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Transactions with BioXcel LLC (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2017 | Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Transactions with BioXcel |  |  |  |  |  |
Research and development |  | $ 5,101 | $ 19,619 | $ 24,534 | $ 74,392 |
Selling, general and administrative |  | 7,683 | 24,344 | 30,398 | 73,810 |
Total operating expenses |  | 15,507 | 48,638 | 58,652 | 152,911 |
BioXcel LLC |  |  |  |  |  |
Transactions with BioXcel |  |  |  |  |  |
Monthly agreement option fees | $ 18 |  |  |  |  |
Maximum milestone (as as percent) | 3.00% |  |  |  |  |
BioXcel LLC | Development milestones |  |  |  |  |  |
Transactions with BioXcel |  |  |  |  |  |
Potential milestone payments | $ 10,000 |  |  |  |  |
BioXcel LLC | Sales milestones |  |  |  |  |  |
Transactions with BioXcel |  |  |  |  |  |
Potential milestone payments | $ 30,000 |  |  |  |  |
Related Party |  |  |  |  |  |
Transactions with BioXcel |  |  |  |  |  |
Other current liabilities |  | 107 |  | 107 |  | $ 107
Related Party | BioXcel LLC |  |  |  |  |  |
Transactions with BioXcel |  |  |  |  |  |
Research and development |  | 230 | 321 | 708 | 950 |
Selling, general and administrative |  | 120 | 103 | 258 | 189 |
Total operating expenses |  | 350 | $ 424 | 966 | $ 1,139 |
Other current liabilities |  | $ 0 |  | $ 0 |  |

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