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| Gene | MLH1 |
| Variant | K618A |
| Impact List | missense |
| Protein Effect | unknown |
| Gene Variant Descriptions | MLH1 K618A lies within the EXO1-interacting region and C-terminal dimerization domain of the Mlh1 protein (PMID: 22753075). The functional effect of K618A is conflicting, as it results in mismatch repair activity similar to wild-type Mlh1 in in vitro assays (PMID: 16083711, PMID: 20020535, PMID: 21120944) and stable microsatellites (PMID: 36054288), but has also been reported to have reduced binding to Pms2 (PMID: 10037723), reduced Pms2 and Mlh1 expression (PMID: 36054288), decreased mismatch repair activity in culture (PMID: 31784484), and to cause reduced cell line viability (PMID: 16982745). |
| Associated Drug Resistance | |
| Category Variants Paths |
MLH1 mutant MLH1 K618A |
| Transcript | NM_000249.4 |
| gDNA | chr3:g.37047639_37047640delAAinsGC |
| cDNA | c.1852_1853delAAinsGC |
| Protein | p.K618A |
| Source Database | RefSeq |
| Genome Build | GRCh38/hg38 |
| Transcript | gDNA | cDNA | Protein | Source Database | Genome Build |
|---|---|---|---|---|---|
| NM_000249 | chr3:g.37047639_37047640delAAinsGC | c.1852_1853delAAinsGC | p.K618A | RefSeq | GRCh38/hg38 |
| NM_000249.4 | chr3:g.37047639_37047640delAAinsGC | c.1852_1853delAAinsGC | p.K618A | RefSeq | GRCh38/hg38 |
| NM_001354628.2 | chr3:g.37047639_37047640delAAinsGC | c.1852_1853delAAinsGC | p.K618A | RefSeq | GRCh38/hg38 |
| NM_001258271.2 | chr3:g.37047639_37047640delAAinsGC | c.1852_1853delAAinsGC | p.K618A | RefSeq | GRCh38/hg38 |
| NM_001258271.1 | chr3:g.37047639_37047640delAAinsGC | c.1852_1853delAAinsGC | p.K618A | RefSeq | GRCh38/hg38 |
| NM_001258271 | chr3:g.37047639_37047640delAAinsGC | c.1852_1853delAAinsGC | p.K618A | RefSeq | GRCh38/hg38 |
| NM_001354628.1 | chr3:g.37047639_37047640delAAinsGC | c.1852_1853delAAinsGC | p.K618A | RefSeq | GRCh38/hg38 |
| NM_000249.3 | chr3:g.37047639_37047640delAAinsGC | c.1852_1853delAAinsGC | p.K618A | RefSeq | GRCh38/hg38 |
| Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
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