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Ref Type | Journal Article | ||||||||||||
PMID | (34763318) | ||||||||||||
Authors | Liu L, Hou F, Liu Y, Li W, Zhang H | ||||||||||||
Title | A Case of Lung Adenocarcinoma Response to Alectinib Harboring a Rare EML4-ALK Variant, Exon 6 of EML4 Fused to Exon 18 of ALK. | ||||||||||||
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Abstract Text | More than 20 types of ALK fusion variant subtypes have been identified, including different fusion partner genes or EML4-ALK fusions with different breakpoints. However, different ALK fusions show different sensitivities to ALK-tyrosine kinase inhibitors (ALK-TKIs) and the emergence of rare fusions brings great challenges to the target therapy in clinic. We report a rare EML4-ALK (E6;A18) fusion in a patient with lung adenocarcinoma that responded well to alectinib. This is the second case of this rare variant reported but the first report of response to an ALK-TKI. This evidence is the first to show that alectinib may be effective for this rare fusion type of non-small cell lung cancer, and these findings have important implications for drug selection in patients with this subtype. Further studies are needed to understand the function of this variant. |
Molecular Profile | Treatment Approach |
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Therapy Name | Drugs | Efficacy Evidence | Clinical Trials |
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Gene | Variant | Impact | Protein Effect | Variant Description | Associated with drug Resistance |
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Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
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EML4 - ALK | lung adenocarcinoma | predicted - sensitive | Alectinib | Case Reports/Case Series | Actionable | In a clinical case study, Alecensa (alectinib) treatment resulted in clinical symptom improvement and a partial response lasting at least 9 months in a patient with metastatic lung adenocarcinoma harboring EML4-ALK (e6:e18) (PMID: 34763318). | 34763318 |