Consolidated Statements of Net Loss and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
OPERATING EXPENSES
Research and development	$ 30,059	$ 14,494	$ 48,681	$ 27,005
General and administrative	10,393	4,140	18,519	7,882
Total operating expenses	40,452	18,634	67,200	34,887
Loss from operations	(40,452)	(18,634)	(67,200)	(34,887)
OTHER INCOME, NET
Interest and other income, net	59	598	628	917
NET LOSS	(40,393)	(18,036)	(66,572)	(33,970)
Other comprehensive income
Foreign currency translation	(91)	(66)	(66)	(10)
COMPREHENSIVE LOSS	$ (40,484)	$ (18,102)	$ (66,638)	$ (33,980)
Net loss per share attributable to common stockholders, basic and diluted	$ (1.01)	$ (0.53)	$ (1.67)	$ (0.99)
Weighted average common shares outstanding, basic and diluted	39,972,174	34,193,666	39,862,878	34,193,666

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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