chr17-65541471-G-A

Variant names:

• chr17-65541471-G-A
• rs779669781
• NM_004655.4:c.1043C>T

Variant summary

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

The NM_004655.4(AXIN2):​c.1043C>T​(p.Ser348Phe) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,726 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S348P) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: AXIN2 NM_004655.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 6.55
• 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: 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

ENSG00000266076 (HGNC:):

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

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	AXIN2	NM_004655.4	MANE Select	c.1043C>T	p.Ser348Phe	missense	Exon 4 of 11	NP_004646.3
	AXIN2	NM_001363813.1		c.1043C>T	p.Ser348Phe	missense	Exon 4 of 10	NP_001350742.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	AXIN2	ENST00000307078.10	TSL:1 MANE Select	c.1043C>T	p.Ser348Phe	missense	Exon 4 of 11	ENSP00000302625.5
	AXIN2	ENST00000375702.5	TSL:1	c.1043C>T	p.Ser348Phe	missense	Exon 3 of 9	ENSP00000364854.5
	ENSG00000266076	ENST00000577662.1	TSL:2	n.*1219C>T		non_coding_transcript_exon	Exon 6 of 7	ENSP00000462418.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461726 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 727190

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39696

South Asian (SAS) AF: 0.00 AC: 0 AN: 86252

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53418

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111860

Other (OTH) AF: 0.00 AC: 0 AN: 60394

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.19
BayesDel_addAF	Uncertain	0.15	D
BayesDel_noAF	Uncertain	-0.030
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Benign	0.37	T
Eigen	Uncertain	0.56
Eigen_PC	Uncertain	0.53
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Pathogenic	0.98	D
M_CAP	Uncertain	0.20	D
MetaRNN	Uncertain	0.52	D
MetaSVM	Uncertain	0.47	D
PhyloP100		6.5
PrimateAI	Uncertain	0.67	T
PROVEAN	Uncertain	-3.3	D
REVEL	Uncertain	0.60
Sift	Uncertain	0.021	D
Sift4G	Uncertain	0.043	D
Polyphen		1.0	D
Vest4		0.57
MutPred		0.36		Loss of disorder (P = 0.0093)
MVP		0.72
MPC		0.69
ClinPred		0.99	D
GERP RS		4.0
gMVP		0.29
Mutation Taster		=55/45	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: rs779669781; hg19: chr17-63537589;