Related Party Transactions - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022	Aug. 31, 2022
Related Party Transaction [Line Items]
Amount due to related party	$ 61		$ 61		$ 56
Consulting fees to members of management and board of directors	100	$ 100	$ 200	$ 300
ElevateBio Technologies, Inc | Management and Administrative Services Agreement
Related Party Transaction [Line Items]
Lease expiration term			The agreement has an initial term of five years and will automatically renew for successive one year terms, unless earlier terminated under the terms of the agreement.
BaseCamp
Related Party Transaction [Line Items]
Prepaid expenses						$ 2,000
BaseCamp | DMS Agreement
Related Party Transaction [Line Items]
Lease expiration term			The agreement will expire upon the later of (a) five years from the effective date of January 1, 2019 or (b) the completion of services under all work orders executed prior to the fifth anniversary of the effective date, unless earlier terminated under the terms of the agreement.
ElevateBio and Affiliates
Related Party Transaction [Line Items]
Prepaid expenses	1,500		$ 1,500		2,000
Expenses related to services with related party	500	$ 800	700	$ 2,000
Amount due to related party	0		0		100
Marker Therapeutics, Inc.
Related Party Transaction [Line Items]
Amount due to related party	100		100		$ 0
Costs incurred under agreement	$ 100		$ 100