CONDENSED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating expenses
Research and development	$ 13,539	$ 7,260
General and administrative	5,942	2,148
Total operating expenses	19,481	9,408
Loss from operations	(19,481)	(9,408)
Other income (expense), net:
Change in fair value of preferred stock purchase right liability		578
Interest income	110	124
Other expense, net	(2)
Total other income (expense), net	108	702
Net loss	(19,373)	(8,706)
Comprehensive loss:
Net loss	(19,373)	(8,706)
Other comprehensive gain (loss)	31	(1)
Comprehensive loss	$ (19,342)	$ (8,707)
Net loss per share, basic and diluted	$ (0.59)	$ (5.41)
Weighted average shares used to compute net loss per share, basic and diluted	32,739,610	1,609,184