T), located in coding exon 7 of the AXIN2 gene, results from a G to T substitution at nucleotide position 1988. The tryptophan at codon 663 is replaced by leucine, an amino acid with similar properties. This amino acid position is conserved. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.13
BayesDel_addAF
Benign
-0.15
T
BayesDel_noAF
Benign
-0.28
CADD
Benign
19
DANN
Benign
0.94
DEOGEN2
Uncertain
0.46
.;T;T
Eigen
Benign
-0.17
Eigen_PC
Benign
-0.047
FATHMM_MKL
Uncertain
0.90
D
LIST_S2
Benign
0.67
.;T;.
M_CAP
Benign
0.048
D
MetaRNN
Benign
0.27
T;T;T
MetaSVM
Benign
-0.88
T
PhyloP100
3.7
PrimateAI
Benign
0.48
T
PROVEAN
Pathogenic
-4.7
D;.;D
REVEL
Benign
0.16
Sift
Benign
0.27
T;.;T
Sift4G
Benign
0.24
T;T;T
Polyphen
0.0010
.;B;B
Vest4
0.44
MutPred
0.44
Loss of MoRF binding (P = 0.0361);.;.;
MVP
0.49
MPC
0.32
ClinPred
0.74
D
GERP RS
3.4
gMVP
0.20
Mutation Taster
=90/10
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

Publications

Other links and lift over

dbSNP: rs761870581; hg19: chr17-63532591; API