Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenue
Collaboration and license revenue	$ 3,021	$ 2,027
Revenue from Contract with Customer, Products and Services [Extensible List]	http://www.tscan.com/#CollaborationAndLicenseRevenueMember	http://www.tscan.com/#CollaborationAndLicenseRevenueMember
Operating expenses:
Research and development	$ 14,690	$ 7,339
General and administrative	4,494	2,606
Total operating expenses	19,184	9,945
Loss from operations	(16,163)	(7,918)
Other income:
Interest and other income (loss), net	7	6
Net loss	$ (16,156)	$ (7,912)
Net loss per share, basic and diluted	$ (0.67)	$ (6.49)
Weighted average common shares outstanding—basic and diluted	23,974,642	1,218,909