“Leptomeningeal metastases (LM), a devastating complication and predictor of poor survival in lung cancer patients, was found to be more prevalent in non-small cell lung cancer (NSCLC) patients with epidermal growth factor receptor (EGFR) mutations. Patients receiving tyrosine kinase inhibitors (TKIs) targeting EGFR mutations had a longer overall survival (OS) than those who did not receive TKIs, demonstrating the effectiveness of TKIs for LM therapy.
“The leptomeninges are the membranes that surround the brain, including the arachnoid mater and pia mater, and ensue when cancer cells metastasize to intracranial structures and the cerebrospinal fluid (CSF). LM occurs in 10-26% of lung cancer and the presence of LM is a devastating complication for patients and often associated with poor survival. Treatment strategies for LM include epidermal growth factor receptor tyrosine kinase inhibitors (EGFR-TKIs), chemotherapy, whole brain radiotherapy (WBRT), intrathecal chemotherapy (ITC), surgery, and ventriculoperitoneal (VP) shunt operations. However, therapeutic options for treating LM are challenging with no standard treatment. The use of EGFR-TKIs markedly prolong survival in patients with EGFR mutations and frequent EGFR mutations.”
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