Condensed Consolidated Statement of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net loss	$ (15,231)	$ (19,048)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation expense	0	65
Stock-based compensation expense	1,976	1,593
Non-cash interest expense	36	188
Loss on conversion of convertible notes	0	711
Accretion of discount on convertible notes	0	1,600
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	(1,430)	(3,057)
Deferred offering costs	0	1,341
Other assets	20	(225)
Accounts payable	2,159	2,173
Accrued expenses and other current liabilities	(3,868)	(348)
Net cash used in operating activities	(16,338)	(15,007)
Cash flows from financing activities:
Proceeds from Business Combination, net		196,319
Proceeds from exercise of stock options	25	4
Principal payments on term loan	(1,250)	(833)
Net cash provided by financing activities	(1,225)	195,490
Increase (decrease) in cash, cash equivalents and restricted cash	(17,563)	180,483
Cash, cash equivalents and restricted cash at beginning of period	136,950	4,826
Cash, cash equivalents and restricted cash at end of period	119,387	185,309
Supplemental disclosure
Cash paid for interest	47	60
Noncash financing activities
Conversion of convertible notes to Series B preferred stock	$ 0	14,515
Exercise of warrants		76
Unpaid issuance costs in accounts payable and accrued expenses and other current liabilities		$ 437