Segment Information (Tables)

6 Months Ended

Jun. 30, 2025

Segment Reporting [Abstract]

Summary of Segment Performance and Make Decisions About Resource Allocation

The following table contains information on segment profit or loss, including significant segment expenses (in thousands):

	THREE MONTHS ENDED JUNE 30,						SIX MONTHS ENDED JUNE 30,
	2025			2024			2025			2024
Revenue	$	—		$	—		$	—		$	251
Less:
AB-101 (AlloNK)		8,686			4,600			16,342			7,889
Other programs(a)		—			15			—			62
Personnel-related		9,640			6,991			19,205			13,806
Other(b)		4,484			4,584			9,435			9,175
Other income (expense), net		1,556			(1,653	)		3,417			(1,125	)
Net loss	$	(21,254	)	$	(17,843	)	$	(41,565	)	$	(31,806	)

(a)Other programs primarily include costs associated with AB-201.

(b)Other primarily includes consultant, depreciation, rent, common area maintenance, lab supplies, legal, and insurance expenses.