Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue
Collaboration and license revenue	$ 4,056	$ 2,848	$ 7,077	$ 4,875
Revenue from Contract with Customer, Products and Services [Extensible List]	http://www.tscan.com/#CollaborationAndLicenseRevenueMember	http://www.tscan.com/#CollaborationAndLicenseRevenueMember	http://www.tscan.com/#CollaborationAndLicenseRevenueMember	http://www.tscan.com/#CollaborationAndLicenseRevenueMember
Operating expenses:
Research and development	$ 14,494	$ 10,801	$ 29,184	$ 18,140
General and administrative	4,808	2,726	9,302	5,332
Total operating expenses	19,302	13,527	38,486	23,472
Loss from operations	(15,246)	(10,679)	(31,409)	(18,597)
Other income:
Interest and other income, net	149	5	156	11
Net loss	$ (15,097)	$ (10,674)	$ (31,253)	$ (18,586)
Net loss per share, basic	$ (0.63)	$ (7.69)	$ (1.30)	$ (14.25)
Net loss per share, diluted	$ (0.63)	$ (7.69)	$ (1.30)	$ (14.25)
Weighted average common shares outstanding-basic	24,063,677	1,387,973	24,019,406	1,303,899
Weighted average common shares outstanding-diluted	24,063,677	1,387,973	24,019,406	1,303,899