Condensed Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating expenses:
Research and development (including related party expenses of $1,612 and $218 for the three months ended March 31, 2021 and 2020, respectively)	$ 17,258	$ 24,315
General and administrative	5,885	3,281
Total operating expenses	23,143	27,596
Loss from operations	(23,143)	(27,596)
Other income (expense), net:
Interest expense		(7)
Interest income	61	135
Grant income		329
Foreign currency transaction gains (losses)	1,862	(3)
Total other income (expense), net	1,923	454
Net loss	$ (21,220)	$ (27,142)
Net loss per share, basic and diluted	$ (0.41)	$ (6.70)
Weighted-average shares outstanding, basic and diluted	51,174,978	4,049,848