CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flows from operating activities:
Net loss	$ (42,688)	$ (31,445)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	157	141
Stock-based compensation	9,659	6,457
Non-cash lease expense	159	0
Amortization of premiums and discounts on marketable securities, net	(1,264)	(831)
Change in fair value of contingent value right liability	(800)	0
Changes in operating assets and liabilities:
Prepaid expenses, other current and long-term assets	(6,087)	(5,762)
Operating lease liabilities	(166)	(2)
Accounts payable	551	304
Accrued expenses and other liabilities	(3,317)	(1,755)
Net cash used in operating activities	(43,796)	(32,893)
Cash flows from investing activities:
Maturities of marketable securities	116,079	0
Purchases of marketable securities	(177,607)	(151,430)
Receipt of contingent value right milestone payment	10,000	0
Purchases of property and equipment	(22)	(119)
Net cash used in investing activities	(51,550)	(151,549)
Cash flows from financing activities:
Proceeds from exercise of stock options	2,061	281
Proceeds from issuance of common stock under ESPP	320	0
Proceeds from issuance of common stock and Pre-Funded Warrants in the Private Placement, net of issuance costs	89,695	0
Payment of deferred offering costs related to the Sales Agreement	0	(110)
Proceeds from the Financing Transaction, net of issuance costs	0	161,365
Cash acquired in connection with the reverse recapitalization	0	81,821
Payment of reverse recapitalization transaction costs	0	(8,736)
Net cash provided by financing activities	92,076	234,621
Net (decrease) increase in cash, cash equivalents and restricted cash	(3,270)	50,179
Cash, cash equivalents and restricted cash at the beginning of the period	100,195	75,590
Cash, cash equivalents and restricted cash at the end of the period	96,925	125,769
Components of cash, cash equivalents and restricted cash:
Cash and cash equivalents	96,871	125,715
Restricted cash	54	54
Total cash, cash equivalents and restricted cash	96,925	125,769
Supplemental disclosure of non-cash investing and financing activities:
Conversion of convertible preferred stock to common stock	0	149,749
Deferred offering costs related to the Sales Agreement included in accounts payable and accrued expenses and other current liabilities	0	414
Purchases of property and equipment included in accrued expenses and other current liabilities	23	0
Receivables from stock option exercises included in prepaid expenses and other current assets	$ 118	$ 0