RT Journal Article SR Electronic T1 Scientific considerations for global drug development JF Science Translational Medicine FD American Association for the Advancement of Science SP eaax2550 DO 10.1126/scitranslmed.aax2550 VO 12 IS 554 A1 Wilson, Jennifer L. A1 Cheung, Kit Wun Kathy A1 Lin, Lawrence A1 Green, Elizabeth A. E. A1 PorrĂ¡s, Analia I. A1 Zou, Ling A1 Mukanga, David A1 Akpa, Paul A. A1 Darko, Delese Mimi A1 Yuan, Rae A1 Ding, Sheng A1 Johnson, Wiltshire C. N. A1 Lee, Howard A. A1 Cooke, Emer A1 Peck, Carl C. A1 Kern, Steven E. A1 Hartman, Dan A1 Hayashi, Yoshikazu A1 Marks, Peter W. A1 Altman, Russ B. A1 Lumpkin, Murray M. A1 Giacomini, Kathleen M. A1 Blaschke, Terrence F. YR 2020 UL http://stm.sciencemag.org/content/12/554/eaax2550.abstract AB Requiring regional or in-country confirmatory clinical trials before approval of drugs already approved elsewhere delays access to medicines in low- and middle-income countries and raises drug costs. Here, we discuss the scientific and technological advances that may reduce the need for in-country or in-region clinical trials for drugs approved in other countries and limitations of these advances that could necessitate in-region clinical studies.