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PMID | (36994308) | ||||||||||||
Authors | Schoepflin ZR, Academia E, Osataphan SA, Rangachari D, Sharifi S, VanderLaan PA, Costa DB | ||||||||||||
Title | ALK Deletion Exons 2 to 19: Case Report of a Rare ALK Inhibitor-Responsive Lung Cancer Driver Oncogene. | ||||||||||||
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Abstract Text | ALK internal deletions of nonkinase domain exons occur in 0.01% of lung cancers with ALK genomic aberrations. We report a lung adenocarcinoma with a previously undescribed somatic ALK deletion of exons 2 to 19 with dramatic and sustained (>23 mo) response to alectinib. Our and other reported cases with ALK nonkinase domain deletions (between introns and exons 1-19) can display positive results in nonsequencing-based lung cancer diagnostic tests (such as immunohistochemistry) used to screen for more common ALK rearrangements. This case report emphasizes that "ALK-driven" lung cancers should be expanded to encompass those harboring not only ALK rearrangements with other genes but also ALK nonkinase domain deletions. |
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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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ALK del exon2-19 | lung adenocarcinoma | predicted - sensitive | Alectinib | Case Reports/Case Series | Actionable | In a clinical case study, Alecensa (alectinib) treatment resulted in a complete response lasting at least 23 months in a patient with metastatic lung adenocarcinoma harboring a deletion of ALK exons 2-19 (PMID: 36994308). | 36994308 |