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| Gene | MLH1 |
| Variant | T82I |
| Impact List | missense |
| Protein Effect | loss of function |
| Gene Variant Descriptions | MLH1 T82I lies within the ATPase domain of the Mlh1 protein (PMID: 22753075). T82I results in Mlh1 protein expression comparable to wild-type in a patient tumor sample in one study (PMID: 20587412) but reduced protein expression in culture in another study (PMID: 23403630), loss of mismatch repair activity in a yeast assay (PMID: 17510385) and in in vitro assays (PMID: 17510385, PMID: 23403630), and high microsatellite instability despite expression of Mlh1, Pms2, Msh2, and Msh6 comparable to wild-type in patient tumors (PMID: 20587412). |
| Associated Drug Resistance | |
| Category Variants Paths |
MLH1 mutant MLH1 inact mut MLH1 T82I |
| Transcript | NM_000249.4 |
| gDNA | chr3:g.37000992C>T |
| cDNA | c.245C>T |
| Protein | p.T82I |
| Source Database | RefSeq |
| Genome Build | GRCh38/hg38 |
| Transcript | gDNA | cDNA | Protein | Source Database | Genome Build |
|---|---|---|---|---|---|
| NM_001354628.2 | chr3:g.37000992C>T | c.245C>T | p.T82I | RefSeq | GRCh38/hg38 |
| NM_001258271.2 | chr3:g.37000992C>T | c.245C>T | p.T82I | RefSeq | GRCh38/hg38 |
| NM_001354630.2 | chr3:g.37000992C>T | c.245C>T | p.T82I | RefSeq | GRCh38/hg38 |
| XM_005265161.3 | chr3:g.37000992C>T | c.245C>T | p.T82I | RefSeq | GRCh38/hg38 |
| NM_000249.4 | chr3:g.37000992C>T | c.245C>T | p.T82I | RefSeq | GRCh38/hg38 |
| Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
|---|