Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Operating expenses:
Research and development	$ 14,803	$ 12,024	$ 29,263	$ 19,469
General and administrative	8,766	4,613	17,693	7,949
Total operating expenses	23,569	16,637	46,956	27,418
Loss from operations	(23,569)	(16,637)	(46,956)	(27,418)
Grant income	(1,259)	2,589	975	4,420
Other income, net	493	74	666	158
Net loss	(24,335)	(13,974)	(45,315)	(22,840)
Unrealized (loss) gain on available-for-sale securities	(469)	9	(1,537)	4
Comprehensive loss attributable to common stockholders	$ (24,804)	$ (13,965)	$ (46,852)	$ (22,836)
Net loss per share attributable to common stockholders, basic and diluted	$ (0.65)	$ (0.38)	$ (1.20)	$ (0.63)
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic and diluted	37,667,971	37,214,602	37,630,856	36,499,004