Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Operating expenses:
Research and development	$ 37,125	$ 17,097	$ 65,872	$ 32,507
General and administrative	12,730	15,807	32,204	29,596
Total operating expenses	49,855	32,904	98,076	62,103
Operating loss	(49,855)	(32,904)	(98,076)	(62,103)
Other income, net	664	2,406	1,866	4,458
Net loss	(49,191)	(30,498)	(96,210)	(57,645)
Other comprehensive gain (loss):
Net unrealized loss on marketable securities	(11)	(2)	(64)	(43)
Foreign currency translation adjustment	18	10	20	(9)
Comprehensive loss	$ (49,184)	$ (30,490)	$ (96,254)	$ (57,697)
Net loss per share — basic (in USD per share)	$ (2.34)	$ (1.46)	$ (4.59)	$ (3.08)
Net loss per share — diluted (in USD per share)	$ (2.34)	$ (1.46)	$ (4.59)	$ (3.08)
Weighted-average common shares used to compute net loss per share - basic (in shares)	21,010	20,852	20,974	18,713
Weighted-average common shares used to compute net loss per share - diluted (in shares)	21,010	20,852	20,974	18,713