17-65535647-T-C

Position:

chr17-65535647-T-C

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_StrongBP6BS2

The NM_004655.4(AXIN2):c.2216A>G(p.Asn739Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000328 in 1,614,128 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 Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000031 ( 0 hom. )

Consequence

AXIN2
NM_004655.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:5B:2

Conservation

PhyloP100: -0.901

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:

AXIN2 (HGNC:):

AXIN2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.020089954).

BP6

Variant 17-65535647-T-C is Benign according to our data. Variant chr17-65535647-T-C is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 408802.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=4, Benign=1}. Variant chr17-65535647-T-C is described in Lovd as [Likely_benign].

BS2

High AC in GnomAd4 at 8 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
AXIN2	NM_004655.4 linkuse as main transcript	c.2216A>G	p.Asn739Ser	missense_variant	9/11	ENST00000307078.10	NP_004646.3	Q9Y2T1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
AXIN2	ENST00000307078.10 linkuse as main transcript	c.2216A>G	p.Asn739Ser	missense_variant	9/11	1	NM_004655.4	ENSP00000302625.5	Q9Y2T1
AXIN2	ENST00000375702.5 linkuse as main transcript	c.2021A>G	p.Asn674Ser	missense_variant	7/9	1		ENSP00000364854.5	E7ES00
AXIN2	ENST00000618960.4 linkuse as main transcript	c.2021A>G	p.Asn674Ser	missense_variant	8/10	5		ENSP00000478916.1	E7ES00
AXIN2	ENST00000578251.1 linkuse as main transcript	n.438A>G		non_coding_transcript_exon_variant	2/3	3

Frequencies

GnomAD3 genomes

AF:

0.0000592

AC:

AN:

152150

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.000829

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000239

AC:

AN:

251436

Hom.:

AF XY:

0.0000294

AC XY:

AN XY:

135902

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000980

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000879

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000308

AC:

AN:

1461860

Hom.:

Cov.:

AF XY:

0.0000371

AC XY:

AN XY:

727240

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.000115

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000464

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000333

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000525

AC:

AN:

152268

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74452

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.000622

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000494

Hom.:

Bravo

AF:

0.0000453

ExAC

AF:

0.0000247

AC:

Asia WGS

AF:

0.000866

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:5Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Quest Diagnostics Nichols Institute San Juan Capistrano	Dec 12, 2023	The AXIN2 c.2216A>G (p.Asn739Ser) variant has not been reported in individuals with AXIN2-related conditions in the published literature. The frequency of this variant in the general population, 0.000098 (3/30612 chromosomes in South Asian subpopulation (Genome Aggregation Database, http://gnomad.broadinstitute.org)), is higher than would generally be expected for pathogenic variants in this gene. 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. -
Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Mar 06, 2023	In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Hereditary cancer-predisposing syndrome

Benign:2

Benign, criteria provided, single submitter	clinical testing	Ambry Genetics	May 20, 2024	This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -
Likely benign, criteria provided, single submitter	curation	Sema4, Sema4	May 06, 2021	- -

Oligodontia-cancer predisposition syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 27, 2024

This sequence change replaces asparagine, which is neutral and polar, with serine, which is neutral and polar, at codon 739 of the AXIN2 protein (p.Asn739Ser). This variant is present in population databases (rs547630327, gnomAD 0.01%). 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: 408802). 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 serine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. RNA analysis performed to evaluate the impact of this missense change on mRNA splicing indicates it does not significantly alter splicing (Invitae). 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. -

Carcinoma of colon;C1837750:Oligodontia-cancer predisposition syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Oct 31, 2018

- -

AXIN2-related disorder

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Oct 11, 2023

The AXIN2 c.2216A>G variant is predicted to result in the amino acid substitution p.Asn739Ser. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.0098% of alleles in individuals of South Asian descent in gnomAD (http://gnomad.broadinstitute.org/variant/17-63531765-T-C). It has conflicting interpretations of likely benign and uncertain significance (https://preview.ncbi.nlm.nih.gov/clinvar/variation/408802/). At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.050

BayesDel_addAF

Benign

-0.48

BayesDel_noAF

Benign

-0.72

CADD

Benign

0.0020

DANN

Benign

0.56

DEOGEN2

Benign

0.24

.;T;T

Eigen

Benign

-2.0

Eigen_PC

Benign

-2.1

FATHMM_MKL

Benign

0.064

LIST_S2

Benign

0.31

.;T;.

M_CAP

Benign

0.011

MetaRNN

Benign

0.020

T;T;T

MetaSVM

Benign

-1.1

PrimateAI

Benign

0.27

PROVEAN

Benign

-0.33

N;.;N

REVEL

Benign

0.051

Sift

Benign

0.80

T;.;T

Sift4G

Benign

0.82

T;T;T

Polyphen

0.0010

.;B;B

Vest4

0.099

MutPred

0.17

Gain of glycosylation at N739 (P = 0.0219);.;.;

MVP

0.27

MPC

0.14

ClinPred

0.025

GERP RS

-11

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

gMVP

0.094

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

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