STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Operating expenses:
Research and development	$ 5,937	$ 13,570	$ 11,518	$ 26,906
General and administrative	3,429	9,069	6,935	17,296
Gain on lease modification	(133)	0	(133)	0
Total operating expenses	9,233	22,639	18,320	44,202
Loss from operations	(9,233)	(22,639)	(18,320)	(44,202)
Other income (expense):
Interest Expense	(740)	0	(1,425)	0
Other income (expense), net	41	(31)	25	(22)
Net loss	(9,932)	(22,670)	(19,720)	(44,224)
Net loss applicable to common stockholders	$ (9,932)	$ (22,670)	$ (19,720)	$ (44,224)
Earnings per share, Basic	$ (0.05)	$ (0.11)	$ (0.09)	$ (0.21)
Earnings per share, Diluted	$ (0.05)	$ (0.11)	$ (0.09)	$ (0.21)
Weighted Average Number Of Shares Outstanding Basic	214,998,893	214,426,406	214,972,876	214,191,839
Weighted Average Number Of Diluted Shares Outstanding	214,998,893	214,426,406	214,972,876	214,191,839