Figure 2 (IMAGE) Impact Journals LLC Caption Results in clinical trials. PSA values from fifteen arms derived from prostate cancer clinical trials were analyzed using scaling analysis and averaging all patients in a treatment arm. The straight line indicates that tumor growth is exponential. These trials were summed in the lower right-hand corner (Methods). We analyzed de-identified, patient-level comparator (control) arm data from thirteen randomized metastatic castrate-resistant prostate cancer (mRPC) clinical trials including one phase IIB and ten phase III available in Project Data Sphere, LLC (PDS) and two randomized trials available from YODA (Yale University Open Data Access). Thirteen arms were the comparators and two treatment arms were abiraterone. All y-axes have the units of inverse rate, i.e., time. Credit Correspondence to - Krastan B. Blagoev - krastan@jhu.edu Usage Restrictions Copyright: © 2021 Blagoev et al. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.