Condensed Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flows from operating activities
Net loss	$ (66,819)	$ (88,256)
Adjustments to reconcile net loss to net cash used in operating activities:
Share-based compensation expense	25,674	18,924
Depreciation expense	38	12
Accretion of discounts on short-term investments, net	(2,189)	(5,858)
Amortization of intangible assets	298	0
Amortization of operating right-of-use asset	188	169
Gain from sale of priority review voucher	(108,000)	0
Changes in operating assets and liabilities:
Accounts receivable, net	(9,136)	0
Inventory	(129)	0
Prepaid expenses and other current assets	(3,078)	(1,297)
Deposits and other long-term assets	97	210
Accounts payable	3,868	4,305
Accrued expenses and other current liabilities	60,548	3,569
Operating lease liability	(218)	(195)
Net cash used in operating activities	(98,858)	(68,417)
Cash flows from investing activities
Cash paid for purchase of short-term investments	(168,761)	(264,744)
Proceeds from maturity of short-term investments	184,232	274,000
Cash paid for acquired intangible assets	(17,100)	0
Proceeds from sale of priority review voucher	108,000	0
Cash paid for purchase of property and equipment	(26)	(175)
Net cash provided by investing activities	106,345	9,081
Cash flows from financing activities
Proceeds from the issuance of common stock, net	0	161,409
Proceeds from issuance of common stock upon stock option exercises	372	1,223
Proceeds from issuance of common stock upon Employee Stock Purchase Plan purchase	973	653
Cash provided by financing activities	1,345	163,285
Net increase in cash and cash equivalents	8,832	103,949
Cash and cash equivalents, beginning of period	230,784	85,262
Cash and cash equivalents, end of period	239,616	189,211
Supplemental disclosures of noncash activities
Cash not yet paid for upfront license agreement payment	55,000	0
Unpaid and Deferred Offering Costs	$ 0	$ 307