Condensed Consolidated Statements of Operations and Comprehensive Loss (unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Collaboration revenue	$ 544	$ 359	$ 1,412	$ 1,352
Operating expenses:
Research and development	12,368	10,048	35,763	29,346
General and administrative	5,003	5,137	14,700	13,157
Loss on impairment of long-lived assets			1,592
Total operating expenses	17,371	15,185	52,055	42,503
Loss from operations	(16,827)	(14,826)	(50,643)	(41,151)
Other income:
Interest income	1,192	60	3,161	108
Total other income	1,192	60	3,161	108
Loss before income tax expense	(15,635)	(14,766)	(47,482)	(41,043)
Income tax expense	(16)		(42)
Net loss	(15,651)	(14,766)	(47,524)	(41,043)
Unrealized holding gain (loss) on short-term investments, net of tax	20		(17)
Comprehensive loss	$ (15,631)	$ (14,766)	$ (47,541)	$ (41,043)
Net loss per share attributable to common stockholders- basic	$ (0.27)	$ (0.4)	$ (1.04)	$ (1.47)
Net loss per share attributable to common stockholders- diluted	$ (0.27)	$ (0.4)	$ (1.04)	$ (1.47)
Weighted-average common shares outstanding-basic	56,953,685	36,826,364	45,894,643	28,014,434
Weighted-average common shares outstanding-diluted	56,953,685	36,826,364	45,894,643	28,014,434