Dr. Lennon is Dorothy A. Adair Professor in the Departments of Immunology, Neurology and Laboratory Medicine at the Mayo Clinic in Rochester MN. She graduated in Medicine from the University of Sydney and, following residency in Internal Medicine at McGill University, Montreal, she completed a Ph.D. degree in Immunology at the Walter and Eliza Hall Institute in Melbourne. She emigrated to the USA as National Multiple Sclerosis Society Postdoctoral Fellow, and for the next 5 years combined basic immunology and neurobiology studies at the Salk Institute, with adjunct appointment as Assistant Professor and Associate Professor in Neurosciences at the University of California, San Diego. In 1978 she established the Neuroimmunology Laboratory at Mayo Clinic, Rochester, bridging the Departments of Neurology and Immunology. The consistent focus of her research and clinical translational activities has been on neurotransmitter receptors, ion channels and other plasma membrane channels pertinent to autoimmunity, neurobiology and cancer biology. The breadth of her interests reflects her early recognition that cancer is a significant initiator of neurological autoimmunity. In 2005 she established at Mayo Clinic the first Autoimmune Neurology Fellowship Program in North America.
She is a member of the American Association of Immunologists, Society for Neuroscience, American Academy of Neurology, American Society for Neurochemistry, American Society for Clinical Investigation, Clinical Immunology Society, American Association of Medical Laboratory Immunologists, inaugural member of the Federation of Clinical Immunology Societies, Honorary Member of the American Association of Neuromuscular and Electrodiagnostic Medicine and Honorary Fellow of the Neurological Society of Thailand and the Hong Kong Multiple Sclerosis Society.