Pfizer's decision to cut all allergy and respiratory drug development work came as good news for Rigel Pharmaceuticals, even though it meant the end of the two developers' pact for allergic asthma drug candidate R343. The Pfizer bought into Rigel's portfolio of inhaled small molecule syk inhibitors in 2005, and spent the last several years investing the time and money necessary to develop R343 into a mid-stage candidate. Essentially, notes Xconomy, Rigel "basically got handed a big gift...