WASHINGTON, DC, June 11, 2007 /PRNewswire-FirstCall/ - Paul S. Aisen, M.D., Professor of Neurology and Medicine at Georgetown University Medical Center, and principal investigator in the United States of Neurochem Inc.'s North American Phase III clinical trial for tramiprosate (ALZHEMED(TM)) will present today an update on Neurochem's investigational product candidate for the treatment of Alzheimer's disease (AD). The presentation by Dr. Aisen will take place at the Intervention and Treatment Session, scheduled from 2:30 - 4:30 P.M. (ET), at the Alzheimer's Association International Conference on Prevention of Dementia in Washington, DC. In his presentation entitled, A Phase III Study of the Efficacy, Safety and Disease Modification Effect of Tramiprosate in Mild-to-Moderate Alzheimer's Disease, Dr. Aisen will review the Phase III clinical trial and provide an update.

Neurochem announced in April 2007 that an adjustment to the initial statistical model, as set out in the statistical plan, would be necessary to provide accurate results. The procedure to arrive at a reliable model involves a detailed analysis of potential confounding factors, and Dr. Aisen will present on the progress to date. In addition, Dr. Aisen will provide an update on the progress in the analysis of the Phase III clinical trial primary endpoint data. Some preliminary descriptive data shows numerical differences in favor of tramiprosate (ALZHEMED(TM)) on the primary clinical endpoint and also shows differences between groups on the primary disease modification endpoint as measured by magnetic resonance imaging (MRI). However, work regarding the adjustment of the statistical model is ongoing and, therefore results of the Phase III clinical trial cannot be derived from the preliminary data nor can statistical significance be assigned at this time. Accordingly, no predictions or conclusions can yet be made regarding the outcome of the Phase III study.