CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Cash flow from operating activities
Net loss	$ (10,440)	$ (10,882)
Adjustments to reconcile net loss to net cash used in operating activities
Stock-based compensation	821	577
Amortization of right of use assets	85	79
Depreciation	76	72
(Increase) decrease in operating assets
Prepaid drug product	750	(497)
Other current assets	(915)	(140)
Increase (decrease) in operating liabilities
Accounts payable and accrued expenses	(199)	(84)
Lease liabilities	(95)	(85)
Net cash used in operating activities	(9,917)	(10,960)
Cash flow from investing activities
Purchases of furniture, fixtures & equipment	(70)
Net cash used in investing activities	(70)
Cash flow from financing activities
Net proceeds from sale of common stock	15,849	4,289
Net proceeds from exercise of warrants	4,157
Net cash provided by financing activities	20,006	4,289
Net increase (decrease) in cash	10,019	(6,671)
Cash, beginning of period	13,755	20,426
Cash, end of period	$ 23,774	$ 13,755