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Σάββατο 12 Ιανουαρίου 2019

Four lines of anaplastic lymphoma kinase inhibitors and brain radiotherapy in a long-surviving non-small-cell lung cancer anaplastic lymphoma kinase-positive patient with leptomeningeal carcinomatosis

imageLung cancer is the most common tumor and the leading cause of cancer-related death worldwide. Approximately 6.7% of non-small-cell lung cancers (NSCLCs) show anaplastic lymphoma kinase (ALK) rearrangement and could benefit from ALK-targeted treatment. Various anti-ALK drugs have been developed during the past years, but it is actually controversial which sequence and which ALK inhibitor is recommended for a single patient. Leptomeningeal carcinomatosis (LC) is associated with a poor prognosis, with an overall survival of 2–4 months for treated patients. The data about LC management derive mainly from retrospective studies, being an exclusion criterion for most trials. Intrathecal chemotherapy and whole-brain radiotherapy (WBRT), associated with a systemic treatment, are the most commonly used approach. Here we present a case of NSCLC harboring an ALK translocation treated with four lines of ALK inhibitors and receiving WBRT for LC, showing an overall survival of ∼5 years from the diagnosis of metastatic disease. This case report focuses mainly on several controversial clinical aspects, that is, the sequence of treatment in ALK-positive NSCLC, the ALK inhibitors' efficacy on brain disease and beyond progression, the management of LC, and the role of WBRT despite the risk of cognitive impairment.

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