“…There are also many opportunities where RWD can benefit clinical pharmacologists, including streamlining or even replacing clinical trials in a few instances, 6,7 informing on difficult-to-study populations, such as children, 7 or rare diseases, drug repurposing, 8 pharmacovigilance, 9 pharmacokinetic/pharmacodynamic modeling, 10 and physiologically-based pharmacokinetic modeling. 11 Given the range of opportunities, we must also understand the issues and challenges in how RWD should be used [12][13][14] and ensure that appropriate validation is undertaken for new methods. 15 RWD is also used commonly in the context of the explosion of data available from -omics, continuous, ambulatory (usually in the real world) patient-monitoring technology, including wearables and other high-capacity data capture and analytical methods (often referred to as Big Data).…”