Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Operating expenses:
Research and development	$ 9,318	$ 4,431	$ 21,069	$ 10,826
General and administrative	3,434	668	8,125	2,475
Total operating expenses	12,752	5,099	29,194	13,301
Loss from operations	(12,752)	(5,099)	(29,194)	(13,301)
Other income:
Other income	17	5	31	89
Net loss	(12,735)	(5,094)	(29,163)	(13,212)
Unrealized gain (loss) on short-term investments	12	(4)	17
Comprehensive loss	$ (12,723)	$ (5,098)	$ (29,146)	$ (13,212)
Net loss per share attributable to common stockholders, basic and diluted	$ (0.52)	$ (2.48)	$ (1.82)	$ (6.54)
Weighted-average shares used in computing net loss per share, basic and diluted	24,396,798	2,052,838	16,025,813	2,021,031