Description of Business	9 Months Ended
Sep. 30, 2021
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Description of Business	(1) Description of Business MiNK Therapeutics, Inc. (MiNK or the Company) is a clinical stage biopharmaceutical company focused on developing allogeneic invariant natural killer T (iNKT) cell therapies to treat cancer and other life-threatening illnesses. The Company has incurred losses since inception and, as of September 30, 2021, had an accumulated deficit of $77.2 million. Since inception until the completion of the Company’s initial public offering (see Note 13 to the Unaudited Interim Condensed Consolidated Financial Statements), the Company financed its operations primarily through funding from Agenus Inc. (Agenus), its parent company. MiNK expects to continue incurring operating losses and negative cash flows for the foreseeable future. Based on the Company’s current plans and projections, MiNK believes its quarter end cash balance, plus the proceeds received from its initial public offering, will be sufficient to satisfy its liquidity requirements for more than one year from when these financial statements were issued. Management continually addresses the Company’s liquidity position and adjusts spending as needed in order to preserve liquidity. The Company’s future liquidity needs will be determined primarily by the success of its operations with respect to the progression of the Company’s product candidates and key development and regulatory events in the future. Potential sources of additional funding for the Company include: (1) pursuing collaboration, out-licensing and/or partnering opportunities for the Company’s portfolio programs and product candidates with one or more third parties, (2) securing additional debt financing and/or (3) selling equity securities. MiNK’s product candidates are in various stages of development and significant additional expenditures will be required if the Company starts new trials, encounters delays in its programs, applies for regulatory approvals, continues development of its technologies, expands its operations, and/or brings its product candidates to market. The eventual total cost of each clinical trial is dependent on a number of factors such as trial design, length of the trial, number of clinical sites, and number of patients. The process of obtaining and maintaining regulatory approvals for new therapeutic products is lengthy, expensive, and uncertain. Because all of the Company’s programs are at an early stage of clinical development, the Company is unable to reliably estimate the cost of completing its research and development programs or the timing for bringing such programs to various markets or substantial partnering or out-licensing arrangements, and, therefore, when, if ever, material cash inflows are likely to commence.

Description of Business

9 Months Ended

Sep. 30, 2021

Organization Consolidation And Presentation Of Financial Statements [Abstract]

(1) Description of Business

MiNK Therapeutics, Inc. (MiNK or the Company) is a clinical stage biopharmaceutical company focused on developing allogeneic invariant natural killer T (iNKT) cell therapies to treat cancer and other life-threatening illnesses.

The Company has incurred losses since inception and, as of September 30, 2021, had an accumulated deficit of $77.2 million. Since inception until the completion of the Company’s initial public offering (see Note 13 to the Unaudited Interim Condensed Consolidated Financial Statements), the Company financed its operations primarily through funding from Agenus Inc. (Agenus), its parent company. MiNK expects to continue incurring operating losses and negative cash flows for the foreseeable future. Based on the Company’s current plans and projections, MiNK believes its quarter end cash balance, plus the proceeds received from its initial public offering, will be sufficient to satisfy its liquidity requirements for more than one year from when these financial statements were issued.

Management continually addresses the Company’s liquidity position and adjusts spending as needed in order to preserve liquidity. The Company’s future liquidity needs will be determined primarily by the success of its operations with respect to the progression of the Company’s product candidates and key development and regulatory events in the future. Potential sources of additional funding for the Company include: (1) pursuing collaboration, out-licensing and/or partnering opportunities for the Company’s portfolio programs and product candidates with one or more third parties, (2) securing additional debt financing and/or (3) selling equity securities.

MiNK’s product candidates are in various stages of development and significant additional expenditures will be required if the Company starts new trials, encounters delays in its programs, applies for regulatory approvals, continues development of its technologies, expands its operations, and/or brings its product candidates to market. The eventual total cost of each clinical trial is dependent on a number of factors such as trial design, length of the trial, number of clinical sites, and number of patients. The process of obtaining and maintaining regulatory approvals for new therapeutic products is lengthy, expensive, and uncertain. Because all of the Company’s programs are at an early stage of clinical development, the Company is unable to reliably estimate the cost of completing its research and development programs or the timing for bringing such programs to various markets or substantial partnering or out-licensing arrangements, and, therefore, when, if ever, material cash inflows are likely to commence.