CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Income Statement [Abstract]
Collaboration Revenue—from related parties	$ 9,466	$ 9,622
Revenue from Contract with Customer, Product and Service [Extensible Enumeration]	us-gaap:RevenueFromRelatedParties	us-gaap:RevenueFromRelatedParties
Operating expenses:
Research and development	$ 42,227	$ 35,944
General and administrative	12,565	10,611
Total operating expenses	54,792	46,555
Loss from operations	(45,326)	(36,933)
Other income (expense):
Interest and other Income	4,453	290
Interest and other expense	(55)	(41)
Total other income:	4,398	249
Net loss	(40,928)	(36,684)
Other comprehensive loss:
Unrealized (loss) gain on marketable securities	1,911	(2,556)
Total comprehensive loss	(39,017)	(39,240)
Net loss	$ (40,928)	$ (36,684)
Net loss per share, basic and diluted	$ (0.70)	$ (0.71)
Net loss per share, basic and diluted	$ (0.70)	$ (0.71)
Weighted average common shares outstanding, basic and diluted	58,187,038	51,651,125
Weighted average common shares outstanding, basic and diluted	58,187,038	51,651,125