CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flows from operating activities:
Net loss	$ (30,531)	$ (25,180)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	2	221
Non-cash lease cost	512	476
Share-based compensation	4,136	4,027
Changes in operating assets and liabilities:
Collaboration receivable, current and non-current - related party	21,396	0
Other receivables	(3,189)	(1,004)
Prepaid expenses and other current assets	982	(5,192)
Other assets	1	0
Accounts payable	1,318	693
Accrued expenses and other current liabilities	3,454	(3,372)
Deferred revenue, current and non-current	(254)	(492)
Deferred revenue - related party, current and non-current	(9,966)	(1,034)
Other long-term liabilities	(62)	(24)
Operating lease liability	(605)	(536)
Net cash provided by (used in) operating activities	(12,806)	(31,417)
Cash flows from investing activities:
Net decrease in cash and cash equivalents:	(12,806)	(31,417)
Cash, cash equivalents and restricted cash at beginning of period	76,333	109,107
Cash, cash equivalents and restricted cash at end of period	$ 63,527	$ 77,690