CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities
Net loss	$ (44,396)	$ (32,093)
Adjustments to reconcile net loss to net cash used in operations:
Depreciation expense	1,001	665
Non-cash lease expense	2,512	1,504
Stock-based compensation	3,487	1,958
Other	120	4
Changes in operating assets and liabilities:
Operating lease liability	(8,238)	(1,141)
Prepaid expenses and other current assets	(728)	(4,064)
Accounts payable and accrued liabilities	(1,473)	(762)
Other assets	(181)	(285)
Net cash used in operating activities	(47,896)	(34,214)
Cash flow from investing activities
Purchases of marketable securities	(5,044)	(75,122)
Proceed from maturities of marketable securities	3,130
Purchases of property and equipment	(7,843)	(2,090)
Net cash used in investing activities	(9,757)	(77,212)
Cash flow from financing activities
Proceeds from issuance of redeemable convertible preferred stock		45,375
Proceeds from the issuance of common stock upon closing of initial public offering, net of underwriter fees		189,199
Payment of initial public offering costs		(2,215)
Proceeds from the issuance of common stock from open market sales agreeement	504
Proceeds from stock option exercises	300	44
Net cash provided by financing activities	804	232,403
Net (decrease) increase in cash, cash equivalents and restricted cash equivalents	(56,849)	120,977
Cash, cash equivalents and restricted cash equivalents, beginning of period	122,214	50,098
Cash, cash equivalents and restricted cash equivalents, end of period	65,365	171,075
Supplemental disclosure of non-cash activities
Lease incentive paid by the landlord on behalf of the Company	7,927
Operating right-of-use assets and operating lease liability recorded upon lease commencement	23,376	35
Purchases of property and equipment in accounts payable and accrued liabilities	$ 1,331	142
Conversion of redeemable convertible preferred stock to common stock upon closing of the initial public offering		$ 152,711