Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Operating activities
Net loss	$ (76,038)	$ (22,417)
Reconciliation of net loss to net cash used in operating activities:
Stock-based compensation	2,347	882
Non-cash interest expense	118	0
Accretion of premium and interest on marketable securities	(34)	0
Depreciation expense	17	13
Changes in operating assets and liabilities:
Prepaid expenses and other assets	(352)	(1,826)
Accounts payable	14	(244)
Accrued expenses	6,294	2,339
Net cash used in operating activities	(67,634)	(21,253)
Investing activities
Purchases of property and equipment	(86)	0
Purchase of marketable securities	(98,493)	0
Proceeds from sales and maturities of marketable securities	43,000	0
Net cash used in investing activities	(55,579)	0
Financing activities
Proceeds from issuance of common stock upon initial public offering, net of issuance costs	0	97,062
Proceeds from issuance of long-term debt	30,000	0
Payment of debt issuance cost	(470)	0
Cash paid for issuance costs of convertible preferred stock	0	(11)
Proceeds from issuance of common stock upon stock option exercises	19	0
Common stock repurchase	31	0
Net cash provided by financing activities	29,518	97,051
(Decrease) increase in cash and cash equivalents	(93,695)	75,798
Cash and cash equivalents, beginning of period	146,284	79,400
Cash and cash equivalents, end of period	52,589	155,198
Supplemental disclosure of cash flow information
Interest paid	254	0
Supplemental disclosure of non-cash financing activities
Conversion of convertible preferred stock upon IPO	$ 0	$ 97,188