rs1057517622
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Variant summary
Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_StrongBP6_Very_Strong
The NM_000249.4(MLH1):c.546-18T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000559 in 1,609,994 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 Likely benign (★★).
Frequency
Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000055 ( 0 hom. )
Consequence
MLH1
NM_000249.4 intron
NM_000249.4 intron
Scores
2
Clinical Significance
Conservation
PhyloP100: 0.461
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 Benign. Variant got -12 ACMG points.
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.57).
BP6
Variant 3-37011802-T-C is Benign according to our data. Variant chr3-37011802-T-C is described in ClinVar as [Likely_benign]. Clinvar id is 372032.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
MLH1 | NM_000249.4 | c.546-18T>C | intron_variant | ENST00000231790.8 | NP_000240.1 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
MLH1 | ENST00000231790.8 | c.546-18T>C | intron_variant | 1 | NM_000249.4 | ENSP00000231790.3 |
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152208Hom.: 0 Cov.: 32
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GnomAD3 exomes AF: 0.00000398 AC: 1AN: 251186Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 135806
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GnomAD4 exome AF: 0.00000549 AC: 8AN: 1457786Hom.: 0 Cov.: 30 AF XY: 0.00000689 AC XY: 5AN XY: 725518
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GnomAD4 genome AF: 0.00000657 AC: 1AN: 152208Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 74364
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ClinVar
Significance: Likely benign
Submissions summary: Benign:4
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Colorectal cancer, hereditary nonpolyposis, type 2 Benign:2
Likely benign, criteria provided, single submitter | clinical testing | Myriad Genetics, Inc. | Mar 10, 2023 | This variant is considered likely benign. This variant is intronic and is not expected to impact mRNA splicing. - |
Likely benign, criteria provided, single submitter | clinical testing | Counsyl | Oct 19, 2016 | - - |
Hereditary nonpolyposis colorectal neoplasms Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Jan 25, 2024 | - - |
Hereditary cancer-predisposing syndrome Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Color Diagnostics, LLC DBA Color Health | Jul 20, 2017 | - - |
Computational scores
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BayesDel_noAF
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DANN
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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