Segment Information (Tables)

3 Months Ended

Mar. 31, 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 MARCH 31,
	2025			2024
Revenue	$	—		$	251
Less:
AB-101		7,545			3,289
Other programs(a)		14			47
Personnel-related		9,573			6,815
Other(b)		5,039			4,592
Other income, net		1,860			529
Net loss	$	(20,311	)	$	(13,963	)

(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.