Balance Sheet Components - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Organization, Consolidation and Presentation of Financial Statements [Abstract] | ||
| Accrued compensation and benefits | $ 1,275 | $ 2,517 |
| Accrued operational expenses | 320 | 43 |
| Accrued restructuring costs | 155 | 155 |
| Accrued research, development and clinical trial expenses | 367 | 977 |
| Operating lease liabilities, current | $ 393 | $ 372 |
| Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] | Total accrued expenses and other current liabilities | Total accrued expenses and other current liabilities |
| Total accrued expenses and other current liabilities | $ 2,510 | $ 4,064 |