Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2022

Accounting Policies [Abstract]

Schedule of Concentration of Risk

The Company’s partners in collaboration and license agreements who represent 10% or more of the Company’s total revenue are as follows:

	Three Months Ended June 30,		Six Months Ended June 30,
	2022	2021	2022	2021
Customer A	*	98%	*	96%
Customer B	99%	*	98%	*
Total	99%	98%	98%	96%

* Less than 10%

The Company’s partners in collaboration and license agreements who represent 10% or more of the Company’s total accounts receivable are as follows:

	June 30, 2022	December 31, 2021
Customer A	0%	100%
Total	0%	100%

Schedule of Revenues by Geographic Region

The Company’s total revenues by geographic region, based on the location of the customer, are as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
Netherlands	$	160	$	267	$	1,352	$	659
Switzerland		—		14,297		—		15,902
United States		2		16		30		19
Total revenue	$	162	$	14,580	$	1,382	$	16,580

Schedule of Impact of Adoption of New Accounting Standard

The following table summarizes the effect of the adoption of ASC 842 on the condensed statement of cash flows for the six months ended June 30, 2021 (in thousands):

	Pre ASC 842					After ASC 842
	Six Months Ended		ASC 842			Six Months Ended
	June 30, 2021		Adjustments			June 30, 2021
Adjustments to reconcile net loss to net cash    used in operating activities
Amortization of right-of-use assets	$	—	$	737		$	737
Changes in operating assets and liabilities
Operating lease liabilities		—		(737	)		(737	)
Supplemental disclosures of noncash investing and financing information
Decrease in right-of-use assets due to reduction in operating lease liabilities upon modification		—		(478	)		(478	)