rs777283610
Variant summary
Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2
The NM_004655.4(AXIN2):c.1391C>T(p.Ser464Phe) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000019 in 1,578,020 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. S464P) has been classified as Uncertain significance.
Frequency
Consequence
NM_004655.4 missense
Scores
Clinical Significance
Conservation
Publications
- oligodontia-cancer predisposition syndromeInheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Ambry Genetics, Orphanet, Labcorp Genetics (formerly Invitae)
- tooth agenesisInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- craniosynostosisInheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
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ACMG classification
Our verdict: Uncertain_significance. The variant received 2 ACMG points.
Transcripts
RefSeq
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| AXIN2 | ENST00000307078.10 | c.1391C>T | p.Ser464Phe | missense_variant | Exon 6 of 11 | 1 | NM_004655.4 | ENSP00000302625.5 | ||
| AXIN2 | ENST00000375702.5 | c.1391C>T | p.Ser464Phe | missense_variant | Exon 5 of 9 | 1 | ENSP00000364854.5 | |||
| AXIN2 | ENST00000618960.4 | c.1391C>T | p.Ser464Phe | missense_variant | Exon 6 of 10 | 5 | ENSP00000478916.1 |
Frequencies
GnomAD3 genomes AF: 0.00000658 AC: 1AN: 152000Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.00 AC: 0AN: 189242 AF XY: 0.00
GnomAD4 exome AF: 0.00000140 AC: 2AN: 1426020Hom.: 0 Cov.: 37 AF XY: 0.00000142 AC XY: 1AN XY: 706612 show subpopulations
GnomAD4 genome AF: 0.00000658 AC: 1AN: 152000Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 74212 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
Oligodontia-cancer predisposition syndrome Uncertain:1
This sequence change replaces serine, which is neutral and polar, with phenylalanine, which is neutral and non-polar, at codon 464 of the AXIN2 protein (p.Ser464Phe). 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: 567170). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is expected to disrupt AXIN2 protein function with a positive predictive value of 80%. 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
The p.S464F variant (also known as c.1391C>T), located in coding exon 5 of the AXIN2 gene, results from a C to T substitution at nucleotide position 1391. The serine at codon 464 is replaced by phenylalanine, an amino acid with highly dissimilar properties. This amino acid position is not well conserved in available vertebrate species. 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:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at