The Evolving Landscape of Leptomeningeal Cancer from Solid Tumors: A Systematic Review of Clinical Trials

Review question / Objective: Among adult patients with leptomeningeal carcinomatosis from solid tumors (population) treated with chemotherapy, targeted therapy, or immunotherapy (intervention and comparator) what are the differences in overall survival (OS) and progression-free survival (PFS) and treatment response based on clinical trial outcomes? Eligibility criteria: Included articles reported 1) human subjects ≥ 18 years 2) diagnosis of leptomeningeal carcinomatosis from solid tumors confirmed by imaging or cerebrospinal fluid (CSF) cytology and clinical or neurological symptoms 3) clinical trials 4) with either PFS or MOS outcomes listed. Book chapters, case reports, review articles, observational studies, ed-itorials, and publications of leptomeningeal cancer from hematological tumors and studies consisting solely of pediatric patients were excluded from the analysis.