Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating expenses:
Research and development	$ 122,230	$ 80,796	$ 70,330
General and administrative	28,974	21,453	19,413
Total operating expenses	151,204	102,249	89,743
Loss from operations	(151,204)	(102,249)	(89,743)
Interest expense	(4,794)	(1,922)	(674)
Interest income and other, net	17,676	2,164	148
Net loss before income tax	(138,322)	(102,007)	(90,269)
Income tax (expense) benefit	(3,867)	(19)	147
Net loss	(142,189)	(102,026)	(90,122)
Other comprehensive income (loss):
Unrealized gain (loss) on marketable securities	547	(299)	(71)
Foreign currency translation adjustments	(7)	13	17
Total other comprehensive income (loss)	540	(286)	(54)
Comprehensive loss	$ (141,649)	$ (102,312)	$ (90,176)
Net loss per share, basic	$ (2)	$ (2.93)	$ (4.48)
Net loss per share, diluted	$ (2)	$ (2.93)	$ (4.48)
Weighted-average shares used to compute net loss per share, basic	71,172,870	34,806,349	20,098,340
Weighted-average shares used to compute net loss per share, diluted	71,172,870	34,806,349	20,098,340