CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Cash flow from operating activities
Net income loss	$ 13,868	$ 10,440
Adjustments to reconcile net loss to net cash used in operating activities
Stock-based compensation	851	821
Amortization of right of use assets	90	85
Depreciation	88	76
(Increase) decrease in operating assets
Prepaid drug product	(3,064)	750
Other current assets	199	(915)
Increase (decrease) in operating liabilities
Accounts payable and accrued expenses	700	(199)
Lease liabilities	(99)	(95)
Net cash used in operating activities	(15,103)	(9,917)
Cash flow from investing activities
Purchases of furniture, fixtures & equipment	(21)	(70)
Net cash used in investing activities	(21)	(70)
Cash flow from financing activities
Net proceeds from sale of common stock	1,734	15,849
Net proceeds from exercise of warrants		4,157
Net cash provided by financing activities	1,734	20,006
Net (decrease) increase in cash	(13,390)	10,019
Cash, beginning of period	23,774	13,755
Cash, end of period	10,384	$ 23,774
Non-cash operating activities
Right of use asset recognized in exchange for lease obligation	$ 85