Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Statement [Abstract]
Collaboration revenue	$ 9,245	$ 7,802
Operating expenses:
Research and development	18,686	47,275
General and administrative	11,560	18,328
Total operating expenses	30,246	65,603
Other income (expense):
Interest income	2,697	2,621
Interest expense	(1,002)	(983)
Total other income, net	1,695	1,638
Net loss	(19,306)	(56,163)
Unrealized (loss) gain on marketable securities	(101)	164
Comprehensive loss	(19,407)	(55,999)
Net loss attributable to common stockholders — basic	(19,306)	(56,163)
Net loss attributable to common stockholders — diluted	$ (19,306)	$ (56,163)
Net loss per share attributable to common stockholders — basic (in dollars per share)	$ (0.16)	$ (0.52)
Net loss per share attributable to common stockholders — diluted (in dollars per share)	$ (0.16)	$ (0.52)
Weighted-average number of shares of common stock used in net loss per share attributable to common stockholders — basic (in shares)	121,424,953	107,514,655
Weighted-average number of shares of common stock used in net loss per share attributable to common stockholders — diluted (in shares)	121,424,953	107,514,655