Condensed Consolidated Balance Sheets (Unaudited) - USD ($)	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 4,980,000	$ 10,495,000
Prepaid expenses and other current assets	2,435,000	1,879,000
Total current assets	7,415,000	12,374,000
Restricted cash	26,000	26,000
Right-of-use asset	363,000	109,000
Property and equipment, net	2,000	3,000
Total assets	7,806,000	12,512,000
Current liabilities:
Accounts payable	1,041,000	1,323,000
Accrued liabilities	1,034,000	463,000
Accrued compensation and benefits	76,000	511,000
Current portion of lease liability	98,000	112,000
Current portion of debt	611,000	87,000
Total current liabilities	2,860,000	2,496,000
Warrant liability	469,000	2,651,000
Lease liability, net of current portion	266,000	0
Total liabilities	3,595,000	5,147,000
Commitments and contingencies (Note 9)
Stockholders' equity:
Common stock, $0.01 par value; 300,000,000 shares authorized as of June 30, 2022 and December 31, 2021, 21,880,169 and 14,239,177 shares issued and outstanding at June 30, 2022 and December 31, 2021, respectively	220,000	143,000
Additional paid-in capital	105,180,000	101,862,000
Accumulated deficit	(101,191,000)	(94,642,000)
Total stockholders' equity	4,211,000	7,365,000
Total liabilities and stockholders' equity	7,806,000	12,512,000
Series A Preferred Stock [Member]
Stockholders' equity:
Series A convertible Preferred Stock, 7,000,000 shares authorized, $0.01 par value; 200,000 issued and outstanding at June 30, 2022 and December 31, 2021	$ 2,000	$ 2,000