Hallett Center for Diabetes and Endocrinology

Leslie J. DeGroot, MD

  • Professor of Medicine (Research), Division of Endocrinology, Warren Alpert Medical School of Brown University

Leslie J. DeGroot, MD, joined the division of endocrinology as a member of the research faculty in 2005. DeGroot served on the faculty at the University of Chicago for more than three decades. He trained at Columbia College of Physicians and Surgeons, and did his residency at New York-Presbyterian Hospital in New York City and Massachusetts General Hospital in Boston. He served in the Public Health Service at the National Institutes of Health (NIH) and in Afghanistan, and spent 12 years at Massachusetts General Hospital and the Massachusetts Institute of Technology before joining the department of medicine at the University of Chicago. At the University of Chicago he was the head of the thyroid study unit, and for many years head of the endocrine section.

His research interests have recently centered on viral mediated gene therapy for thyroid cancer, and genetic mechanisms promoting autoimmune thyroid disease, the subject of his current NIH grant.

Research accomplishments include purification of thyroid peroxidase and identifying it as the typical antigen in thyroid autoimmunity, recognition of the thyroid hormone resistance syndrome and cloning the mutated receptor genes involved, identification of the CTLA-4 gene as a common contributor to many human autoimmune diseases, development of an adenoviral vector for therapy of medullary thyroid cancer, and numerous studies on therapy of thyroid cancer. DeGroot is editor of the three-volume textbook Endocrinology, now in its fifth edition. He also directs two Web sites, www.endotext.org and www.thyroidmanager.org, which present freely available endocrine textbooks for medical doctors around the world.

Representative Publications

  1. Takeda, T, Inaba H, Yamazaki M, Kyo S, Miyamoto T, Suzuki S, Ehara T, Kakizawa T, Hara M, DeGroot LJ, Hashizume K. Tumor-specific gene therapy for undifferentiated thyroid carcinoma utilizing the telomerase reverse transcriptase promoter. J Clin Endocrinol Metab 88:3531-3538, 2003.

  2. DeGroot LJ. Nonthyroidal illness syndrome is functional central hypothyroidism, and if severe, hormone replacement is appropriate in light of present knowledge. J Endocrinol Invest 26:1163-1170, 2003.

  3. Yamazaki M, Straus FH, Messina M, Robinson BG, Takeda T, Hashizume K, DeGroot LJ. Adenovirus-mediated tumor-specific combined gene therapy using Herpes simplex virus thymidine/ganciclovir system and murine interleukin-12 induces antitumor activity against medullary thyroid carcinoma. Cancer Gene Therapy, 11:8-15, 2004.

  4. DeGroot LJ, Zhang R. Viral mediated gene therapy for management of metastatic thyroid carcinoma. In: Current Drug Targets, Smallridge RC, editor, Bentham Science Publishers, in press for 2004.

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