Also

Amgen Inc. said a pivotal-stage trial shows that its arthritis drug Enbrel also is an effective treatment for psoriasis, a market that could dramatically expand the drug’s sales potential.

Byron Pollitt, chief financial officer of Walt Disney’s Parks and Resorts group, is resigning to join his former boss, Paul Pressler, the new chief executive of GapInc. Pollitt will become Gap’s chief financial officer, said sources close to Disney.