The FDA has granted orphan drug status to the immunosuppressant CellCept, being developed by Roche and Aspreva. CellCept is currently in a late-stage trial for Myasthenia Gravis, a rare immune system ailment. Report [1]
Links:
[1] http://www.forbes.com/markets/feeds/afx/2006/01/03/afx2425323.html