Weill Cornell Medical College neurologist Dr. Norman Relkin reported new findings today from the Phase 3 clinical trial of IVIG (intravenous immunoglobulin) in mild to moderate Alzheimer's disease at the Alzheimer's Association International Conference (AAIC) in Boston, Mass. While the primary study outcomes were negative, observations from the subgroup analyses include whether there may be a dose-dependent reduction of beta amyloid in the blood and brain of IVIG-treated Alzheimer's patients who have the ApoE4 genotype.