Xandra O. Breakefield

Xandra Owens Breakefield is an American neurologist and professor of neurology at the Harvard Medical School. Her research makes use of molecular genetics to understand the origins of inherited neurological diseases.

Early life and education As a child, Breakfield was undecided about what she would do when she grew up. Her mother told her she had to attend college or work in a dime store, so Breakefield decided to attend college. Breakefield enrolled as an undergraduate at Wilson College, where she discovered the joy of learning.

Research and career Breakefield's early work considered the nerve growth factor, a protein involved in the development of sensory neurons, catechol-O-methyltransferase and monoamine oxidase.

Breakefield uses molecular genetics to understand inherited variations in neurological disease. To achieve this, she uses new viral vectors to enhance gene delivery and develops new therapeutic modalities. In particular, she has developed strategies to identify the genes that cause movement disorders (e.g. early-onset torsion dystonia and X-linked dystonia parkinsonism). In addition, she has studied the extracellular vesicles that are released by cells of brain tumor, looking at how they modify their microenvironment to promote tumor growth.

Awards and honors Mathilde Solowey Neuroscience Award

Selected publications