Consolidated Balance Sheets - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Current assets
Cash	$ 78,734,000	$ 15,662,000
Prepaid expenses and other current assets	4,727,000	1,832,000
Total current assets	83,461,000	17,494,000
Operating lease right-of-use asset	39,000
Total assets	83,500,000	17,494,000
Current liabilities
Accounts payable	1,693,000	1,887,000
Accrued expenses	3,728,000	1,924,000
Licenses payable	200,000	125,000
Convertible debt		2,431,000
Short-term portion of convertible notes payable, at fair value	1,030,000
Derivative liability	1,174,000
Warrant liabilities, at fair value	424,000	1,062,000
Operating lease liability	38,000
Total current liabilities	8,287,000	7,429,000
Licenses payable, long-term		200,000
Note payable		147,000
Convertible notes payable, at fair value	17,890,000
Convertible debt, long-term		7,146,000
Total liabilities	26,177,000	14,922,000
Commitments and contingencies (note 13)
Stockholders’ equity
Preferred stock, $0.001 par value, 10,000,000 shares authorized, no shares          issued or outstanding as of December 31, 2021 and December 31, 2020
Common stock, $0.001 par value, 240,000,000 and 120,000,000 shares authorized,          105,500,445 and 54,535,891 issued and outstanding as of          December 31, 2021 and December 31, 2020, respectively	105,000	54,000
Additional paid-in-capital	198,428,000	77,680,000
Accumulated deficit	(141,210,000)	(75,162,000)
Total stockholders’ equity	57,323,000	2,572,000
Total liabilities and stockholders’ equity	$ 83,500,000	$ 17,494,000