Original sentence: Dirucotide (MBP8298), a synthetic myelin basic protein (MBP) consisting of 17 aminoacids, is currently in  FDA fast-track for approval for SPMS
Edited sentence: Dirucotide (MBP8298), a synthetic myelin basic protein (MBP) consisting of 17 aminoacids, formerly in  FDA fast-track for approval for SPMS, could be pulled from trials after two consecutive failures