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 (includes related party amounts of $230, $254, $433 and $462, respectively)	$ 14,676	$ 9,511	$ 32,085	$ 34,112
General and administrative (includes related party amounts of $0, $0, $0 and $116, respectively)	5,722	1,675	11,060	2,422
Total operating expenses	20,398	11,186	43,145	36,534
Loss from operations	(20,398)	(11,186)	(43,145)	(36,534)
Other (income) expense:
Other (income) expense	(380)	44	(395)	44
Interest expense - related party				99
Change in fair value of notes and derivative - related party				11,051
Change in fair value of Series A tranche liability		4,329		5,476
Total other (income) expense	(380)	4,373	(395)	16,670
Net loss	(20,018)	(15,559)	(42,750)	(53,204)
Deemed dividend				(1,552)
Net loss attributable to common shareholders	(20,018)	(15,559)	(42,750)	(54,756)
Net loss	(20,018)	(15,559)	(42,750)	(53,204)
Unrealized loss on marketable securities	(279)		(1,221)
Foreign currency translation	(54)	(14)	(12)	(12)
Comprehensive loss	$ (20,351)	$ (15,573)	$ (43,983)	$ (53,216)
Net loss per share attributable to common shareholders, basic	$ (0.39)	$ (4.31)	$ (0.84)	$ (17.69)
Net loss per share attributable to common shareholders, diluted	$ (0.39)	$ (4.31)	$ (0.84)	$ (17.69)
Shares used to compute basic net loss per share attributable to common shareholders	50,848,391	3,609,462	50,717,548	3,095,244
Shares used to compute diluted net loss per share attributable to common shareholders	50,848,391	3,609,462	50,717,548	3,095,244