chr17-65536430-G-T

Variant names:

• chr17-65536430-G-T
• rs1555577104
• NM_004655.4:c.2031C>A

Variant summary

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

The NM_004655.4(AXIN2):​c.2031C>A​(p.His677Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★★). Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. H677Y) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 33)
• Consequence: AXIN2 NM_004655.4 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 1.82
• Publications: 0 publications found

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: Ambry Genetics, ClinGen, Orphanet, Labcorp Genetics (formerly Invitae)
• tooth agenesis

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• craniosynostosis

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

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

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004655.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	AXIN2	NM_004655.4	MANE Select	c.2031C>A	p.His677Gln	missense	Exon 8 of 11	NP_004646.3	Q9Y2T1
	AXIN2	NM_001363813.1		c.1836C>A	p.His612Gln	missense	Exon 7 of 10	NP_001350742.1	E7ES00

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	AXIN2	ENST00000307078.10	TSL:1 MANE Select	c.2031C>A	p.His677Gln	missense	Exon 8 of 11	ENSP00000302625.5	Q9Y2T1
	AXIN2	ENST00000375702.5	TSL:1	c.1836C>A	p.His612Gln	missense	Exon 6 of 9	ENSP00000364854.5	E7ES00
	AXIN2	ENST00000881031.1		c.2031C>A	p.His677Gln	missense	Exon 8 of 11	ENSP00000551090.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 33

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	Hereditary cancer-predisposing syndrome (1)
-	1	-	Oligodontia-cancer predisposition syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Uncertain	0.069	T
BayesDel_noAF	Benign	-0.14
CADD	Benign	14
DANN	Uncertain	0.98
DEOGEN2	Benign	0.38	T
Eigen	Benign	-0.077
Eigen_PC	Benign	0.029
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Benign	0.61	T
M_CAP	Benign	0.026	D
MetaRNN	Uncertain	0.43	T
MetaSVM	Benign	-0.86	T
PhyloP100		1.8
PrimateAI	Uncertain	0.53	T
PROVEAN	Uncertain	-3.4	D
REVEL	Benign	0.18
Sift	Benign	0.16	T
Sift4G	Benign	0.25	T
Polyphen		0.31	B
Vest4		0.83
MutPred		0.40		Loss of methylation at R675 (P = 0.058)
MVP		0.74
MPC		0.27
ClinPred		0.56	D
GERP RS		3.1
gMVP		0.35
Mutation Taster		=62/38	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

dbSNP: rs1555577104; hg19: chr17-63532548;