ClinVar Miner

Submissions for variant NM_000249.4(MLH1):c.397G>T (p.Gly133Ter)

dbSNP: rs63751124
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
International Society for Gastrointestinal Hereditary Tumours (InSiGHT) RCV000075698 SCV000106702 pathogenic Lynch syndrome 2013-09-05 reviewed by expert panel research Coding sequence variation resulting in a stop codon
Ambry Genetics RCV003162485 SCV003858907 pathogenic Hereditary cancer-predisposing syndrome 2023-01-17 criteria provided, single submitter clinical testing The p.G133* pathogenic mutation (also known as c.397G>T), located in coding exon 5 of the MLH1 gene, results from a G to T substitution at nucleotide position 397. This changes the amino acid from a glycine to a stop codon within coding exon 5. This alteration was identified in multiple individuals with a personal and/or family history suggestive of Lynch syndrome (Nakahara M et al. Cancer Epidemiol Biomarkers Prev, 1997 Dec;6:1057-64; Bonadona V et al. JAMA, 2011 Jun;305:2304-10; Groth JV et al. Appl Immunohistochem Mol Morphol, 2020 Mar;28:e26-e30). This variant is considered to be rare based on population cohorts in the Genome Aggregation Database (gnomAD). In addition to the clinical data presented in the literature, this alteration is expected to result in loss of function by premature protein truncation or nonsense-mediated mRNA decay. As such, this alteration is interpreted as a disease-causing mutation.
Myriad Genetics, Inc. RCV003451146 SCV004186564 pathogenic Colorectal cancer, hereditary nonpolyposis, type 2 2023-07-13 criteria provided, single submitter clinical testing This variant is considered pathogenic. This variant creates a termination codon and is predicted to result in premature protein truncation.

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