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Alyssa Suarez

Person: Manager, Molecular Phenotyping and Genotyping Core
I am originally from Chicago, Illinois. I moved to Boston for school and graduated from Boston College in 2023 with a B.S. in Biology. My duties include fulfilling requests for the Joslin MPGC and maintaining instruments for the Joslin community. Outside of work I enjoy running, reading and working...

The Hypoglycemia Clinic at Joslin

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Meet Our Hypoglycemia Team Mary Elizabeth Patti MD, Endocrinologist Janine Suarez MD, Endocrinologist Sean M. Brown MD, Endocrinology Fellow Mallory Sin RD, Hypoglycemia Clinic Dietician Nicole Patience RD, Hypoglycemia Clinic Dietician What is hypoglycemia? Hypoglycemia is a condition that involves...

Mechanisms of Hypoglycemia in Patients without Diabetes

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The purpose of this study is to learn more about the causes of hypoglycemia (low blood sugar). This study involves the following: Coming to the Joslin Diabetes Center for 1 visit (for some participants there may be an opportunity to take part in a 2 nd visit). Visit #1 • Medical history, physical...

Arionas Efthymiou, M.S., Ph.D.

Person: (Alumnus) Postdoctoral Research Fellow, now faculty member, University of Bern, Switzerland
Arionas earned his BS in Nutrition from Harokopio University of Athens in Greece, his MS in Clinical and Public Health Nutrition from the University College London (UCL), United Kingdom, and his PhD in Molecular and Translational Biomedicine from ETH Zürich in Switzerland. He has been awarded the...

Dina Zeldin

Person: Clinical Research Coordinator
I am grateful to be working with patients and researchers on exciting studies that bring us closer to new care options for people living with hypoglycemia and metabolic disease. In 2025, I graduated from Harvard College, where I studied Applied Mathematics and Human Evolutionary Biology. I am...

News from the Patti Lab

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We recently identified GDF15 as a hormone released in response to hypoglycemia, which may contribute to symptoms experienced during hypoglycemia. This paper was published in Cell Reports Medicine in March 2026 (Pubmed, PMID 41806840). Congratulations to first author Rafael Ferraz-Bannitz PhD and the...