Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Cash flows from operating activities:
Net loss	$ (53,585)	$ (42,210)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	512	542
Amortization of intangible assets	666	665
Stock-based compensation	13,586	7,181
Loss on disposal of fixed assets	6	13
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	(403)	(65)
Other receivables	48	109
Right-of-use assets	923	806
Other long-term assets	(31)	0
Accounts payable	(201)	263
Accrued expenses	3,212	1,219
Lease liabilities	(1,076)	(896)
Accrued interest on related party note payable	0	(668)
Net cash used in operating activities	(36,343)	(33,041)
Cash flows from investing activities:
Purchases of property and equipment	(125)	(121)
Net cash used in investing activities	(125)	(121)
Cash flows from financing activities:
Proceeds from issuance of common stock under employee stock purchase plan	478	395
Proceeds from exercises of warrants	49,424	14,828
Proceeds from exercises of stock options	871	1,171
Proceeds from issuance of common stock and warrants in relation to rights offering, net of issuance costs	59,649	0
Issuance cost in relation to related party note extinguishment	0	(6)
Deferred issuance costs in relation to future at-the-market equity offering	(281)	0
Net cash provided by financing activities	110,141	16,388
Net increase (decrease) in cash and cash equivalents	73,673	(16,774)
Cash and cash equivalents at beginning of period	44,365	61,139
Cash and cash equivalents at end of period	118,038	44,365
Supplemental disclosure of noncash investing and financing activities:
Rights offering deemed pro-rata distribution to shareholders	47,700	0
Principal and accrued interest of related party note settled via issuance of common stock	0	(65,249)
Right-of-use asset obtained in exchange for lease liability	830	0
Other receivable from exercise of warrants	92	0
Equipment purchases included in accounts payable and accrued expenses	26	0
Rights offering and warrant issuance costs in accounts payable and accrued expenses	$ 13	$ 0