Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2021

The Trustees of the University of Pennsylvania [Member]

Summary of Expenses Incurred by Company

Expenses incurred by the Company related to the license from Penn were recorded as follows (in thousands):

	Years Ended December 31,
	2021		2020		2019
Cost of revenues	$	8,046	$	39	$	—
Research and development		—		—		200
General and administrative		706		821		905
	$	8,752	$	860	$	1,105

GlaxoSmithKline LLC [Member]

Summary of Expenses Incurred by Company

Expenses incurred by the Company related to the license from GSK were recorded as follows (in thousands):

	Years Ended December 31,
	2021		2020		2019
Cost of revenues:
Royalties on net sales of Zolgensma	$	43,161	$	26,278	$	5,822
Other cost of revenues		626		9,398		2,419
Total cost of revenues		43,787		35,676		8,241
General and administrative		889		1,046		928
	$	44,676	$	36,722	$	9,169