17-65537614-ATGGTGGTGG-ATGG

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_004655.4(AXIN2):c.1416_1421delCCACCA(p.His473_His474del) variant causes a disruptive inframe deletion change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000659 in 151,676 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. H472H) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

AXIN2
NM_004655.4 disruptive_inframe_deletion

Scores

Not classified

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 1.77

Publications

5 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

AXIN2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AXIN2	NM_004655.4 link	c.1416_1421delCCACCA	p.His473_His474del	disruptive_inframe_deletion	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.1416_1421delCCACCA	p.His473_His474del	disruptive_inframe_deletion	Exon 6 of 11	1	NM_004655.4	ENSP00000302625.5	Q9Y2T1
AXIN2	ENST00000375702.5 link	c.1416_1421delCCACCA	p.His473_His474del	disruptive_inframe_deletion	Exon 5 of 9	1		ENSP00000364854.5	E7ES00
AXIN2	ENST00000618960.4 link	c.1416_1421delCCACCA	p.His473_His474del	disruptive_inframe_deletion	Exon 6 of 10	5		ENSP00000478916.1	E7ES00

Frequencies

GnomAD3 genomes

AF:

0.00000659

AC:

AN:

151676

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

1428868

Hom.:

AF XY:

0.00

AC XY:

AN XY:

709634

African (AFR)

AF:

0.00

AC:

AN:

33162

American (AMR)

AF:

0.00

AC:

AN:

41244

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25426

East Asian (EAS)

AF:

0.00

AC:

AN:

39166

South Asian (SAS)

AF:

0.00

AC:

AN:

84202

European-Finnish (FIN)

AF:

0.00

AC:

AN:

47816

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5552

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1093058

Other (OTH)

AF:

0.00

AC:

AN:

59242

GnomAD4 genome

AF:

0.00000659

AC:

AN:

151676

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74024

show subpopulations

African (AFR)

AF:

0.0000242

AC:

AN:

41320

American (AMR)

AF:

0.00

AC:

AN:

15248

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3462

East Asian (EAS)

AF:

0.00

AC:

AN:

5072

South Asian (SAS)

AF:

0.00

AC:

AN:

4802

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10542

Middle Eastern (MID)

AF:

0.00

AC:

AN:

312

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67912

Other (OTH)

AF:

0.00

AC:

AN:

2094

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.575

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00

Hom.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Oligodontia-cancer predisposition syndrome

Uncertain:1

Sep 17, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant, c.1416_1421del, results in the deletion of 2 amino acid(s) of the AXIN2 protein (p.His473_His474del), but otherwise preserves the integrity of the reading frame. 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: 1772122). Experimental studies and prediction algorithms are not available or were not evaluated, and the functional significance of this variant is currently unknown. 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

Jan 03, 2022

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.1416_1421delCCACCA variant (also known as p.H473_H474del) is located in coding exon 5 of the AXIN2 gene. This variant results from an in-frame CCACCA deletion at nucleotide positions 1416 to 1421. This results in the in-frame deletion of 2 histidine residues at codons 473 and 474. These amino acid positions are not well conserved in available vertebrate species. In addition, this alteration is predicted to be neutral by in silico analysis (Choi Y et al. PLoS ONE. 2012; 7(10):e46688). 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

PhyloP100

1.8

Mutation Taster

=166/34

polymorphism

(source)

Splicing

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over