Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flows from operating activities:
Net loss	$ (40,790)	$ (12,558)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation and amortization	360	36
Net (accretion) and amortization of investments in marketable securities	(1,807)
Change in fair value of preferred stock tranche right liability	7,390	1,030
Non-cash lease expense	315
Stock-based compensation expense	3,845	1,668
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	(1,170)	(1,823)
Other assets	51	(149)
Accounts payable	(1,040)	(502)
Accrued expenses and other current liabilities	(795)	898
Operating lease liabilities	(326)
Net cash used in operating activities	(33,967)	(11,400)
Cash flows from investing activities
Purchases of short-term investments	(183,231)
Maturities of short-term investments	36,240
Purchases of property and equipment	(2,039)	(147)
Net cash used in investing activities	(149,030)	(147)
Cash flows from financing activities
Proceeds from initial public offering and concurrent private placement, net of underwriter discounts and commissions and deferred offering costs	159,099
Proceeds from issuance restricted common stock		54
Payment of deferred offering costs		(58)
Net cash provided by financing activities	223,012	59,916
Net increase in cash, cash equivalents, and restricted cash	40,015	48,369
Cash, cash equivalents, and restricted cash at beginning of period	70,254	31,159
Cash, cash equivalents, and restricted cash at end of period	110,269	79,528
Supplemental disclosure for noncash investing and financing activities:
Deferred offering costs included in accounts payable and accrued expenses at period end	1,394	108
Purchases of property and equipment included in accounts payable and accrued expenses at period end		88
Reconciliation of cash, cash equivalents and restricted cash
Cash and cash equivalents	110,164	79,528
Restricted cash	105
Total cash, cash equivalents and restricted cash shown in the statement of cash flows	110,269	79,528
Series A Convertible Preferred Stock
Cash flows from financing activities
Proceeds from issuance of convertible preferred stock, net of issuance costs paid		59,920
Supplemental disclosure for noncash investing and financing activities:
Conversion of convertible preferred stock into common stock upon closing of initial public offering	89,487
Series B Convertible Preferred Stock
Cash flows from financing activities
Proceeds from issuance of convertible preferred stock, net of issuance costs paid	63,913
Supplemental disclosure for noncash investing and financing activities:
Conversion of convertible preferred stock into common stock upon closing of initial public offering	145,252
Series A Preferred Stock
Supplemental disclosure for noncash investing and financing activities:
Settlement of preferred stock tranche right liability		$ 11,465
Series B Preferred Stock
Supplemental disclosure for noncash investing and financing activities:
Settlement of preferred stock tranche right liability	$ 11,590