Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenue:
Collaboration revenue	$ 1,125	$ 863
Operating expenses:
Research and development	36,506	19,580
General and administrative	12,222	5,004
Total operating expenses	48,728	24,584
Loss from operations	(47,603)	(23,721)
Other income (expense):
Interest and other income, net	136	139
Interest expense	(174)	(13)
Change in fair value of warrant liability	(1,318)	(144)
Net loss	(48,959)	(23,739)
Other comprehensive loss:
Unrealized loss on marketable securities	(58)	(8)
Comprehensive loss	$ (49,017)	$ (23,747)
Net loss per share, basic and diluted	$ (3.95)	$ (10.56)
Weighted-average shares used in computing net loss per share, basic and diluted	12,384,015	2,248,687