Abstract
Therapy-resistant cancer stem cells (CSCs) contribute to the poor clinical outcomes of patients with recurrent glioblastoma (rGBM) who fail standard of care (SOC) therapy. ChemoID is a clinically validated assay for identifying CSC-targeted cytotoxic therapies in solid tumors. In a randomized clinical trial (NCT03632135), the ChemoID assay, a personalized approach for selecting the most effective treatment from FDA-approved chemotherapies, improves the survival of patients with rGBM (2016 WHO classification) over physician-chosen chemotherapy. In the ChemoID assay-guided group, median survival is 12.5months (95% confidence interval [CI], 10.2-14.7) compared with 9months (95% CI, 4.2-13.8) in the physician-choice group (p= 0.010) as per interim efficacy analysis.The ChemoID assay-guided group has a significantly lower risk of death (hazard ratio [HR]=0.44; 95% CI, 0.24-0.81; p= 0.008). Results of this study offer a promising way to provide more affordable treatment for patients with rGBM in lower socioeconomic groups in the US and around theworld.
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