chr2-47800542-G-T
Variant summary
Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PS1_Very_StrongPM2PP5_Moderate
The NM_000179.3(MSH6):c.2559G>T(p.Lys853Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Likely pathogenic (★). Another nucleotide change resulting in same amino acid change has been previously reported as Likely pathogenicin ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. K853Q) has been classified as Uncertain significance.
Frequency
Consequence
NM_000179.3 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 12 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
MSH6 | NM_000179.3 | c.2559G>T | p.Lys853Asn | missense_variant | 4/10 | ENST00000234420.11 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
MSH6 | ENST00000234420.11 | c.2559G>T | p.Lys853Asn | missense_variant | 4/10 | 1 | NM_000179.3 | P4 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD4 exome Cov.: 34
GnomAD4 genome Cov.: 32
ClinVar
Submissions by phenotype
Hereditary cancer-predisposing syndrome Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | Ambry Genetics | Feb 25, 2021 | The p.K853N variant (also known as c.2559G>T), located in coding exon 4 of the MSH6 gene, results from a G to T substitution at nucleotide position 2559. The lysine at codon 853 is replaced by asparagine, an amino acid with similar properties. A different missense alteration (c.2559G>C) resulting in the same amino acid substitution co-segregated with disease in a family that met Amsterdam criteria for Lynch syndrome, and tumor results for several affected family members showed isolated loss of MSH6 expression on immunohistochemistry (IHC) (Ambry internal data). This variant was not reported in population-based cohorts in the Genome Aggregation Database (gnomAD). This amino acid position is highly conserved through reptiles but not in all available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Based on the majority of available evidence to date, this variant is likely to be pathogenic. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at
Publications
No publications associated with this variant yet.