After a seven-year search, scientists have found the approximate location of the gene responsible for a form of the degenerative disease that killed baseball great Lou Gehrig, it was reported.

By zeroing in on the gene, researchers have opened the door to identifying the gene itself, determining its function and possibly to treating or preventing the currently untreatable disease.The disorder, called amyotrophic lateral sclerosis or ALS, strikes up to 5,000 Americans annually.