CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flow from operating activities
Net income loss	$ 5,273	$ 3,359
Adjustments to reconcile net loss to net cash used in operating activities
Stock-based compensation	206	217
Amortization of right of use assets	23	23
Depreciation	22	22
(Increase) decrease in operating assets
Prepaid drug product	1,191	(429)
Other current assets	(20)	433
Increase (decrease) in operating liabilities
Accounts payable and accrued expenses	224	591
Lease liabilities	(26)	(24)
Net cash used in operating activities	(3,653)	(2,526)
Cash flow from financing activities
Net (decrease) increase in cash	(3,653)	(2,526)
Cash, beginning of period	10,384	23,774
Cash, end of period	$ 6,731	21,248
Non-cash operating activities
Right of use asset recognized in exchange for lease obligation		$ 85