She is the principal investigator of several clinical studies including the ultra fast-acting insulin research (U-FAIR) and the detection of early cardiovascular disease markers in youth with type 1 diabetes projects. Dr. Cengiz has been an active member of the artificial pancreas team at Yale and has many publications in the field of diabetes technology. She has been selected as a member of the diabetes core group for the National Institute of Health Best Practices for Pediatric Treatment Group, and has been collaborating with diabetologists overseas to improve the treatment of pediatric diabetes globally.