Subsequent events	3 Months Ended
Mar. 31, 2023
Subsequent events.
Subsequent events	15. Subsequent events On April 6, 2023, the Company entered into a deed of surrender related to its lease of office and laboratory space in Building 900, Babraham Research Campus, Cambridge, U.K. Pursuant to the deed, the lease was terminated effective immediately. In connection with the deed, the Company is required to pay termination-related fees totaling approximately $0.3 million.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI https://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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