Pharmaceutical US drug discovery firm Infinity Pharmaceuticals (Nasdaq: INFI) saw its shares plummet 20% to $11 in pre-marketing trading yesterday morning when it announced disappointing interim data from its Phase II, double-blind, randomized, placebo-controlled study of saridegib (IPI-926) in patients with metastatic or locally advanced, inoperable chondrosarcoma. 19 June 2012