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CC BY 4.0 · Indian J Med Paediatr Oncol
DOI: 10.1055/s-0043-1777040
Case Report with Review of Literature

Clinical Outcomes of Crizotinib Readministration in Patients with Nonsmall Cell Lung Cancer with Anaplastic Lymphoma Kinase Rearrangement: Case Report and Review of Literature

Autoren

  • Prasant Kumar Parida

    1   Department of Medical Oncology, Acharya Harihar Post Graduate Institute of Cancer, Cuttack, Odisha, India

Funding This study was supported by Department of Medical Oncology, Acharya Harihar Post Graduate Institute of Cancer, Cuttack, Odisha, India.
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Abstract

Recent studies have demonstrated promising outcomes of the first-line anaplastic lymphoma kinase-tyrosine kinase inhibitor (ALK-TKI) “crizotinib” in patients with locally advanced and metastatic lung cancers with high expression of the fusion protein “EML4-ALK.” High drug resistance, however, restricts the therapeutic advantages of ALK-TKIs in patients with nonsmall cell lung cancer (NSCLC). The contemporary literature documents limited treatment approaches for patients with NSCLC relapse or nonresponsiveness to second-/third-generation ALK-TKIs. We hereby provide a descriptive analysis of five NSCLC cases treated with crizotinib, ceritinib, and alectinib for a median duration of 54 months. The outcomes indicate a profound therapeutic response in patients receiving 4th and subsequent line of treatment with crizotinib. The crizotinib retreatment actively reduced patient resistance to the ALK-TKIs by reversing the mesenchymal epithelial transition amplification. The results from this case series also emphasize the possible role of next-generation sequencing in determining therapeutic resistance and transforming the treatment paradigm for NSCLC. Partial response was observed in the patients after 6 months of crizotinib readministration. This is possibly the first case series reporting crizotinib rechallenge in patients of ALK positive NSCLC who failed on subsequent ALK-TKIs and multiple lines of chemotherapies.

Keywords

NSCLC - lung cancer - EML4-ALK - ALKi

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Publikationsverlauf

Artikel online veröffentlicht:
28. Dezember 2023

© 2023. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)

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