PFE bought Idun five years ago (#msg-5533614) to acquire the company’s lead drug, a phase-2 caspase inhibitor for liver transplants secondary to HCV. After having touted this drug during investor presentations in 2007-2008, PFE stopped talking about it and the drug is not included in the PFE’s Jan 2010 pipeline chart (#msg-49123118).
All told, it’s reasonable to infer that PFE is taking a significant loss on the Idun round trip.