CSIG-20. SYSTEMATIC REVIEW OF MOLECULAR TARGETED THERAPIES FOR ADULT-TYPE DIFFUSE GLIOMA: AN ANALYSIS OF CLINICAL AND LABORATORY STUDIES

Abstract

Abstract Gliomas are becoming a frequent topic of investigation for molecular-targeted therapies. However, the current state of research in this area, particularly following the 2021 WHO guideline change, remains undefined. This systematic review sought to characterize the current state of molecular target therapy research for adult-type diffuse glioma to inform scientific progress. A systematic review was conducted in accordance with PRISMA guidelines. Studies meeting inclusion criteria were queried for study design, tumor type, molecular target, molecular pathway, and details pertaining to the molecular targeted therapy– namely the modality, dose, duration of treatment. 350 studies met inclusion criteria: 52 of these were clinical studies, 190 were laboratory studies investigating existing molecular therapies, and 108 were laboratory studies investigating new molecular targets. 119 ongoing clinical trials are also underway, per a detailed query of clinicaltrials.gov. GBM was the predominant tumor studied, with few studies mentioning IDH-mutant astrocytoma or oligodendroglioma. The most common molecular targets in published clinical studies and clinical trials were protein kinase pathways, followed by microenvironmental targets, then immunotherapy and cell cycle/apoptosis pathways. The most common molecular targets in laboratory studies were protein kinase pathways, followed by cell cycle/apoptosis, microenvironmental targets, then immunotherapy pathways, with the wnt/β-catenin pathway arising as a novel target. This systematic review examined the current evidence on molecular targeted therapy for adult-type diffuse glioma and discusses its implications for clinical practice and future research. Published research encompasses clinical studies, laboratory testing of existing therapies, and identification of novel targets, with GBM as the focal point. Ongoing clinical trials are numerous in this area of research as well and follow a similar pattern in tumor type and targeted pathways as published clinical studies. The most common molecular targets were protein kinase pathways, with some variation in the prevalence of other pathways depending on study type.