Condensed Consolidated Statement of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net loss	$ (22,321)	$ (35,495)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation expense	0	127
Stock-based compensation expense	4,332	4,455
Non-cash interest expense	49	225
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	(1,219)	(3,272)
Deferred offering costs	0	1,341
Other assets	33	(559)
Accounts payable	(1,333)	42
Accrued expenses and other current liabilities	(5,377)	(110)
Net cash used in operating activities	(25,836)	(30,935)
Cash flows from financing activities:
Proceeds from Business Combination, net	0	195,882
Proceeds from exercise of stock options	34	110
Proceeds from sale of stock under employee stock purchase plan	11	0
Principal payments on term loan	(2,500)	(2,083)
Net cash provided by financing activities	(2,455)	193,909
Increase (decrease) in cash, cash equivalents and restricted cash	(28,291)	162,974
Cash, cash equivalents and restricted cash at beginning of period	136,950	4,826
Cash, cash equivalents and restricted cash at end of period	108,659	167,800
Supplemental disclosure
Cash paid for interest	83	144
Noncash financing activities
Proceeds from exercise of stock options included in other current assets	(9)	0
Conversion of convertible notes to Series B preferred stock	0	14,515
Exercise of warrants	0	76
Property and equipment purchases included in accounts payable and accrued expenses	$ 0	$ 61