CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
License revenue	$ 375	$ 375	$ 1,125	$ 1,125
Operating expenses:
Research and development	10,077	5,369	24,090	15,322
General and administrative	2,438	2,514	7,973	7,188
Total operating expenses	12,515	7,883	32,063	22,510
Loss from operations	(12,140)	(7,508)	(30,938)	(21,385)
Interest income	1	3	4	91
Interest expense	(9)	(17)	(39)	(42)
Australian research and development incentives	1,269	228	1,584	343
Foreign currency gain (loss)	(260)	237	(410)	189
Loss before income taxes	(11,139)	(7,057)	(29,799)	(20,804)
Dividend attributable to down round feature of warrants				(303)
Dividends attributable to Series A & B convertible preferred stock				(372)
Series A & B convertible preferred stock - beneficial conversion feature				(9,399)
Net loss attributable to common stockholders	$ (11,139)	$ (7,057)	$ (29,799)	$ (30,878)
Net loss per share
Basic & diluted	$ (0.14)	$ (0.09)	$ (0.39)	$ (0.58)
Weighted average common shares outstanding
Basic & diluted	78,218,774	76,321,644	76,631,172	53,548,902