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TrialNet Staff

Jason Gaglia, MD, MMSc

Principal Investigator

Jason Gaglia is an Assistant Investigator and attending adult Endocrinologist at Joslin Diabetes Center and is a faculty member at Harvard Medical School. He holds undergraduate degrees in Biology, Chemistry, Biochemistry, and Physics from Rutgers College. He is a graduate of the Harvard-MIT Health Sciences and Technology program at Harvard Medical School and the Beth Israel Deaconess-Harvard Clinical Investigator Training Program. Dr. Gaglia is a former member of the clinical islet transplant team at the National Institutes of Health. Dr. Gaglia is an expert in endocrine-related imaging, leading several clinical trials in this area. His current research focuses on developing clinically applicable measures of inflammation and beta-cell mass, keys to furthering our understanding of diabetes. As a practicing Endocrinologist, he sees patients at Joslin Clinic and Harvard Vanguard Medical Associates.

Dayna McGill , MD


Dayna McGill is a Pediatric Endocrinology fellow at the Massachusetts General Hospital for Children Department of Pediatrics Endocrinology and Diabetes. She received her medical degree from New York Medical College and completed her pediatrics residency at the Children's Hospital of Philadelphia. Dr. McGill's current research interests include the identification of imaging modalities and cellular markers of beta-cell death as a tool to improve understanding of the natural history of type 1 diabetes. She sees patients at MGH Pediatric Endocrinology, and is also interested in advocacy, medical education and patient education.

Katharine Garvey MD, MPH

Katharine Garvey is an attending pediatric endocrinologist at Boston Children’s Hospital and a health services researcher at Boston Children’s Hospital and Joslin Diabetes Center.  She graduated from Harvard Medical School and completed pediatric residency and pediatric endocrinology fellowship at Boston Children’s Hospital.  Dr. Garvey also completed the Harvard Pediatric Health Services Research Fellowship and obtained a Master in Public Health Degree from the Harvard School of Public Health.  Her current research focuses on improving the process of transition from pediatric to adult care for adolescents and young adults with type 1 diabetes. 

Sarah Szubowicz, MPH

Study Coordinator

Sarah is a graduate of the University of Connecticut where she earned a BS in Molecular and Cell Biology. She went on to earn a Master's in Public Health from Tulane University School of Public Health and Tropical Medicine in New Orleans in 2011. Sarah has been an active member of the TrialNet team since October 2011 and hopes to eventually become a Physician's Assistant.

Brittany Resnick, BSN, RN

Nurse Coordinator

Brittany is a Registered Nurse at Joslin Diabetes Center. She has been a member of the Joslin TrialNet team since December 2013. Brittany graduated from Simmons College where she earned a Bachelor of Science in Nursing. She currently is pursuing her Master of Science in Nursing at Simmons College and hopes to eventually practice as a Nurse Practitioner.

Gordon Weir, MD


Dr. Weir is Co-Head of the Section on Islet Cell Biology and Regenerative Medicine and holds the Diabetes Research and Wellness Foundation Chair at Joslin, and is also Professor of Medicine at Harvard Medical School. His research interests focus on pancreatic islets and what goes wrong in diabetes. He is also leading an NIH clinical trial testing a new therapeutic approach to slowing the progression of new-onset type 1 diabetes.

Laurie Higgins, MS, RD, LDN, CDE

Certified Diabetes Educator

Laurie is the Coordinator of Pediatric Nutrition Education and Research working in the Pediatric, Adolescent and Young Adult Section at Joslin Diabetes Center in Boston, MA. She graduated from the University of Rhode Island with a Bachelor in Science and Framingham State College with a Master of Science in Food and Nutrition: Human Nutrition - Media Technologies. Laurie completed her dietetic internship at Harper-Grace Hospital in Detroit, MI and worked at the Harvard-affiliated Children's Hospital in Boston for 18 years before moving to Joslin Diabetes Center. Her expertise includes nutritional management of diabetes, celiac disease, gastrointestinal diseases and food allergies.

Page last updated: April 26, 2018