CONDENSED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 18,220	$ 21,351
Short-term investments	44,696	62,267
Prepaid expenses and other current assets	4,608	2,644
Total current assets	67,524	86,262
Long-term investments	8,301	5,021
Other assets, long-term	0	804
Total assets	75,825	92,087
Current liabilities:
Accounts payable	2,113	3,317
Accrued compensation	1,199	1,676
Accrued liabilities	2,954	4,454
Other current liabilities	717	791
Total liabilities	6,983	10,238
Commitments and contingencies (Note 7)
Stockholders' equity:
Preferred stock, $0.00001 par value; 10,000,000 shares authorized at June 30, 2025 and December 31, 2024; no shares issued and outstanding at June 30, 2025 and December 31, 2024
Common stock, $0.00001 par value; 500,000,000 shares authorized at June 30, 2025 and December 31, 2024; 27,376,461 and 29,919,634 shares issued and outstanding at June 30, 2025 and December 31, 2024, respectively
Additional paid-in capital	291,704	287,594
Accumulated other comprehensive gain	25	31
Accumulated deficit	(222,887)	(205,776)
Total stockholders' equity	68,842	81,849
Total liabilities and stockholders' equity	$ 75,825	$ 92,087

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).