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Condensed Consolidated Statements of Operations (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Revenues:    
Collaboration revenue $ 895 $ 471
Grant revenue 39 148
Service and license revenue 8 8
Total revenues 942 627
Operating expenses:    
Research and development 20,067 22,220
General and administrative 8,169 4,859
Total operating expenses 28,236 27,079
Loss from operations (27,294) (26,452)
Other income (expense):    
Interest income 225 27
Interest expense   (247)
Other income, net 46 455
Net loss $ (27,023) $ (26,217)
Basic and diluted net loss per share $ (0.70) $ (0.97)
Weighted average shares used to compute basic and diluted net loss per share 38,472 27,065