CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Operating expenses:
Research and development	$ 93	$ 34,824	$ 12,266	$ 65,543
General and administrative	7,169	12,480	17,829	24,992
Restructuring costs	512		9,976
Total operating expenses	7,774	47,304	40,071	90,535
Loss from operations	(7,774)	(47,304)	(40,071)	(90,535)
Total other income (loss), net:
Interest income	1,360	1,516	2,606	2,841
Other income (loss), net	338	521	1,090	1,244
Net loss	$ (6,076)	$ (45,267)	$ (36,375)	$ (86,450)
Net loss per share - basic	$ (0.05)	$ (0.48)	$ (0.32)	$ (0.92)
Net loss per share - diluted	$ (0.05)	$ (0.48)	$ (0.32)	$ (0.92)
Weighted-average common shares outstanding - basic	115,127,044	94,625,837	114,908,885	93,968,407
Weighted-average common shares outstanding - diluted	115,127,044	94,625,837	114,908,885	93,968,407
Comprehensive loss:
Net Income (Loss)	$ (6,076)	$ (45,267)	$ (36,375)	$ (86,450)
Other comprehensive income (loss), net of tax:
Unrealized (loss) gain on available-for-sale securities	(1)	76	(77)	243
Total other comprehensive income (loss)	(1)	76	(77)	243
Comprehensive loss	$ (6,077)	$ (45,191)	$ (36,452)	$ (86,207)