Unaudited Condensed Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Collaboration revenue	$ 1,057	$ 2,365	$ 3,105	$ 3,954
Operating expenses:
Research and development	14,924	14,086	30,789	24,270
General and administrative	6,881	5,540	13,345	10,487
Total operating expenses	21,805	19,626	44,134	34,757
Loss from operations	(20,748)	(17,261)	(41,029)	(30,803)
Other income:
Interest income	3,240	373	6,062	505
Total other income	3,240	373	6,062	505
Net loss	(17,508)	(16,888)	(34,967)	(30,298)
Other comprehensive loss:
Unrealized gain (loss) on available-for-sale securities, net	(321)	(340)	475	(1,637)
Comprehensive loss	$ (17,829)	$ (17,228)	$ (34,492)	$ (31,935)
Net loss per common share, basic	$ (0.42)	$ (0.41)	$ (0.84)	$ (0.73)
Net loss per common share, diluted	$ (0.42)	$ (0.41)	$ (0.84)	$ (0.73)
Weighted-average shares of common stock outstanding, basic	41,836,238	41,448,743	41,800,304	41,382,481
Weighted-average shares of common stock outstanding diluted	41,836,238	41,448,743	41,800,304	41,382,481