Segment Reporting (Details) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2025 USD ($)	Mar. 31, 2025 USD ($)	Jun. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	Jun. 30, 2025 USD ($) segment	Jun. 30, 2024 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | segment					1
Revenue	$ 1,497		$ 0		$ 2,355	$ 0
Less: Significant segment expenses
Net loss attributable to common stockholders	(12,587)	$ (12,433)	(12,576)	$ (12,452)	(25,020)	(25,028)
R&D
Segment Reporting Information [Line Items]
Revenue	1,497		0		2,355	0
Less: Significant segment expenses
Personnel-related expenses	5,593		4,874		10,779	9,554
Clinical and preclinical expenses	4,710		4,320		9,189	8,694
Facilities-related and overhead	2,022		1,809		3,998	3,718
Professional and consulting fees	1,584		1,294		3,186	2,815
Corporate expenses	456		255		1,037	496
Travel and entertainment	160		110		294	260
Plus: Other segment income	441		86		1,108	509
Net loss attributable to common stockholders	$ (12,587)		$ (12,576)		$ (25,020)	$ (25,028)