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	$ (19,209)	$ (23,679)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	101	126
Non-cash lease expense	620	687
Stock-based compensation expense	2,299	3,263
Non-cash activity related to the sale of future royalties	3	(86)
Amortization of premiums and discounts on investments	0	(450)
Changes in operating assets and liabilities:
Accounts receivable	597	248
Prepaid expenses and other assets	854	(783)
Accounts payable and accrued liabilities	119	(3,074)
Operating lease liability	(645)	(619)
Total adjustments	3,948	(688)
Net cash used in operating activities	(15,261)	(24,367)
Cash flows from investing activities:
Purchase of investments	0	(18,098)
Sales and maturities of investments	0	29,650
Net cash provided by investing activities	0	11,552
Cash flows from financing activities:
Proceeds from issuance of common stock, pre-funded warrants, and common warrants, net of issuance costs	9,422	291
Payment of liability of future royalties, net of imputed interest	(4,020)	(4,161)
Net cash provided by (used in) financing activities	5,402	(3,870)
Net decrease in cash and cash equivalents and restricted cash	(9,859)	(16,685)
Cash and cash equivalents and restricted cash, beginning of period	20,541	27,225
Cash and cash equivalents and restricted cash, end of period	10,682	10,540
Supplemental cash flow data:
Issuance costs in accrued expenses and accounts payable	808	52
Cash paid for interest	802	0
Increase in right-of-use assets and operating lease liabilities	0	1,383
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	10,138	9,996
Restricted cash, long-term	544	544
Total cash, cash equivalents and restricted cash shown in the statement of cash flows	$ 10,682	$ 10,540