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UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS    
Revenue $ 0 $ 8,196
Operating expenses    
Research and development (22,019) (25,732)
General and administrative (11,773) (11,204)
Total operating expenses (33,792) (36,936)
Operating loss (33,792) (28,740)
Interest income 952 659
Other income, net 5,430 7,130
Loss before income taxes (27,410) (20,951)
Income taxes (2) (127)
Net loss attributable to ordinary shareholders $ (27,412) $ (21,078)
Net loss per ordinary share - Basic and diluted    
Basic and diluted (in dollars per share) $ (0.04) $ (0.04)
Weighted average shares outstanding:    
Basic and diluted (in shares) 627,945,243 562,381,995