Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (26,148,000)	$ (5,721,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	577,000	93,000
Accrued interest on marketable securities	0	415,000
Stock-based compensation expense	1,575,000	1,335,000
Net realized gain (loss) on sale of marketable securities	0	2,000
Amortization of premium (discount) on marketable securities	549,000	245,000
Non-cash loss on termination of lease	137,000	0
Gain on sale of equipment	(23,000)	0
Gain from foreign exchange	0	13,000
Changes in operating assets and liabilities:
Prepaid expenses and other assets	(1,007,000)	(1,260,000)
Accounts payable	(8,255,000)	2,067,000
Other liabilities	(1,904,000)	(349,000)
Net cash used in operating activities	(34,499,000)	(3,160,000)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(7,000)	(213,000)
Proceeds from sale of property and equipment	35,000	0
Purchases of available-for-sale marketable securities	(3,672,000)	(85,409,000)
Proceeds from sales and maturities of marketable securities	49,021,000	14,289,000
Net cash provided by (used in) investing activities	45,377,000	(71,333,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from initial public offering, net of issuance costs	0	90,506,000
Proceeds from exercise of stock options	0	258,000
Net cash provided by financing activities	0	90,764,000
Net change in cash and cash equivalents	10,878,000	16,271,000
Cash and cash equivalents at beginning of period	8,305,000	2,416,000
Effect of exchange rates on cash	58,000	0
Cash and cash equivalents at end of period	19,241,000	18,687,000
Supplemental non-cash disclosure: NONCASH INVESTING AND FINANCING ACTIVITY:
Non-cash gain on sale of fixed assets	14,000	0
Reclassification of par to additional paid-in-capital	0	2,000
Conversion of Series A and B convertible preferred stock to common stock	0	72,925,000
Operating right-of-use asset obtained in exchange for operating lease liability	824,000	0
Derecognition of operating right-of-use asset and operating lease liability upon termination of lease	714,000	0
Unrealized gain (loss) on available-for-sale securities	$ (167,000)	$ (152,000)