CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Operating expenses:
Research and development	$ 10,365	$ 6,991	$ 20,388	$ 24,327
General and administrative	2,108	2,056	6,511	7,493
Total operating expenses	12,473	9,047	26,899	31,820
Loss from operations	(12,473)	(9,047)	(26,899)	(31,820)
Interest income and other expense, net	225	(11)	336	(7)
Sublease income - related party	147	94	439	94
Loss from equity method investment	(2,730)	(1,709)	(5,367)	(2,272)
Net loss	$ (14,831)	$ (10,673)	$ (31,491)	$ (34,005)
Net loss per share, basic	$ (0.32)	$ (0.24)	$ (0.68)	$ (0.84)
Net loss per share, diluted	$ (0.26)	$ (0.24)	$ (0.62)	$ (0.84)
Shares used to compute net loss per share, basic	46,553,511	43,947,004	46,553,511	40,270,954
Shares used to compute net loss per share, diluted	46,553,511	43,947,004	46,553,511	40,270,954
Other comprehensive loss:
Unrealized gain (loss) on marketable securities	$ 5	$ (2)	$ (77)	$ (4)
Cumulative foreign currency translation adjustment	(1,537)	(10)	(2,985)	1,375
Comprehensive loss	$ (16,363)	$ (10,685)	$ (34,553)	$ (32,634)