Consolidated Statements of Net Loss and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
OPERATING EXPENSES
Research and development	$ 19,660	$ 8,731	$ 46,665	$ 23,228
General and administrative	4,699	2,684	12,581	5,924
Total operating expenses	24,359	11,415	59,246	29,152
Loss from operations	(24,359)	(11,415)	(59,246)	(29,152)
OTHER INCOME/(EXPENSES)
Interest and other income/(expenses)	437	(11)	1,354	(62)
NET LOSS	(23,922)	(11,426)	(57,892)	(29,214)
Other comprehensive income
Foreign currency translation	134	39	124	121
COMPREHENSIVE LOSS	$ (23,788)	$ (11,387)	$ (57,768)	$ (29,093)
Net loss per share attributable to common stockholders, basic and diluted	$ (0.70)	$ (0.42)	$ (1.69)	$ (1.08)
Weighted average common shares outstanding, basic and diluted	34,371,927	27,330,579	34,253,739	26,945,432

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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