CONDENSED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Operating expenses:
Research and development	$ 11,010	$ 13,528	$ 36,104	$ 41,377
General and administrative	4,608	5,711	15,743	16,761
Total operating expenses	15,618	19,239	51,847	58,138
Loss from operations	(15,618)	(19,239)	(51,847)	(58,138)
Other income, net	1,317	328	3,591	705
Net loss	$ (14,301)	$ (18,911)	$ (48,256)	$ (57,433)
Net loss per common share
Basic (in dollars per share)	$ (0.51)	$ (0.68)	$ (1.73)	$ (2.07)
Diluted (in dollars per share)	$ (0.51)	$ (0.68)	$ (1.73)	$ (2.07)
Weighted average shares outstanding
Basic (in shares)	27,839,968	27,748,844	27,814,655	27,734,271
Diluted (in shares)	27,839,968	27,748,844	27,814,655	27,734,271
Comprehensive loss:
Net loss	$ (14,301)	$ (18,911)	$ (48,256)	$ (57,433)
Unrealized gain (loss) on marketable securities	322	(56)	891	(1,733)
Total comprehensive loss	$ (13,979)	$ (18,967)	$ (47,365)	$ (59,166)