Unaudited Condensed Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash flows from operating activities
Net loss	$ (48,778)	$ (46,535)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	1,548	1,424
Stock-based compensation	26,769	15,522
Accretion of discounts on investments, net	(7,658)	(5,627)
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	(3,077)	(60)
Other long-term assets	(314)	(924)
Accounts payable	25	(50)
Accrued expenses	6,060	(1,104)
Deferred revenue	(1,705)	(3,979)
Operating lease right-of-use assets and liabilities, net	41	659
Net cash used in operating activities	(27,089)	(40,674)
Cash flows from investing activities
Purchases of property and equipment	(317)	(1,335)
Purchases of short-term investments	(446,545)	(284,232)
Maturities of short-term investments	154,915	233,250
Net cash used in investing activities	(291,947)	(52,317)
Cash flows from financing activities
Proceeds from exercise of common stock options and employee stock purchase plan	6,526	2,187
Proceeds from the issuance of common stock and pre-funded common stock warrants, net of issuance costs	320,059	56,530
Net cash provided by financing activities	326,585	58,717
Net increase (decrease) in cash, cash equivalents and restricted cash	7,549	(34,274)
Cash, cash equivalents and restricted cash - beginning of year	20,021	52,242
Cash, cash equivalents and restricted cash - end of period	27,570	17,968
Supplemental disclosure of noncash investing and financing activities
Unpaid property and equipment	42	430
Vesting of restricted common stock	13	144
Unrealized gain on available-for-sale securities, net	$ 7,166	$ 360