CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash flows from operating activities
Net loss	$ (51,198)	$ (56,813)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	871	565
Amortization of operating lease right-of-use assets	569	272
Finance lease right-of-use asset expensed	1,262
Amortization of premiums and discounts on marketable securities	(4,689)	38
Share-based compensation	20,560	10,425
Changes in operating assets and liabilities:
Receivable from collaboration partner	(29,431)
Prepaid expenses and other current and non-current assets	(16,817)	(17,170)
Accounts payable and other current liabilities	(3,797)	5,667
Accrued liabilities	(1,596)	1,737
Operating lease liabilities	10,281	145
Contract liability	233,412
Net cash provided by (used in) operating activities	159,427	(55,134)
Cash flows from investing activities
Purchases of property and equipment	(8,208)	(616)
Purchases of marketable securities	(162,144)	(119,374)
Proceeds from maturities of marketable securities	154,850	50,114
Net cash used in investing activities	(15,502)	(69,876)
Cash flows from financing activities
Proceeds from issuance of common stock in accordance with Gilead Stock Purchase Agreement	100,000
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 exercise of stock options	3,340	429
Proceeds from stock issued pursuant to employee stock purchase plan	528
Payments under finance leases	(8,307)	(59)
Net cash provided by financing activities	95,561	261,019
Net increase in cash and cash equivalents and restricted cash	239,486	136,009
Cash and cash equivalents and restricted cash, beginning of the year	66,680	31,032
Cash and cash equivalents and restricted cash, end of the period	306,166	167,041
Supplemental disclosure of cash flow information:
Cash paid for income taxes	212
Supplemental disclosures of noncash investing and financing activities:
Purchase of property and equipment included in accounts payable and accrued liabilities	$ 3,323	35
Deferred offering costs included in accounts payable and accrued liabilities		$ 816