rs1553333718
Variant summary
Our verdict is Uncertain significance. Variant got 0 ACMG points: 0P and 0B.
The NM_000179.3(MSH6):c.3969_4001+52dupTGAGAAGATGAATCAGTCACTACGATTATTTCGGTAACTAACTAACTATAATGGAATTATAACTAACTGACCTTAAGTTTCAAAG variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000192 in 1,460,330 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Consequence
NM_000179.3 intron
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 0 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.00 AC: 5AN: 152024Hom.: 0 Cov.: 32 FAILED QC
GnomAD4 exome AF: 0.0000192 AC: 28AN: 1460330Hom.: 0 Cov.: 35 AF XY: 0.0000151 AC XY: 11AN XY: 726476
GnomAD4 genome Data not reliable, filtered out with message: AS_VQSR AF: 0.0000329 AC: 5AN: 152024Hom.: 0 Cov.: 32 AF XY: 0.0000404 AC XY: 3AN XY: 74256
ClinVar
Submissions by phenotype
Hereditary cancer-predisposing syndrome Uncertain:1Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Ambry Genetics | Dec 18, 2020 | This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. - |
Uncertain significance, criteria provided, single submitter | clinical testing | Color Diagnostics, LLC DBA Color Health | Feb 09, 2023 | This variant creates an in-tandem duplication, encompassing the last 33 nucleotides of exon 9 and the first 52 nucleotides of intron 9 in the MSH6 gene. While this duplication does not directly disrupt the coding sequence of this gene, it creates a duplicate intron 9 splice donor site. To our knowledge, functional studies have not been reported for this variant. A similar duplication (c.3969_4001+51dup) has been reported in an individual affected with colorectal cancer whose tumor exhibited mismatch repair deficient characteristics (PMID: 14871975). This variant has not been identified in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. - |
Lynch syndrome Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Aug 25, 2015 | This sequence change is a tandem duplication of 85 nucleotides in exon 9 of the MSH6 mRNA (c.3969_4001+52dup). This duplication includes the 3' end of exon 9. The impact of this duplication on both MSH6 mRNA processing and protein function is unknown. This variant is not present in population databases and has not been reported in the literature. Algorithms developed to predict the effect of nucleotide changes on mRNA splicing suggest that while this duplication is not predicted to alter the consensus splice site in intron 9, it is predicted to create 2 novel splice sites downstream of the consensus splice site that if used, will create premature translation stop codon that resulting in a truncated MSH6 protein. In the absence of transcriptional studies, it is not known if these additional site actually impact MSH6 mRNA. In summary, this is a novel variant with uncertain impact on splicing. It has been classified as a Variant of Uncertain Significance. - |
Hereditary nonpolyposis colorectal neoplasms Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Aug 25, 2015 | In summary, this is a novel variant with uncertain impact on splicing. It has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of nucleotide changes on mRNA splicing suggest that while this duplication is not predicted to alter the consensus splice site in intron 9, it is predicted to create 2 novel splice sites downstream of the consensus splice site that if used, will create premature translation stop codon that resulting in a truncated MSH6 protein. In the absence of transcriptional studies, it is not known if these additional site actually impact MSH6 mRNA. This variant is not present in population databases and has not been reported in the literature. This sequence change is a tandem duplication of 85 nucleotides in exon 9 of the MSH6 mRNA (c.3969_4001+52dup). This duplication includes the 3' end of exon 9. The impact of this duplication on both MSH6 mRNA processing and protein function is unknown. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at