Wall Street Journal -- New research has pinpointed a gene that could improve predictions of who will develop Alzheimer’s and at what age. Deane Drug Discovery Institute, said that if other researchers get the same findings, it could mean a drastic improvement in the accuracy of predictions about the disease as well as the approximate age within a five-to-seven-year window when individuals might begin noticing symptoms. And if drugs to slow the course of Alzheimer’s become available, the gene could help identify who should begin taking those drugs earlier.