Related Party Transactions - Additional Information (Details)			1 Months Ended	3 Months Ended		6 Months Ended
	Jan. 31, 2022 USD ($) shares	Jan. 27, 2022 $ / shares shares	Nov. 30, 2017 TargetAntigen	Jun. 30, 2022 USD ($) TargetAntigen $ / shares	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) TargetAntigen $ / shares	Jun. 30, 2021 USD ($)	Dec. 31, 2021 $ / shares
Related Party Transaction [Line Items]
Rent expense incurred under operating lease				$ 43,500	$ 43,500	$ 87,000	$ 87,000
Revenue							850,000
Gross proceeds from issuance of common stock						$ 3,519,000	32,848,000
Common stock, par value | $ / shares				$ 0.0001		$ 0.0001		$ 0.0001
Surface Oncology, Inc.
Related Party Transaction [Line Items]
Number of target antigens against which antibodies are to be identified and selected | TargetAntigen			2	0		0
Revenue							$ 850,000
Common Stock | Stock Purchase Agreement | Friedberg Global-Macro Hedge Fund, Ltd
Related Party Transaction [Line Items]
Aggregate number of shares issued and sell | shares	2,801,801	5,945,943
Shares issued, price per share | $ / shares		$ 1.11
Common stock, par value | $ / shares		$ 0.0001
Common Stock | Private Placement
Related Party Transaction [Line Items]
Aggregate number of shares issued and sell | shares	8,747,744
Gross proceeds from issuance of common stock	$ 9,700,000