Condensed Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities
Net loss	$ (29,990)	$ (92,257)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	20	1
Change in fair value of preferred stock tranche rights liability and preferred stock warrant liability		81,157
Stock-based compensation expense	2,173	557
Amortization of premiums and accretion of discounts on marketable securities, net	575	(6)
Amortization of right-of-use asset	100
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	2,058	(4,297)
Other assets	(78)	(13)
Accounts payable	996	(149)
Operating lease liability	(100)
Accrued expenses and other current liabilities	296	685
Net cash used in operating activities	(23,950)	(14,322)
Cash flows from investing activities
Purchases of marketable securities	(12,129)	(94,095)
Proceeds from maturities and sales of marketable securities	71,860
Purchases of property and equipment	(126)	(14)
Net cash provided by (used in) investing activities	59,605	(94,109)
Cash flows from financing activities
Proceeds from issuance of Series B milestone shares, net of issuance costs		30,031
Proceeds from issuance of common stock upon initial public offering, net of offering costs		168,559
Payment of deferred offering costs	(296)
Proceeds from the exercise of stock options	19	2
Net cash provided by (used in) financing activities	(277)	200,456
Net change in cash and cash equivalents	35,378	92,025
Cash and cash equivalents at the beginning of the period	122,162	43,777
Cash and cash equivalents at the end of the period	157,540	135,802
Supplemental disclosure of noncash investing and financing activities
Right-of-use asset obtained in exchange for operating lease liabilities	233
Deferred offering costs in accrued expenses and other current liabilities	41	0
Reclassification of preferred stock tranche rights liability upon share issuance	0	81,190
Conversion of convertible preferred stock into common stock upon initial public offering	0	174,504
Reclassification of warrant liability upon exercise of preferred stock warrant		5,380
Series A -1 Convertible Preferred Stock Warrant Liability [Member]
Cash flows from financing activities
Proceeds from exercise of warrants		1,250
Common Stock Warrants [Member]
Cash flows from financing activities
Proceeds from exercise of warrants		$ 614