rs864622216
Variant summary
Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2
The NM_000179.3(MSH6):āc.396G>Cā(p.Gln132His) variant causes a missense change. The variant allele was found at a frequency of 0.00000657 in 152,194 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (ā ā ). Another nucleotide change resulting in same amino acid change has been previously reported as Uncertain significancein ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Q132E) has been classified as Uncertain significance.
Frequency
Consequence
NM_000179.3 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 2 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
MSH6 | NM_000179.3 | c.396G>C | p.Gln132His | missense_variant | 2/10 | ENST00000234420.11 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
MSH6 | ENST00000234420.11 | c.396G>C | p.Gln132His | missense_variant | 2/10 | 1 | NM_000179.3 | P4 |
Frequencies
GnomAD3 genomes ? AF: 0.00000657 AC: 1AN: 152194Hom.: 0 Cov.: 33
GnomAD4 exome Cov.: 33
GnomAD4 genome ? AF: 0.00000657 AC: 1AN: 152194Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0AN XY: 74360
ClinVar
Submissions by phenotype
Hereditary nonpolyposis colorectal neoplasms Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Jan 07, 2024 | This sequence change replaces glutamine, which is neutral and polar, with histidine, which is basic and polar, at codon 132 of the MSH6 protein (p.Gln132His). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with MSH6-related conditions. ClinVar contains an entry for this variant (Variation ID: 219706). 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 not expected to disrupt MSH6 protein function with a negative predictive value of 95%. 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
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Aug 31, 2023 | The p.Q132H variant (also known as c.396G>C), located in coding exon 2 of the MSH6 gene, results from a G to C substitution at nucleotide position 396. The glutamine at codon 132 is replaced by histidine, an amino acid with highly similar properties. This amino acid position is 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