Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current assets
Cash	$ 30,511	$ 78,734
Prepaid expenses and other current assets	9,997	4,727
Total current assets	40,508	83,461
Operating lease right-of-use asset		39
Total assets	40,508	83,500
Current liabilities
Accounts payable	5,952	1,693
Accrued expenses	4,048	3,728
Licenses payable	1,000	200
Short-term portion of convertible notes payable, at fair value	10,655	1,030
Derivative liability		1,174
Warrant liabilities, at fair value	232	424
Operating lease liability		38
Total current liabilities	21,887	8,287
Convertible notes payable, at fair value	10,742	17,890
Total liabilities	32,629	26,177
Commitments and contingencies (note 12)
Stockholders’ equity
Common stock, $0.001 par value, 240,000,000 shares authorized,          107,168,256 and 105,500,445 issued and outstanding as of          September 30, 2022 and December 31, 2021, respectively	107	105
Additional paid-in-capital	203,859	198,428
Accumulated deficit	(196,087)	(141,210)
Total stockholders’ equity	7,879	57,323
Total liabilities and stockholders’ equity	$ 40,508	$ 83,500