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Segment Reporting (Tables) | 12 Months Ended
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Dec. 31, 2024
Segment Reporting [Abstract] |
Schedule of Segment Reporting Information, by Segment | The following table presents selected financial information with respect to the Company’s single operating segment for the years ended December 31, 2024 and 2023 (in thousands):
|  | Year Ended December 31,
|  | 2024 |  | 2023
Revenue: |  |  |  |
Collaboration and license revenue |  | $ | 38,275 |  |  | $ | 26,004 |
Grant revenue |  | 638 |  |  | — |
Total revenue |  | 38,913 |  |  | 26,004 |
Less |  |  |  |
Operating expenses: |  |  |  |
Legacy Selecta programs |  | 6,150 |  |  | 31,826 |
Descartes-08 for MG |  | 12,142 |  |  | 343 |
Early stage programs |  | 1,028 |  |  | 595 |
Research and development employee expenses |  | 11,952 |  |  | 18,363 |
Research and development stock-based compensation expense |  | 3,217 |  |  | 12,985 |
Research and development facilities and other expenses |  | 10,616 |  |  | 7,148 |
General and administrative |  | 30,126 |  |  | 40,450 |
Impairment of long-lived assets |  | 7,579 |  |  | 710 |
Other expense, net (1) |  | 33,527 |  |  | 133,294 |
Net loss |  | $ | (77,424) |  |  | $ | (219,710) |
(1) Includes impairment of long-lived assets, interest income, foreign currency transaction, net, interest expense, change in fair value of warrant liabilities, change in fair value of contingent value right liability, change in fair value of forward contract liabilities, other income, net, and income tax (expense) benefit.

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-25 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 + Details
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