Unaudited Condensed Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Operating Activities
Net loss	$ (35,836)	$ (20,284)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	11	8
Amortization of loan fees		7
Final payment amortization		709
Success fee amortization		13
Stock-based compensation expense	3,763	356
Accretion of discount on short-term investments	(4,665)	(257)
Non-cash lease expense	(13)	17
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	(4,444)	(307)
Accounts receivable - other	(90)
Other assets	(34)
Accounts payable	1,249	40
Accrued expenses and other current liabilities	(2,073)	926
Net cash used in operating activities	(42,132)	(18,772)
Investing Activities
Proceeds from sales and maturities of short-term investments	315,991	135,711
Purchases of short-term investments	(659,639)	(111,047)
Purchases of property and equipment	(26)	(6)
Net cash (used in) provided by investing activities	(343,674)	24,658
Financing Activities
Proceeds from initial public offering, net of issuance costs	406,410
Payments of success fee or long-term debt	(365)	(16,223)
Proceeds from exercise of common stock options	77	233
Deferred offering costs	(3,424)
Net cash provided by (used in) financing activities	402,698	(15,990)
Net increase (decrease) in cash, cash equivalents and restricted cash	16,892	(10,104)
Cash, cash equivalents and restricted cash at beginning of period	8,266	88,143
Cash, cash equivalents and restricted cash at end of period	25,158	78,039
Supplemental Disclosure of Cash Flow Information
Cash paid for interest		$ 376
Supplemental Schedule of Non-cash Investing and Financing Activities:
Reclassification of 38,413,909 redeemable convertible preferred stock to 38,413,909 shares of common stock	307,890
Reclassification of deferred offering costs	$ 6,845