6. Accrued Expenses

At June 30, 2026 and December 31, 2025, accrued expenses consist of the following (in thousands):


	As of
	June 30,		December 31,
	2026		2025
Accrued external research and development expense	$	24,580	$	14,205
Accrued payroll and related expenses		20,033		20,114
Accrued professional services expense		9,206		3,829
Accrued other		1,112		1,418
	$	54,931	$	39,566