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| Gene | MLH1 |
| Variant | H264Lfs*2 |
| Impact List | frameshift |
| Protein Effect | loss of function - predicted |
| Gene Variant Descriptions | MLH1 H264Lfs*2 indicates a shift in the reading frame starting at amino acid 264 and terminating 2 residues downstream causing a premature truncation of the 756 amino acid Mlh1 protein (UniProt.org). H264Lfs*2 results in aberrant splicing and deficient mismatch repair activity in an in vitro assay (PMID: 32849802), and therefore, is predicted to lead to a loss of Mlh1 protein function. |
| Associated Drug Resistance | |
| Category Variants Paths |
MLH1 mutant MLH1 inact mut MLH1 H264Lfs*2 |
| Transcript | NM_000249.4 |
| gDNA | chr3:g.37014544_37014545insTATA |
| cDNA | c.790_790+1insTATA |
| Protein | p.H264Lfs*2 |
| Source Database | RefSeq |
| Genome Build | GRCh38/hg38 |
| Transcript | gDNA | cDNA | Protein | Source Database | Genome Build |
|---|---|---|---|---|---|
| NM_000249.3 | chr3:g.37014544_37014545insTATA | c.790_790+1insTATA | p.H264Lfs*2 | RefSeq | GRCh38/hg38 |
| NM_001258271.2 | chr3:g.37014544_37014545insTATA | c.790_790+1insTATA | p.H264Lfs*2 | RefSeq | GRCh38/hg38 |
| NM_000249.4 | chr3:g.37014544_37014545insTATA | c.790_790+1insTATA | p.H264Lfs*2 | RefSeq | GRCh38/hg38 |
| NM_001258271.1 | chr3:g.37014544_37014545insTATA | c.790_790+1insTATA | p.H264Lfs*2 | RefSeq | GRCh38/hg38 |
| NM_001354628.2 | chr3:g.37014544_37014545insTATA | c.790_790+1insTATA | p.H264Lfs*2 | RefSeq | GRCh38/hg38 |
| NM_001354630.2 | chr3:g.37014544_37014545insTATA | c.790_790+1insTATA | p.H264Lfs*2 | RefSeq | GRCh38/hg38 |
| NM_001354630.1 | chr3:g.37014544_37014545insTATA | c.790_790+1insTATA | p.H264Lfs*2 | RefSeq | GRCh38/hg38 |
| NM_001354628.1 | chr3:g.37014544_37014545insTATA | c.790_790+1insTATA | p.H264Lfs*2 | RefSeq | GRCh38/hg38 |
| Molecular Profile | Protein Effect | Treatment Approaches |
|---|---|---|
| MLH1 H264Lfs*2 | loss of function - predicted |