Condensed Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash flows from operating activities:
Net loss	$ (61,311)	$ (39,389)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation expense	7,934	2,394
Depreciation	4	4
Accretion of premiums on investments, net	(7,332)	(575)
Changes in operating assets and liabilities:
Prepaid expenses and other assets	(2,985)	(185)
Accounts payable	131	(946)
Accrued research and development expenses	6,340	(516)
Accrued compensation and related expenses	789	(620)
Accrued other expenses	1,527	(5)
Operating right-of-use assets and lease liabilities, net	0	(2)
Net cash used in operating activities	(54,903)	(39,840)
Cash flows from investing activities:
Purchases of short-term investments	(415,959)	(53,056)
Maturities of short-term investments	197,400	78,850
Net cash provided by (used in) investing activities	(218,559)	25,794
Cash flows from financing activities:
Proceeds from issuance of common stock	301,350	28,960
Payments for offering costs	(15,029)	(2,001)
Proceeds from exercise of stock options	664	222
Net cash provided by financing activities	286,985	27,181
Net increase in cash, cash equivalents and restricted cash	13,523	13,135
Cash, cash equivalents and restricted cash at the beginning of the period	14,331	10,775
Cash, cash equivalents and restricted cash at the end of the period	$ 27,854	$ 23,910