Subsequent Event	3 Months Ended
Mar. 31, 2021
Subsequent Events [Abstract]
Subsequent Event	16. Subsequent Event On May 4, 2021, the Company entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Kuur Therapeutics, Inc., a Delaware corporation (“Kuur”). Kuur is a leading developer of off-the-shelf CAR-NKT cell immunotherapies for the treatment of solid and hematological malignancies. Pursuant to the terms of the Merger Agreement, the Company will pay $70.0 million upfront to Kuur shareholders and its former employees and directors, comprised primarily of equity in the Company’s common stock. Additionally, Kuur shareholders and its former employees and directors are eligible to receive up to $115.0 million of milestone payments, which may be paid, at the Company’s sole discretion, in either cash or additional common stock of the Company (or a combination of both). The Company believes the acquisition strategically combines its TCR program with the groundbreaking NKT cell platform to provide a solution that may address some of the known limitations associated with the first generation of cell therapy treatments focused on autologous CAR-T. Due to the recency of the Merger Agreement, the Company has not yet completed its assessment of the fair value of the assets acquired, the liabilities assumed and the contingent considerations. The Company will account for this in accordance with ASC 805, Business Combinations, and its evaluation the effect on its consolidated financial statements during the second quarter of 2021.

Subsequent Event

3 Months Ended

Mar. 31, 2021

16. Subsequent Event

On May 4, 2021, the Company entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Kuur Therapeutics, Inc., a Delaware corporation (“Kuur”). Kuur is a leading developer of off-the-shelf CAR-NKT cell immunotherapies for the treatment of solid and hematological malignancies. Pursuant to the terms of the Merger Agreement, the Company will pay $70.0 million upfront to Kuur shareholders and its former employees and directors, comprised primarily of equity in the Company’s common stock. Additionally, Kuur shareholders and its former employees and directors are eligible to receive up to $115.0 million of milestone payments, which may be paid, at the Company’s sole discretion, in either cash or additional common stock of the Company (or a combination of both). The Company believes the acquisition strategically combines its TCR program with the groundbreaking NKT cell platform to provide a solution that may address some of the known limitations associated with the first generation of cell therapy treatments focused on autologous CAR-T. Due to the recency of the Merger Agreement, the Company has not yet completed its assessment of the fair value of the assets acquired, the liabilities assumed and the contingent considerations. The Company will account for this in accordance with ASC 805, Business Combinations, and its evaluation the effect on its consolidated financial statements during the second quarter of 2021.