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Segment and Geographic Information (Tables)

12 Months Ended

Dec. 31, 2022

Segment Reporting [Abstract]

Schedule of Revenue by Geographic Area

Geographic revenues, which are based on the region that revenue is generated, are as follows (in thousands):

		Years Ended December 31,
		2022				2021				2020
China		$	84,631			$	55,640			$	73,361
Europe			33,820				131,243				17,954
Japan			9,764				2,305				19,824
United States			12,519				46,121				65,180
Total revenue		$	140,734			$	235,309			$	176,319

Schedule of Long Lived Assets by Geographic Area

Property and equipment, net by geographic location are as follows (in thousands):

		December 31,
		2022				2021
United States		$	10,094			$	15,002
China			10,511				13,275
Total property and equipment		$	20,605			$	28,277

Summary of Finance and Operating Lease Right of Use Assets by Geographical Location

Finance lease right-of-use assets and operating lease right-of-use assets, net by geographic location are as follows (in thousands):

		December 31,
		2022				2021
United States		$	424			$	730
China			11				31
Total finance lease right-of-use assets		$	435			$	761
United States		$	76,273			$	87,113
China			3,620				3,999
Total operating lease right-of-use assets		$	79,893			$	91,112

Schedule of Customer Concentration by Collaboration Partners and Distribution Entity

The Company’s revenues to date have been generated from the following collaboration partners and distribution entity that individually accounted for 10% or more of the Company’s total revenue or accounts receivable:

		Percentage of Revenue												Percentage of Accounts Receivable
		Years Ended December 31,												December 31,
		2022				2021				2020				2022				2021
Falikang — Related party			51	%			15	%			—	%			65	%			—	%
Astellas — Related party			31	%			57	%			21	%			9	%			63	%
AstraZeneca			9	%			20	%			37	%			16	%			34	%

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Summary of Finance and Operating Lease Right of Use Assets by Geographical Location.

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Tabular disclosure of long-lived assets, excluding financial instruments, long-term customer relationships of a financial institution, mortgage rights, deferred policy acquisition costs, and deferred tax assets, by geographic areas located in the entity's country of domicile and foreign countries in which the entity holds assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-Subparagraph b
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Tabular disclosure of revenue from external customers by geographic areas attributed to the entity's country of domicile and to foreign countries from which the entity derives revenue.

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Tabular disclosure of the extent of the entity's reliance on its major customers, if revenues from transactions with a single external customer amount to 10 percent or more of entity revenues, including the disclosure of that fact, the total amount of revenues from each such customer, and the identity of the reportable segment or segments reporting the revenues. The entity need not disclose the identity of a major customer or the amount of revenues that each segment reports from that customer. For these purposes, a group of companies known to the entity to be under common control is considered a single customer, and the federal government, a state government, a local government such as a county or municipality, or a foreign government is each considered a single customer.

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