CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flow from operating activities
Net loss	$ (6,367)	$ (4,255)
Adjustments to reconcile net loss to net cash used in operating activities
Stock-based compensation	430	329
Amortization of right of use assets	45	42
Depreciation	43	36
(Increase) decrease in operating assets
Prepaid drug product	(1,624)	(263)
Other current assets	451	(82)
Increase (decrease) in operating liabilities
Accounts payable and accrued expenses	343	14
Lease liabilities	(50)	(46)
Net cash used in operating activities	(6,729)	(4,225)
Cash flow from investing activities
Purchases of furniture, fixtures & equipment	(21)	(47)
Net cash used in investing activities	(21)	(47)
Cash flow from financing activities
Net proceeds from sale of common stock		14,453
Net proceeds from exercise of warrants		4,157
Net cash provided by financing activities		18,610
Net (decrease) increase in cash	(6,750)	14,338
Cash, beginning of period	23,774	13,755
Cash, end of period	17,024	$ 28,093
Non-cash operating activities
Right of use asset recognized in exchange for lease obligation	$ 85