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Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
REVENUE |  |  |
Contract revenue |  |  | $ 646
OPERATING EXPENSES |  |  |
Research and development | 32,780 | 15,174 | 8,207
General and administrative | 21,677 | 8,657 | 3,501
Total operating expenses | 54,457 | 23,831 | 11,708
Operating loss | (54,457) | (23,831) | (11,062)
OTHER INCOME (EXPENSES) |  |  |
Interest expense, net | (826) | (599) | (373)
Loss from continuing operations | (55,283) | (24,430) | (11,435)
Gain (loss) from discontinued operations |  | 1,082 | (379)
Net loss | $ (55,283) | $ (23,348) | $ (11,814)
Basic and diluted net loss per share: |  |  |
Loss from continuing operations (in Dollars per share) | $ (3.42) | $ (2.00) | $ (1.90)
Net loss (in Dollars per share) | $ (3.42) | $ (1.91) | $ (1.96)
Weighted-average common shares used to compute basic and diluted net loss per share (in Shares) | 16,163 | 12,223 | 6,013

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