Infinity Pharmaceuticals, Inc. announced its second potent, oral PI3K-delta,gamma inhibitor, IPI-443. Nonclinical studies of IPI-443 are now under way, which are designed to enable the initiation of Phase 1 clinical development. Infinity is developing a portfolio of PI3K inhibitors which includes IPI-145 and IPI-443, potent, oral inhibitors of PI3K-delta and PI3K-gamma, as well as retaspimycin hydrochloride, a potent and selective Hsp90 inhibitor. Infinity anticipates achieving the following development milestones in 2013: IPI-145 in Hematologic Malignancies:- First half of 2013: Initiate up to five cohort expansions in the ongoing Phase 1 trial in patients with advanced hematologic malignancies; Define the recommended Phase 2 dose; In 2013: Initiate at least two additional trials. IPI-145 in Inflammation:- First half of 2013: Initiate a Phase 2 trial in patients with rheumatoid arthritis; Second half of 2013: Provide update on Phase 2a trial in patients with mild, allergic asthma. PI3K Pipeline Expansion:- Second half of 2013: Complete nonclinical studies of IPI-443 to enable Phase 1 development. Retaspimycin HCl in NSCLC:- First half of 2013: Report topline overall survival data from Phase 2 trial in combination with docetaxel; Provide update on Phase 1b/2 trial in combination with everolimus.

The company provided earnings guidance for 2013. The company expects net loss for 2013 to range from $115 million to $125 million.