Gene Variant Detail

Contact

Missing content? – Request curation!

Request curation for specific Genes, Variants, or PubMed publications.

Have questions, comments, or suggestions? - Let us know!

Email us at : ckbsupport@genomenon.com

Gene MLH1
Variant L676R
Impact List missense
Protein Effect loss of function
Gene Variant Descriptions MLH1 L676R lies within the C-terminal dimerization domain of the Mlh1 protein (PMID: 22753075). L676R results in loss of Mlh1 protein expression compared to wild-type in culture and loss of mismatch repair activity in yeast assays (PMID: 17510385) and in in vitro assays (PMID: 17510385, PMID: 23403630).
Associated Drug Resistance
Category Variants Paths

MLH1 mutant MLH1 inact mut MLH1 L676R

Filtering

  • Case insensitive filtering will display rows if any text in any cell matches the filter term
  • Use simple literal full or partial string matches
  • 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")

Sorting

  • Generally, the default sort order for tables is set to be first column ascending; however, specific tables may set a different default sort order.
  • Click on any column header arrows to sort by that column
  • Hold down the Shift key and click multiple columns to sort by more than one column. Be sure to set ascending or descending order for a given column before moving on to the next column.

Transcript NM_000249.4
gDNA chr3:g.37048941T>G
cDNA c.2027T>G
Protein p.L676R
Source Database RefSeq
Genome Build GRCh38/hg38
Transcript gDNA cDNA Protein Source Database Genome Build
NM_000249.4 chr3:g.37048941T>G c.2027T>G p.L676R RefSeq GRCh38/hg38

Filtering

  • Case insensitive filtering will display rows if any text in any cell matches the filter term
  • Use simple literal full or partial string matches
  • 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")

Sorting

  • Generally, the default sort order for tables is set to be first column ascending; however, specific tables may set a different default sort order.
  • Click on any column header arrows to sort by that column
  • Hold down the Shift key and click multiple columns to sort by more than one column. Be sure to set ascending or descending order for a given column before moving on to the next column.

Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
MLH1 inact mut prostate cancer sensitive Enzalutamide + Talazoparib Guideline Actionable Talzenna (talazoparib) plus Xtandi (enzalutamide) is included in guidelines as systemic therapy for patients with metastatic castration-resistant prostate cancer harboring a pathogenic germline or somatic MLH1 mutation who have not been treated in the setting of castration-resistant prostate cancer (NCCN.org). detail...
MLH1 inact mut prostate cancer sensitive Enzalutamide + Talazoparib FDA approved Actionable In a Phase III trial (TALAPRO-2) that supported FDA approval, Talzenna (talazoparib) plus Xtandi (enzalutamide) improved median radiographic progression-free survival compared to enzalutamide plus placebo (27.9 vs 16.4 mo, HR 0.46, p=0.0003) in patients with metastatic castration-resistant prostate cancer harboring deficient homologous recombination repair genes including MLH1, with an HR of 0.66 (p=0.12) in patients with non-BRCA mutations treated with Talzenna (talazoparib) (PMID: 37285865; NCT03395197). 37285865 detail...
MLH1 inact mut colorectal cancer not applicable N/A Preclinical Emerging In a preclinical study, MLH1 inactivation through hypermethylation was associated with high microsatellite instability (MSI-H) colorectal carcinoma by whole genome sequencing of tumor samples (PMID: 22810696), suggesting it may be a potential biomarker. 22810696
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 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 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 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 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 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...