Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Cash flows from operating activities:
Net loss	$ (55,463)	$ (36,281)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation expense	3,662	4,429
Lease expense	(133)	(86)
Depreciation expense	175	167
Amortization of premium on marketable securities	(1,216)	(2,361)
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	4,818	(1,681)
Accounts payable	1,722	1,626
Accrued expenses	479	9,765
Other assets	35	23
Net cash used in operating activities:	(45,921)	(24,399)
Cash flows from investing activities:
Purchases of property and equipment	(68)	(274)
Purchases of marketable securities	(80,142)	(166,582)
Maturities of marketable securities	113,500	35,000
Net cash provided by (used in) investing activities	33,290	(131,856)
Cash flows from financing activities:
Proceeds from issuance of equity securities, net of issuance costs		161,806
Proceeds from exercise of stock options and warrants		11
Net cash provided by financing activities	0	161,817
Net increase in cash, cash equivalents and restricted cash	(12,631)	5,562
Cash, cash equivalents and restricted cash at beginning of period	33,824	28,088
Cash, cash equivalents and restricted cash at end of period	21,193	33,650
Supplemental disclosure of non-cash investing and financing activities:
Purchases of property and equipment included in accounts payable and accrued expenses	23	53
Offering costs included in accrued expense	$ 50	50
Leased assets obtained in exchange for new operating lease liabilities		$ 465