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Condensed Statements of Operations (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
REVENUE        
Royalty revenue $ 108,780 $ 81,003 $ 222,780 $ 138,003
Total revenue 108,780 81,003 222,780 138,003
EXPENSES        
Research and development 5,398,305 11,116,323 10,581,522 25,980,744
General and administration 1,948,995 1,989,103 3,780,847 3,582,659
Depreciation and amortization 30,933 40,519 61,799 82,463
Total expenses 7,378,233 13,145,945 14,424,168 29,645,866
OTHER        
Convertible note fair value adjustment 15,953 (1,753,000) (3,194,385) (2,392,000)
Interest expense (92,047) (172,000) (216,243) (344,000)
Other income   13,000   13,000
Interest income 1,431 1,711 3,423 4,956
NET LOSS $ (7,344,116) $ (14,975,231) $ (17,608,593) $ (32,225,907)
BASIC AND DILUTED NET LOSS PER SHARE (in dollars per share) $ (0.36) $ (0.96) $ (0.89) $ (2.16)
WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING        
Basic (in shares) 20,202,737 15,664,225 19,790,109 14,900,067
Diluted (in shares) 20,202,737 15,664,225 19,790,109 14,900,067