Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss	$ (19,469)	$ (15,774)
Adjustments to reconcile net loss to net cash used in operating activities
Compensation cost for stock options granted	5,243	3,648
Depreciation and amortization	6	21
Disposal of assets	3	0
Changes in operating assets and liabilities:
Prepaid expenses	(2,619)	(69)
Research and development rebate receivable	462	(300)
Other assets	395	643
Accounts payable	(64)	(921)
Accrued expenses	(87)	(18)
Payroll liabilities	(113)	(51)
Other current liabilities	6	14
Net cash used in operating activities	(16,237)	(12,807)
CASH FLOWS FROM INVESTING ACTIVITY
Deposit on investment in equity securities	(2,700)	0
Purchase of furniture and equipment	(19)	(9)
Net cash used in investing activities	(2,719)	(9)
CASH FLOWS FROM FINANCING ACTIVITY
Proceeds from issuance of common stock and warrants, net of issuance costs	0	69,668
Proceeds from exercise of warrants	0	43,818
Proceeds from exercise of employee stock options	0	391
Payment of taxes related to net-exercise of employee stock options	0	(574)
Net cash provided by financing activities	0	113,303
Effect of exchange rate change on cash	(54)	0
NET (DECREASE) INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(19,010)	100,487
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, BEGINNING BALANCE	136,487	39,664
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, ENDING BALANCE	117,477	140,151
SUPPLEMENTAL DISCLOSURES
Cash and cash equivalents	117,367	140,041
Restricted cash	110	110
Total cash, cash equivalents and restricted cash shown in the condensed consolidated statements of cash flows	117,477	140,151
NONCASH INVESTING AND FINANCING ACTIVITIES
Reclassification of the warrant liability to equity upon adoption of accounting standard	0	13,003
Common stock issued upon cashless exercise of stock options	0	1,331
Conversion of Series B Convertible Preferred Stock into Common Stock [Member]
NONCASH INVESTING AND FINANCING ACTIVITIES
Conversion of Series B convertible preferred stock to common stock	$ 0	$ 37