rs1360433499
Variant summary
Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2
The NM_004655.4(AXIN2):c.1191G>C(p.Gln397His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,876 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Q397R) has been classified as Likely benign.
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.1191G>C | p.Gln397His | missense_variant | Exon 5 of 11 | 1 | NM_004655.4 | ENSP00000302625.5 | ||
| ENSG00000266076 | ENST00000577662.1 | n.*1367G>C | non_coding_transcript_exon_variant | Exon 7 of 7 | 2 | ENSP00000462418.1 | ||||
| ENSG00000266076 | ENST00000577662.1 | n.*1367G>C | 3_prime_UTR_variant | Exon 7 of 7 | 2 | ENSP00000462418.1 |
Frequencies
GnomAD3 genomes Cov.: 34
GnomAD4 exome AF: 0.00000205 AC: 3AN: 1461876Hom.: 0 Cov.: 38 AF XY: 0.00000138 AC XY: 1AN XY: 727242 show subpopulations
Age Distribution
GnomAD4 genome Cov.: 34
ClinVar
Submissions by phenotype
Oligodontia-cancer predisposition syndrome Uncertain:1
This sequence change replaces glutamine, which is neutral and polar, with histidine, which is basic and polar, at codon 397 of the AXIN2 protein (p.Gln397His). 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: 1350994). 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 not expected to disrupt AXIN2 protein function with a negative 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.Q397H variant (also known as c.1191G>C), located in coding exon 4 of the AXIN2 gene, results from a G to C substitution at nucleotide position 1191. The glutamine at codon 397 is replaced by histidine, an amino acid with highly similar properties. This amino acid position is well conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. 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