Condensed Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Operating expenses:
Research and development	$ 12,667	$ 423	$ 18,044	$ 423
General and administrative	4,866	869	8,857	990
Total operating expenses	17,533	1,292	26,901	1,413
Loss from operations	(17,533)	(1,292)	(26,901)	(1,413)
Other income (expense), net:
Other income (expense), net	4		4
Related party convertible note interest expense		(20)		(40)
Change in fair value of the Series A redeemable convertible preferred stock tranche liability			(10,341)
Total other income (expense), net	4	(20)	(10,337)	(40)
Net loss and comprehensive loss	$ (17,529)	$ (1,312)	$ (37,238)	$ (1,453)
Net loss per share attributable to common stockholders—basic and diluted	$ (3.45)	$ (0.56)	$ (8.45)	$ (1.25)
Weighted-average shares used in computing net loss per share— basic and diluted	5,087,008	2,329,402	4,405,357	1,164,700