Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities
Net loss	$ (50,066)	$ (16,599)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	621	416
Noncash operating lease expense	735	492
Stock-based compensation	6,630	2,146
Other, net	15	118
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	(12,646)	(395)
Other long-term assets	8	13
Accounts payable	(2,356)	2,749
Accrued expenses and other liabilities	4,260	(78)
Operating lease liabilities	(875)	(454)
Deferred revenue	(7,529)	(9,539)
Net cash used in operating activities	(61,203)	(21,131)
Cash flows from investing activities
Purchase of property and equipment	(3,372)	(367)
Sales and maturities of marketable securities	97,640	100,471
Purchases of marketable securities	(70,492)	(86,117)
Net cash provided by investing activities	23,776	13,987
Cash flows from financing activities
Proceeds from issuance of preferred stock, net of issuance costs		29,990
Proceeds from issuance of common stock upon exercise of stock options and purchase of shares under ESPP	983	764
Payment of Business Combination and PIPE Financing transaction costs	(8)	(1,089)
Net cash provided by financing activities	975	29,665
Net change in cash, cash equivalents and restricted cash	(36,452)	22,521
Cash, cash equivalents and restricted cash, beginning of period	145,024	30,660
Cash, cash equivalents and restricted cash, end of period	108,572	53,181
Supplemental cash flow information:
Cash paid for leases	934	907
Supplemental disclosure of noncash investing and financing activity:
Purchases of property and equipment included in accounts payable and accrued expenses	$ 823	653
Merger with BCTG and PIPE financing deferred offering costs included in accounts payable and accrued expenses		$ 401