Diversity in Clinical Trials: Being Left Out By Marina Shayevich Why do African Americans develop breast cancers with significantly higher basal gene expression? 1 Why do Hispanics develop type II diabetes at an earlier age than other groups? 2 Understanding the functional reasons for disease processes is necessary to develop targeted treatments. Yet because clinical research lacks sufficient diversity, reasons for and mechanisms of disease development are not fully understood. Some reasons for minority patient under-representation in clinical trials are known. For example, strict eligibility criteria, like chronic kidney disease,3 hypertension or diabetes exclusions, leave out many groups, [...]