ctDNA Dynamics and Mechanisms of Acquired Resistance in Patients Treated with Osimertinib with or without Bevacizumab from the Randomized Phase II ETOP-BOOSTER Trial.

Purpose: The ETOP 10-16 BOOSTER study was a randomized phase II trial of osimertinib and bevacizumab therapy versus osimertinib therapy in patients with an acquired EGFR T790M mutation. The mechanisms of acquired resistance to osimertinib and bevacizumab have not been described previously.

Experimental Design: Next-generation sequencing (Guardant360) was conducted in serial plasma samples.

T4 cervical esophageal cancer cured with modern chemoradiotherapy: A case report.

Background: T4 esophageal cancer portends a poor prognosis, particularly when it is complicated by a tracheoesophageal fistula (TEF) either resulting from disease or occurring as a complication of treatment. Patients with TEF that occurs during treatment are commonly treated with palliative intent because fistula-associated treatment complications such as aspiration pneumonia and mediastinitis are associated with high morbidity and mortality. To date, there is no clear evidence on the optimal treatment of T4 esophageal cancer, particularly when a TEF formation occurs.

Abiraterone or Enzalutamide in Advanced Castration-Resistant Prostate Cancer: An Indirect Comparison.

Background: To perform a comparative effectiveness analyses between enzalutamide and abiraterone acetate in both the pre-docetaxel and post-docetaxel settings based on published phase III randomized trials.

Methods: The primary measure of efficacy was the posterior probability that enzalutamide outperforms abiraterone acetate (AA) with prednisone in terms of overall survival (OS) on average. Indirect meta-estimates were generated from four randomized studies in the context of a Bayesian hierarchical model with study-specific efficacy estimates meta-analyzed on the log scale.