Unaudited Condensed Consolidated Balance Sheets - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 52,752,000	$ 48,910,000
Short-term investments	0	27,517,000
Prepaid expenses and other current assets	2,285,000	2,313,000
Total current assets	55,037,000	78,740,000
Property and equipment, net		347,000
Operating lease right-of-use asset		902,000
Total assets	55,037,000	79,989,000
Current liabilities:
Accounts payable	691,000	368,000
Accrued liabilities	2,630,000	6,567,000
Current portion of operating lease liability		825,000
Current portion of long-term debt	1,208,000
Total current liabilities	4,529,000	7,760,000
Operating lease liability, net of current portion		181,000
Long-term debt, net of debt discount	12,580,000	13,303,000
Other long-term liabilities	863,000	1,390,000
Commitments and contingencies (Note 3)
Stockholders’ equity:
Preferred stock, $0.0001 par value; authorized shares – 10,000,000 as of September 30, 2022 and December 31, 2021; issued and outstanding shares – none as of September 30, 2022 and December 31, 2021
Common stock, $0.0001 par value; authorized shares – 200,000,000 as of September 30, 2022 and December 31, 2021; issued shares – 42,569,515 and 42,110,560 as of September 30, 2022 and December 31, 2021, respectively; outstanding shares – 42,569,515 and 42,108,428 as of September 30, 2022 and December 31, 2021, respectively	4,000	4,000
Additional paid-in-capital	244,677,000	240,309,000
Accumulated other comprehensive loss		(5,000)
Accumulated deficit	(207,616,000)	(182,953,000)
Total stockholders’ equity	37,065,000	57,355,000
Total liabilities and stockholders’ equity	$ 55,037,000	$ 79,989,000