Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenue:
Revenue	$ 1,535	$ 1,000
Operating expenses:
Research and development	36,936	16,956
General and administrative	7,310	6,445
Total operating expenses	44,246	23,401
Loss from operations	(42,711)	(22,401)
Other income (expense):
Interest (expense) income, net	(245)	77
Other income	74
Gain on extinguishment of Paycheck Protection Program loan	722
Change in fair value of note payable	(33)
Share of loss from equity method investment		(9)
Net loss	(42,193)	(22,333)
Deemed dividends	(4,127)
Net loss available to common stockholders	$ (46,320)	$ (22,333)
Weighted-average common shares outstanding used in computing net loss per share available to common stockholders, basic	12,291,600	9,168,744
Weighted-average common shares outstanding used in computing net loss per share available to common stockholders, diluted	12,291,600	9,168,744
Net loss per share to common stockholders, basic	$ (3.77)	$ (2.44)
Net loss per share to common stockholders, diluted	$ (3.77)	$ (2.44)