Condensed Consolidated Statements of Cash Flows - USD ($)	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Operating activities:
Net loss	$ (17,659,000)	$ (12,413,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation expense	220,000	165,000
Stock-based compensation expense	695,000	531,000
Non-cash lease expense	613,000	274,000
Non-cash interest and other expense, net	232,000	286,000
Changes in operating assets and liabilities:
Prepaid expenses and other assets	447,000	987,000
Accounts payable	438,000	5,445,000
Accrued expenses and other liabilities	323,000	(1,197,000)
Interest payable	9,000	89,000
Operating lease liabilities	(839,000)	(350,000)
Cash used in operating activities	(15,521,000)	(6,183,000)
Investing activities:
Purchase of property and equipment	(98,000)	(84,000)
Cash used in investing activities	(98,000)	(84,000)
Financing activities:
Proceeds from the issuance of common stock, net of issuance costs	8,498,000	30,010,000
Proceeds from issuance of pre-funded warrants, net of issuance costs	7,281,000	0
Borrowings on loan payable	0	15,000,000
Payment of loan issuance costs	0	(93,000)
Cash acquired in connection with reverse recapitalization	0	17,045,000
Payment of reverse recapitalization transaction costs	0	(6,074,000)
Proceeds from option exercises	0	17,000
Cash provided by financing activities	15,779,000	55,905,000
Net increase in cash and cash equivalents	160,000	49,638,000
Cash, cash equivalents and restricted cash at beginning of period	51,829,000	18,820,000
Cash, cash equivalents and restricted cash at end of period	51,989,000	68,458,000
Supplemental disclosure of cash flow information:
Cash paid for interest	556,000	383,000
Non-cash operating activities:
Lease modification	884,000	0
Non-cash investing activities:
Property and equipment in accounts payable	4,000	0
Non-cash financing activities:
Vesting of early exercise stock options	$ 0	$ 95,000