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	$ (64,476)	$ (27,208)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	565	457
Noncash operating lease expense	272
Amortization of premiums and discounts on marketable securities	38
Share-based compensation	10,425	1,992
Changes in operating assets and liabilities:
Prepaid expenses and other current and non-current assets	(17,833)	(574)
Accounts payable and other current liabilities	5,667	1,000
Accrued liabilities	10,063	3,812
Operating lease liabilities	145
Deferred rent		53
Net cash used in operating activities	(55,134)	(20,468)
Cash flows from investing activities
Purchases of property and equipment	(616)	(1,246)
Purchases of marketable securities	(119,374)
Proceeds from maturities of marketable securities	50,114
Net cash used in investing activities	(69,876)	(1,246)
Cash flows from financing activities
Proceeds from issuance of common stock (initial public offering), net of transactions costs	129,156
Proceeds from issuance of common stock (private placement), net of transactions costs	9,958
Proceeds from issuance of common stock (follow-on offering), net of transactions costs	121,535
Proceeds from issuance of Series C redeemable convertible preferred stock, net of transaction costs		119,118
Proceeds from the exercise of stock options	429	182
Payments for repurchase of restricted stock		(24)
Payments under finance leases	(59)	(330)
Payments of deferred offering costs		(43)
Net cash provided by financing activities	261,019	118,903
Net increase in cash and cash equivalents and restricted cash	136,009	97,189
Cash and cash equivalents and restricted cash, beginning of the year	31,032	46,795
Cash and cash equivalents and restricted cash, end of the period	167,041	143,984
Supplemental disclosures of noncash investing and financing activities:
Purchase of property and equipment included in accounts payable and accrued liabilities	35	$ 32
Deferred offering costs included in accounts payable and accrued liabilities	$ 816