Condensed Consolidated 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	$ 2,093	$ 0	$ 3,497	$ 0
Operating expenses:
Research and development	47,260	33,125	94,370	57,614
General and administrative	13,416	9,067	25,969	16,503
Total operating expenses	60,676	42,192	120,339	74,117
Loss from operations	(58,583)	(42,192)	(116,842)	(74,117)
Other (expense) income:
Change in fair value of success payment liability	(662)	938	76	2,615
Interest and other income, net	5,438	308	10,984	390
Total other income, net	4,776	1,246	11,060	3,005
Loss before provision for income taxes	(53,807)	(40,946)	(105,782)	(71,112)
Provision for income taxes	(176)	0	(176)	0
Net loss	$ (53,983)	$ (40,946)	$ (105,958)	$ (71,112)
Net loss per common share attributable to common stockholders, basic	$ (0.87)	$ (0.84)	$ (1.71)	$ (1.46)
Net loss per common share attributable to common stockholders, diluted	$ (0.87)	$ (0.84)	$ (1.71)	$ (1.46)
Weighted-average common shares used in net loss per share attributable to common stockholders, basic	61,953,992	48,674,873	61,871,158	48,623,330
Weighted-average common shares used in net loss per share attributable to common stockholders, diluted	61,953,992	48,674,873	61,871,158	48,623,330
Comprehensive Loss:
Net loss	$ (53,983)	$ (40,946)	$ (105,958)	$ (71,112)
Other comprehensive income (loss):
Unrealized income (loss) on marketable securities	(517)	(206)	(60)	(710)
Comprehensive loss	$ (54,500)	$ (41,152)	$ (106,018)	$ (71,822)