Republican senators call on FDA to expand access to investigational drugs to treat Alzheimer’s, cancer and amyotrophic lateral sclerosis (ALS) by widening the scope of a generations-old Parallel Track program that currently grants only patients with AIDS and other HIV-related diseases access to certain drugs shown to be safe but which haven’t completed FDA efficacy trials. The lawmakers, some of whom also co-sponsored right-to-try legislation, said the move would increase patient access to life-saving drugs and therapies and lower costs...