Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Related-party revenue	$ 0	$ 0	$ 1,182
Type of revenue description	Related-party revenue	Related-party revenue	Related-party revenue
Operating expenses:
Research and development	$ 98,400	$ 60,170	$ 28,961
General and administrative	29,036	23,385	14,809
Cost of services for related-party revenue			1,075
Total operating expenses	127,436	83,555	44,845
Loss from operations	(127,436)	(83,555)	(43,663)
Interest income	4,278	91	124
Other expense, net	(260)	(20)	(1,339)
Loss on early debt extinguishment			(621)
Loss before income taxes	(123,418)	(83,484)	(45,499)
Income tax (provision) benefit	(64)	21	(241)
Net loss	(123,482)	(83,463)	(45,740)
Cumulative dividends allocated to preferred stockholders			(5,202)
Net loss attributable to common stockholders	$ (123,482)	$ (83,463)	$ (50,942)
Net loss per share attributable to common stockholders, basic	$ (3.03)	$ (2.07)	$ (2.76)
Net loss per share attributable to common stockholders, diluted	$ (3.03)	$ (2.07)	$ (2.76)
Weighted-average shares of common stock used to compute net loss per share attributable to common stockholders, basic	40,699,612	40,308,050	18,485,343
Weighted-average shares of common stock used to compute net loss per share attributable to common stockholders, diluted	40,699,612	40,308,050	18,485,343