rs749518336
Variant summary
Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2PP3_Strong
The NM_006361.6(HOXB13):c.650G>T(p.Arg217Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000137 in 1,611,456 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 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. R217C) has been classified as Uncertain significance.
Frequency
Consequence
NM_006361.6 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_pathogenic. Variant got 6 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
HOXB13 | NM_006361.6 | c.650G>T | p.Arg217Leu | missense_variant | 2/2 | ENST00000290295.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
HOXB13 | ENST00000290295.8 | c.650G>T | p.Arg217Leu | missense_variant | 2/2 | 1 | NM_006361.6 | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.0000197 AC: 3AN: 152104Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.0000481 AC: 12AN: 249302Hom.: 0 AF XY: 0.0000296 AC XY: 4AN XY: 134986
GnomAD4 exome AF: 0.0000130 AC: 19AN: 1459352Hom.: 0 Cov.: 31 AF XY: 0.0000110 AC XY: 8AN XY: 726108
GnomAD4 genome ? AF: 0.0000197 AC: 3AN: 152104Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1AN XY: 74284
ClinVar
Submissions by phenotype
not provided Uncertain:2
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Dec 29, 2023 | This sequence change replaces arginine, which is basic and polar, with leucine, which is neutral and non-polar, at codon 217 of the HOXB13 protein (p.Arg217Leu). This variant is present in population databases (rs749518336, gnomAD 0.03%). This variant has not been reported in the literature in individuals affected with HOXB13-related conditions. ClinVar contains an entry for this variant (Variation ID: 483510). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt HOXB13 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. - |
Uncertain significance, criteria provided, single submitter | clinical testing | GeneDx | Aug 09, 2023 | In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; Has not been previously published as pathogenic or benign to our knowledge; This variant is associated with the following publications: (PMID: 28072499, 19389631, 8756292) - |
Hereditary cancer-predisposing syndrome Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Jan 19, 2024 | The p.R217L variant (also known as c.650G>T), located in coding exon 2 of the HOXB13 gene, results from a G to T substitution at nucleotide position 650. The arginine at codon 217 is replaced by leucine, an amino acid with dissimilar properties. This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious 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