Clinical research is necessary to generate evidence for the efficacy and safety of new therapies and some subgroups of patients may respond differently to medical therapies. There are many dimensions of diversity, including demographic and non-demographic characteristics, that may impact how different patients respond to medicines. Diversity of clinical trial participants is needed to help ensure that the trial population is representative of the patients who will use the medicine or medicinal product and ensure that the results are generalizable. Further, clinical trial diversity advances equity in provision of health care and accuracy of ethnicity-specific subgroup analyses.