Condensed Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Operating activities
Net loss	$ (60,062)	$ (124,964)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation	2,790	3,563
Depreciation and amortization	1,343	410
Non-cash lease expense	1,008	528
Changes in operating assets and liabilities:
Accounts receivable	(453)	354
Inventory	(2,219)	0
Prepaid expenses and other current assets	(2,350)	(103)
Prepaid research and development	0	9,583
Other long-term assets	980	(981)
Accounts payable	(1,144)	6,633
Accrued expenses and other liabilities	(5,429)	49,428
Lease liabilities	(235)	(346)
Net cash used in operating activities	(65,771)	(55,895)
Investing activities
Purchase of property and equipment	(706)	(1,120)
Net cash used in investing activities	(706)	(1,120)
Financing activities
Proceeds from initial public offering, net of issuance costs	0	232,546
Proceeds from stock option exercises	98	211
Proceeds from stock issuances pursuant to employee stock purchase plan	216	0
Net cash provided by financing activities	314	232,757
Net (decrease) increase in cash, cash equivalents and restricted cash	(66,163)	175,742
Cash, cash equivalents and restricted cash at beginning of period	233,312	173,133
Cash, cash equivalents and restricted cash at end of period	167,149	348,875
Supplemental disclosure of noncash investing and financing activities
Right-of-use assets obtained in exchange for lease liability	19,245	13,499
Property and equipment purchases included in accounts payable and accrued expenses	265	354
Remeasurement of operating lease right-of-use asset for lease modification	$ 0	$ 208