Accrued Liabilities and Other Liabilities

12 Months Ended

Dec. 31, 2021

Accrued Liabilities and Other Liabilities [Abstract]

Accrued Liabilities and Other Liabilities

Accrued liabilities consisted of the following (in thousands):

	December 31,
	2021		2020
Accrued clinical expense	$	29,038	$	19,221
Accrued manufacturing expense	34,153		13,019
Accrued development expense	10,910		5,439
Accrued compensation and benefits	25,845		13,964
Other accrued expenses	8,549		1,712
	$	108,495	$	53,355

The long-term liabilities balance of $2.2 million as of December 31, 2021, and $2.0 million as of December 31, 2020, consisted primarily of clinical trial-related liabilities.