Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating expenses:
Research and development	$ 10,241	$ 6,813
General and administrative	8,264	7,035
Total operating expenses	18,505	13,848
Loss from operations	(18,505)	(13,848)
Other income (expense):
Interest expense, net	(27)	(87)
Foreign exchange gain, net	45	8
Other income	36	168
Total other income, net	54	89
Net loss	(18,451)	(13,759)
Other comprehensive gain/(loss):
(Loss)/gain on foreign currency translation	(49)	59
Comprehensive loss	$ (18,500)	$ (13,700)
Net loss per common share, basic and diluted	$ (0.04)	$ (0.04)
Weighted-average common shares, basic and diluted	422,212,489	389,575,029