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| Gene | ALK |
| Variant | L1196Q |
| Impact List | missense |
| Protein Effect | unknown |
| Gene Variant Descriptions | ALK L1196Q lies within the protein kinase domain of the Alk protein (UniProt.org). L1196Q has been demonstrated to confer resistance to Alk inhibitors in the context of ALK rearrangements (PMID: 30662002, PMID: 33209633, PMID: 38290249), but has not been biochemically characterized and therefore, its effect on Alk protein function is unknown (PubMed, Nov 2025). |
| Associated Drug Resistance | Y |
| Category Variants Paths |
ALK mutant ALK L1196X ALK L1196Q |
| Transcript | NM_004304.5 |
| gDNA | chr2:g.29220764A>T |
| cDNA | c.3587T>A |
| Protein | p.L1196Q |
| Source Database | RefSeq |
| Genome Build | GRCh38/hg38 |
| Transcript | gDNA | cDNA | Protein | Source Database | Genome Build |
|---|---|---|---|---|---|
| NM_004304.5 | chr2:g.29220764A>T | c.3587T>A | p.L1196Q | RefSeq | GRCh38/hg38 |
| NM_004304.4 | chr2:g.29220764A>T | c.3587T>A | p.L1196Q | RefSeq | GRCh38/hg38 |
| NM_004304 | chr2:g.29220764A>T | c.3587T>A | p.L1196Q | RefSeq | GRCh38/hg38 |
| Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
|---|---|---|---|---|---|---|---|
| ALK mutant | lung non-small cell carcinoma | no benefit | Crizotinib + Onalespib | Phase II | Actionable | In a Phase II trial, Onalespib (AT13387) and Xalkori (crizotinib) combination treatment did not significantly improve median progression free survival (269 vs 266 days) or objective response rate (55.4%, 38/68 vs 45.3%, 31/68) compared to Xalkori (crizotinib) single treatment in patients with non-small cell lung carcinoma harboring either an ALK mutation or ALK rearrangement (J Clin Oncol 34, 2016 (suppl; abstr 9059); NCT01712217). | detail... |
| ALK mutant | lung non-small cell carcinoma | no benefit | Belizatinib | Phase I | Actionable | In a Phase I trial, treatment with Belizatinib (TSR-011) in ALK inhibitor-naive non-small cell lung cancer patients (n=14) harboring either an ALK mutation, ALK amplification, or an ALK rearrangement resulted in a partial response in 6 patients and stable disease in 8 patients, however, it was determined that the drug resulted in limited efficacy and development of the drug was discontinued (PMID: 31217479; NCT02048488). | 31217479 |