Congratulations to the 11 researchers with principal investigator [no-lexicon](PI)[/no-lexicon] status at UHN who have made the coveted 2025 list of Highly Cited Researchers from Clarivate—a global leader in bibliometrics and analytics. This year, Clarivate recognized 6,868 individuals across 60 countries, awarding 7,131 Highly Cited Researcher designations.
Citations—the acknowledgment of a scientific article in subsequent research—are a key measure of a publication's influence within a specific field. The Clarivate Highly Cited Researcher accolade is a testament to those whose publications over the past decade rank among the top 1% most-cited publications in their respective fields and publication years.
Notably, four of UHN's PIs earned the added distinction of being included in the ‘Cross-Field’ category, underscoring their interdisciplinary excellence and impact in multiple research fields.
Dr. Brad Wouters, Executive Vice-President of Science and Research at UHN, expresses admiration for these PIs, “These leaders are shaping the future of medicine and science. The recognition today reflects the fact that their work not only contributes directly to scientific advancement, but also has a tremendous influence globally on the research of others. Their impact reaches far beyond publications—it drives innovation that brings our vision of A Healthier World closer to reality.”
The full list of UHN PIs and the categories in which they received their distinction are listed below. For more details, see the Clarivate press release.
Dr. Gary Bader | Cross-Field
Affiliate Scientist, UHN’s Princess Margaret Cancer Centre
Research focus: Bridging molecular and clinical datasets to identify clinically relevant targets of disease.
Dr. David Cherney | Clinical Medicine
Senior Scientist, UHN
Research focus: Physiological factors that initiate renal disease in patients with diabetes.
Dr. Slava Epelman | Immunology
Senior Scientist, UHN
Research focus: The contribution of immune cells to cardiac tissue injury and repair.
Dr. Eddy Fan | Clinical Medicine
Scientist, UHN
Research focus: Advanced life support for acute respiratory failure and patient outcomes from critical illness.
Dr. Michael Fehlings | Cross-Field
Senior Scientist, UHN’s Krembil Brain Institute
Research focus: Spinal cord injury treatments using regenerative medicine.
Dr. Anthony Lang | Neuroscience and Behaviour
Senior Scientist, UHN’s Krembil Brain Institute
Research focus: The disease etiology, pathogenesis, and treatment of Parkinson disease and related movement disorders.
Dr. Tak Mak | Cross-Field
Senior Scientist, UHN’s Princess Margaret Cancer Centre
Research focus: The mechanisms underlying immune responses and cancer development.
Dr. Ozgur Mete | Biology and Biochemistry
Clinician Investigator, UHN’s Princess Margaret Cancer Centre
Research focus: Biomarker discovery for endocrine and neuroendocrine tumours.
Dr. Amit Oza | Clinical Medicine
Senior Scientist, UHN’s Princess Margaret Cancer Centre
Research focus: Targeted therapies and clinical trials for gynecologic cancers.
Dr. Matthieu Schapira | Pharmacology and Toxicology
Affiliate Scientist, UHN’s Princess Margaret Cancer Centre
Research focus: Computational drug design to fight cancer through epigenetics.
Dr. Lillian Siu | Cross-Field
Senior Scientist, UHN’s Princess Margaret Cancer Centre
Research focus: New anticancer drug development, particularly with respect to head and neck malignancies.