Unaudited Condensed Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Income Statement [Abstract]
Collaboration and other revenue	$ 0	$ 11,000	$ 0	$ 11,000
Operating expenses:
Research and development expense (includes related party amounts of $0 for the three and nine months ended September 30, 2025 and $1,775 and $2,025 for the three and nine months ended September 30, 2024, respectively)	9,539	16,395	35,578	51,445
General and administrative expense	4,250	5,875	14,472	17,254
Total operating expenses	13,789	22,270	50,050	68,699
Loss from operations	(13,789)	(11,270)	(50,050)	(57,699)
Other income (loss):
Interest income	133	692	770	2,815
Loss on warrant liability	(2,119)	0	(536)	0
Other expense	(3)	(8)	(7)	(8)
Total other income (loss)	(1,989)	684	227	2,807
Net loss and comprehensive loss	$ (15,778)	$ (10,586)	$ (49,823)	$ (54,892)
Net loss per common share, basic	$ (0.27)	$ (0.22)	$ (0.85)	$ (1.14)
Net loss per common share, diluted	$ (0.27)	$ (0.22)	$ (0.85)	$ (1.14)
Weighted-average shares of common stock outstanding, basic	58,745,343	48,335,847	58,501,472	48,213,183
Weighted-average shares of common stock outstanding, diluted	58,745,343	48,335,847	58,501,472	48,213,183