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Segment Reporting (Details) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2025 USD ($)	Jun. 30, 2025 USD ($)	Mar. 31, 2025 USD ($)	Sep. 30, 2024 USD ($)	Jun. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	Sep. 30, 2025 USD ($) entity	Sep. 30, 2024 USD ($)	Dec. 31, 2024 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | entity							1
Segment Reporting Information [Line Items]
Research and development	$ 5,039			$ 7,208			$ 19,823	$ 22,947
Employee related general and administrative expenses	3,006			3,136			9,049	8,563
Net loss	(10,083)	$ (10,561)	$ (11,209)	(18,838)	$ (7,229)	$ (11,827)	(31,853)	(37,894)
Total segment assets	28,284						28,284		$ 28,178
Reportable Segment
Segment Reporting Information [Line Items]
Contract and grant reimbursements	0			(544)			(754)	(888)
Employee related general and administrative expenses	1,333			846			3,782	2,724
Professional fees and other general and administrative expenses	1,670			2,289			5,259	5,837
Other segment items	2,039			8,496			2,984	6,387
Net loss	10,083			18,838			31,853	37,894
Total segment assets	28,284						28,284		$ 28,178
Clinical trial expenses | Reportable Segment
Segment Reporting Information [Line Items]
Research and development	1,054			3,757			8,491	9,304
Employee related research and development expenses | Reportable Segment
Segment Reporting Information [Line Items]
Research and development	2,073			1,995			6,696	6,147
Chemistry, manufacturing and controls expenses | Reportable Segment
Segment Reporting Information [Line Items]
Research and development	456			476			1,486	3,534
Other research and development expenses | Reportable Segment
Segment Reporting Information [Line Items]
Research and development	$ 1,458			$ 1,523			$ 3,909	$ 4,849

X

- Definition

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