In addition, fluorodeoxyglucose (FDG)-PET scans at one year revealed that the treated side of the brain exhibited a statistically significant decrease in abnormal metabolism, while the untreated side showed a further increase in abnormal metabolism. The imaging results were considered similar to those achieved with STN Deep Brain Stimulation, an FDA-approved treatment which currently represents the preferred surgical approach for advanced Parkinson's disease. This data provides solid biological support for the observed clinical improvements.
Twelve subjects in total have undergone gene transfer, four in each of three dose cohorts. Seven of the eight patients representing the low and mid-dose cohorts have now been evaluated one year following treatment. Three of the remaining five subjects have been followed for six months and the remaining two for more than four months.
The trial results were presented by Andrew Feigin, M.D., Associate Director, Movement Disorders Center of the North Shore - Long Island Jewish Health System at the 19th Annual Symposia on the Etiology, Pathogenesis and Treatment of Parkinson's Disease and Other Movement Disorders. Dr. Feigin and his colleague David Eidelberg, M.D., Head of the Neurosciences Research Center at North Shore, have been responsible for monitoring, evaluating and conducting neurological reviews of the trial participants before and for one year f