Prepaid Expenses and Other Current Assets and Accrued Expenses - Schedule of Accrued Expenses (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Payables and Accruals [Abstract]
Accrued CRO costs	$ 378	$ 1,324
Accrued research and development costs	325	449
Accrued compensation costs	1,090	1,680
Accrued professional and consulting costs	870	350
Accrued termination benefits	262	515
Other accrued costs	132	267
Total accrued expenses	$ 3,057	$ 4,585