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Balance Sheet Details (Accounts payable and accrued liabilities) (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
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Balance Sheet Details |  |
Accounts payable | $ 1,280 | $ 766
Accrued clinical trial expenses | 137 | 828
Other accrued expenses | 582 | 461
Accounts Payable and Accrued Liabilities, Current, Total | $ 1,999 | $ 2,055

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