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Ref Type
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.
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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Molecular Profile Treatment Approach
Gene Name Source Synonyms Protein Domains Gene Description Gene Role
Therapy Name Drugs Efficacy Evidence Clinical Trials
Drug Name Trade Name Synonyms Drug Classes Drug Description
Gene Variant Impact Protein Effect Variant Description Associated with drug Resistance
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
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