CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues
Collaboration revenue	$ 0	$ 43	$ 0
Total revenues	0	43	0
Operating expenses
Research and development	35,108	6,354	8,086
In-process research and development	0	7,000	0
General and administrative	22,920	7,974	6,077
Total operating expenses	58,028	21,328	14,163
Loss from operations	(58,028)	(21,285)	(14,163)
Other income (expense)
Change in fair value of derivative liabilities	0	0	(3,187)
Loss on debt conversion	0	0	(341)
Interest expense	(79)	(721)	(1,768)
Other income (expense)	(310)	184	(784)
Total other income (expense)	(389)	(537)	(6,080)
Loss before income taxes	(58,417)	(21,822)	(20,243)
Income tax benefit	(52)	0	0
Net loss	(58,365)	(21,822)	(20,243)
Net comprehensive income	(58,365)	(21,822)	(20,243)
Deemed dividend related to Warrant Exchange	0	(12,546)	0
Net loss to common stockholders	$ (58,365)	$ (34,368)	$ (20,243)
Shares used in calculation net loss per common share - basic (in shares)	195,013,043	112,236,110	13,893,819
Shares used in calculation net loss per common share - diluted (in shares)	195,013,043	112,236,110	13,893,819
Net loss per common share - basic (in USD per share)	$ (0.30)	$ (0.31)	$ (1.46)
Net loss per common share - diluted (in USD per share)	$ (0.30)	$ (0.31)	$ (1.46)