CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
License revenue		$ 375
Operating expenses:
Research and development	$ 7,784	6,807
General and administrative	2,848	2,740
Total operating expenses	10,632	9,547
Loss from operations	(10,632)	(9,172)
Interest income	5	2
Interest expense	(21)	(14)
Australian research and development incentives	37	71
Foreign currency gain (loss)	235	(21)
Net loss	(10,376)	(9,134)
Net loss attributable to common stockholders	$ (10,376)	$ (9,134)
Net loss per share
Basic (in dollars per share)	$ (0.09)	$ (0.12)
Diluted (in dollars per share)	$ (0.09)	$ (0.12)
Weighted average common shares outstanding
Basic (in shares)	113,248,937	76,378,569
Diluted (in shares)	113,248,937	76,378,569