3-37008876-A-G
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Variant summary
Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_StrongBP6BP7
The NM_000249.4(MLH1):āc.516A>Gā(p.Glu172=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000554 in 1,461,820 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Genomes: not found (cov: 31)
Exomes š: 0.000055 ( 0 hom. )
Consequence
MLH1
NM_000249.4 synonymous
NM_000249.4 synonymous
Scores
2
Clinical Significance
Conservation
PhyloP100: 1.63
Genes affected
MLH1 (HGNC:7127): (mutL homolog 1) The protein encoded by this gene can heterodimerize with mismatch repair endonuclease PMS2 to form MutL alpha, part of the DNA mismatch repair system. When MutL alpha is bound by MutS beta and some accessory proteins, the PMS2 subunit of MutL alpha introduces a single-strand break near DNA mismatches, providing an entry point for exonuclease degradation. The encoded protein is also involved in DNA damage signaling and can heterodimerize with DNA mismatch repair protein MLH3 to form MutL gamma, which is involved in meiosis. This gene was identified as a locus frequently mutated in hereditary nonpolyposis colon cancer (HNPCC). [provided by RefSeq, Aug 2017]
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ACMG classification
Classification made for transcript
Verdict is Likely_benign. Variant got -6 ACMG points.
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.54).
BP6
Variant 3-37008876-A-G is Benign according to our data. Variant chr3-37008876-A-G is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 479709.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=6, Uncertain_significance=1}.
BP7
Synonymous conserved (PhyloP=1.63 with no splicing effect.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
MLH1 | NM_000249.4 | c.516A>G | p.Glu172= | synonymous_variant | 6/19 | ENST00000231790.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
MLH1 | ENST00000231790.8 | c.516A>G | p.Glu172= | synonymous_variant | 6/19 | 1 | NM_000249.4 | P1 |
Frequencies
GnomAD3 genomes Cov.: 31
GnomAD3 genomes
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GnomAD3 exomes AF: 0.00000398 AC: 1AN: 251454Hom.: 0 AF XY: 0.00000736 AC XY: 1AN XY: 135896
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GnomAD4 exome AF: 0.0000554 AC: 81AN: 1461820Hom.: 0 Cov.: 31 AF XY: 0.0000591 AC XY: 43AN XY: 727212
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GnomAD4 genome Cov.: 31
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ClinVar
Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:1Benign:6
Revision: criteria provided, conflicting classifications
LINK: link
Submissions by phenotype
not provided Uncertain:1Benign:1
Likely benign, criteria provided, single submitter | clinical testing | GeneDx | Mar 09, 2021 | - - |
Uncertain significance, criteria provided, single submitter | clinical testing | Quest Diagnostics Nichols Institute San Juan Capistrano | Sep 30, 2022 | To the best of our knowledge, the variant has not been reported in individuals with MLH1-related conditions in the published literature. The frequency of this variant in the general population, 0.000004 (1/251454 chromosomes, http://gnomad.broadinstitute.org), is uninformative in assessment of its pathogenicity. Analysis of this variant using software algorithms for the prediction of the effect of nucleotide changes on splicing yielded predictions that this variant does not affect MLH1 mRNA splicing . Based on the available information, we are unable to determine the clinical significance of this variant. - |
Hereditary cancer-predisposing syndrome Benign:2
Likely benign, criteria provided, single submitter | clinical testing | Ambry Genetics | Aug 01, 2017 | 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. - |
Likely benign, criteria provided, single submitter | clinical testing | Color Diagnostics, LLC DBA Color Health | Nov 26, 2018 | - - |
Breast and/or ovarian cancer Benign:1
Likely benign, criteria provided, single submitter | clinical testing | CHEO Genetics Diagnostic Laboratory, Children's Hospital of Eastern Ontario | Feb 15, 2022 | - - |
MLH1-related disorder Benign:1
Likely benign, criteria provided, single submitter | clinical testing | PreventionGenetics, part of Exact Sciences | Mar 21, 2023 | This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). - |
Hereditary nonpolyposis colorectal neoplasms Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Invitae | Nov 17, 2023 | - - |
Computational scores
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BayesDel_noAF
Benign
CADD
Benign
DANN
Benign
RBP_binding_hub_radar
RBP_regulation_power_radar
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at