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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

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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_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_001354628.2 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

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  • Separate multiple filter terms with a space. Any order may be used (i. e. a b c and c b a are equivalent )
  • Filtering will only apply to rows that are already loaded on the page. Filtering has no impact on query parameters.
  • Use quotes to match on a longer phrase with spaces (i.e. "mtor c1483f")

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Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
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...
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 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 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 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...