sentences:  The researchers were led by Eric J. Sorenson, MD, from the Mayo Clinic in Rochester, Minnesota ""While this is very disappointing, at least it was definitive and gives, I think, a pretty definitive answer, at least for this strategy for this drug,"" Dr. Sorenson said.However, he added, ""there is still a great deal of evidence that the IGF-1 pathway can be beneficial to people who have ALS, but just not the way we administered it.