Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (48,959)	$ (23,739)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	661	697
Share-based compensation	5,581	556
Change in fair value of warrant liability	1,318	144
Net accretion and amortization in marketable securities	353
Amortization of debt issuance costs	107
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	(2,077)	102
Accounts payable	(772)	1,411
Accrued expenses and other liabilities	5,637	988
Deferred revenue	(1,125)	(863)
Deferred rent	(21)	18
Other assets	5	7
Net cash used in operating activities	(39,292)	(20,679)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment	(718)	(148)
Purchase of marketable securities	(218,471)	(3,649)
Proceeds from maturity of marketable securities	14,565	17,400
Proceeds from sale of marketable securities		4,400
Net cash (used in) provided by investing activities	(204,624)	18,003
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of common stock upon initial public offering, net of underwriting discounts and commissions, and offering costs	214,707
Proceeds from issuance of convertible preferred units, net of issuance costs	83,275	54,348
Proceeds from debt financing, net of debt issuance costs	2,416
Payments for tax distributions	(45)	(331)
Payments on capital lease obligations	(99)	(122)
Net cash provided by financing activities	300,254	53,895
Net increase in cash, cash equivalents and restricted cash	56,338	51,219
Cash, cash equivalents and restricted cash at beginning of period	59,836	8,617
Cash, cash equivalents and restricted cash at end of period	116,174	59,836
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Interest paid on term loan	(81)
NON-CASH INVESTING AND FINANCING ACTIVITIES:
Property and equipment additions included in accounts payable and accrued liabilities	209	278
Issuance costs for convertible preferred units included in accounts payable and accrued liabilities	$ 192	$ 2,666