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| Gene | MLH1 |
| Variant | R265H |
| Impact List | missense |
| Protein Effect | no effect |
| Gene Variant Descriptions | MLH1 R265H lies within the ATPase domain of the Mlh1 protein (PMID: 22753075). R265H results in protein expression comparable to wild-type in culture (PMID: 23403630) and mismatch repair activity comparable to wild-type in yeast assays (PMID: 17510385) and in in vitro assays (PMID: 11781295, PMID: 17510385, PMID: 23403630). |
| Associated Drug Resistance | |
| Category Variants Paths |
MLH1 mutant MLH1 R265H |
| Transcript | NM_000249.4 |
| gDNA | chr3:g.37017509G>A |
| cDNA | c.794G>A |
| Protein | p.R265H |
| Source Database | RefSeq |
| Genome Build | GRCh38/hg38 |
| Transcript | gDNA | cDNA | Protein | Source Database | Genome Build |
|---|---|---|---|---|---|
| NM_001354628.2 | chr3:g.37017509G>A | c.794G>A | p.R265H | RefSeq | GRCh38/hg38 |
| NM_001258271.2 | chr3:g.37017509G>A | c.794G>A | p.R265H | RefSeq | GRCh38/hg38 |
| NM_000249.4 | chr3:g.37017509G>A | c.794G>A | p.R265H | RefSeq | GRCh38/hg38 |
| NM_001354630.2 | chr3:g.37017509G>A | c.794G>A | p.R265H | RefSeq | GRCh38/hg38 |
| Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
|---|---|---|---|---|---|---|---|
| MLH1 mutant | endometrial carcinoma | not applicable | N/A | Guideline | Risk Factor | Germline mutations in MLH1 result in Lynch syndrome, which is associated with increased risk of developing endometrial carcinoma (NCCN.org). | detail... |
| MLH1 mutant | rectum cancer | not applicable | N/A | Guideline | Risk Factor | Lynch syndrome results from germline mutations in DNA mismatch repair genes including MLH1, MSH2, MSH6, and PMS2, and is associated with increased risk of developing colorectal cancer (NCCN.org). | detail... |
| MLH1 mutant | pancreatic cancer | not applicable | N/A | Guideline | Risk Factor | Germline mutations in MLH1 result in Lynch syndrome, which is associated with increased risk of developing pancreatic cancer (NCCN.org). | detail... |
| MLH1 mutant | adrenocortical carcinoma | not applicable | N/A | Guideline | Risk Factor | Lynch syndrome results from germline mutations in DNA mismatch repair genes including MLH1, MSH2, MSH6, and PMS2, and is associated with increased risk of developing adrenocortical carcinoma (NCCN.org). | detail... |
| MLH1 mutant | ovarian cancer | not applicable | N/A | Guideline | Risk Factor | Germline mutations in MLH1 result in Lynch syndrome, which is associated with increased risk of ovarian cancer (NCCN.org). | detail... |
| MLH1 mutant | stomach cancer | not applicable | N/A | Guideline | Risk Factor | Germline mutations in MLH1 result in Lynch syndrome, which is associated with increased risk of early onset of gastric cancer (NCCN.org). | detail... |
| MLH1 mutant | colon cancer | not applicable | N/A | Guideline | Risk Factor | Lynch syndrome results from germline mutations in DNA mismatch repair genes including MLH1, MSH2, MSH6, and PMS2, and is associated with increased risk of developing colon cancer (NCCN.org). | detail... |
| MLH1 mutant | small intestine adenocarcinoma | not applicable | N/A | Guideline | Risk Factor | Lynch syndrome results from germline mutations in DNA mismatch repair genes including MLH1, MSH2, MSH6, and PMS2, and is associated with increased risk of developing small bowel adenocarcinoma (NCCN.org). | detail... |