dbSNP rs950007141: AXIN2:p.Ser475Leu (chr17-65537612-G-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_004655.4(AXIN2):c.1424C>T(p.Ser475Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000691 in 1,446,942 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

AXIN2
NM_004655.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: -0.145

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 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.032778025).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AXIN2	NM_004655.4 link	c.1424C>T	p.Ser475Leu	missense_variant	Exon 6 of 11	ENST00000307078.10	NP_004646.3	Q9Y2T1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
AXIN2	ENST00000307078.10 link	c.1424C>T	p.Ser475Leu	missense_variant	Exon 6 of 11	1	NM_004655.4	ENSP00000302625.5	Q9Y2T1
AXIN2	ENST00000375702.5 link	c.1424C>T	p.Ser475Leu	missense_variant	Exon 5 of 9	1		ENSP00000364854.5	E7ES00
AXIN2	ENST00000618960.4 link	c.1424C>T	p.Ser475Leu	missense_variant	Exon 6 of 10	5		ENSP00000478916.1	E7ES00

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.91e-7

AC:

AN:

1446942

Hom.:

Cov.:

AF XY:

0.00000139

AC XY:

AN XY:

718718

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000167

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Oligodontia-cancer predisposition syndrome

Uncertain:1

Oct 22, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces serine, which is neutral and polar, with leucine, which is neutral and non-polar, at codon 475 of the AXIN2 protein (p.Ser475Leu). This variant is not present in population databases (gnomAD no frequency). 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: 533152). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Not Available"; PolyPhen-2: "Benign"; Align-GVGD: "Not Available". The leucine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. 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. -

not provided

Uncertain:1

Oct 24, 2024

Quest Diagnostics Nichols Institute San Juan Capistrano

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The AXIN2 c.1424C>T (p.Ser475Leu) variant has not been reported in individuals with AXIN2-related conditions in the published literature. It also has not been reported in large, multi-ethnic general populations (Genome Aggregation Database, http://gnomad.broadinstitute.org). Analysis of this variant using bioinformatics tools for the prediction of the effect of amino acid changes on protein structure and function yielded predictions that this variant is benign. Based on the available information, we are unable to determine the clinical significance of this variant. -

Hereditary cancer-predisposing syndrome

Uncertain:1

Mar 17, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.S475L variant (also known as c.1424C>T), located in coding exon 5 of the AXIN2 gene, results from a C to T substitution at nucleotide position 1424. The serine at codon 475 is replaced by leucine, an amino acid with dissimilar 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

0.073

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.57

CADD

Benign

5.1

DANN

Benign

0.92

DEOGEN2

Benign

0.25

.;T;T

Eigen

Benign

-1.4

Eigen_PC

Benign

-1.4

FATHMM_MKL

Benign

0.10

LIST_S2

Benign

0.48

.;T;.

M_CAP

Benign

0.019

MetaRNN

Benign

0.033

T;T;T

MetaSVM

Benign

-1.0

PrimateAI

Benign

0.48

PROVEAN

Benign

-0.040

N;.;N

REVEL

Benign

0.063

Sift

Benign

0.63

T;.;T

Sift4G

Benign

0.21

T;T;T

Polyphen

0.0

.;B;B

Vest4

0.14

MutPred

0.20

Loss of phosphorylation at S475 (P = 0.0579);Loss of phosphorylation at S475 (P = 0.0579);Loss of phosphorylation at S475 (P = 0.0579);

MVP

0.13

MPC

0.15

ClinPred

0.036

GERP RS

-3.5

gMVP

0.10

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over