CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities:
Net loss	$ (35,155)	$ (29,609)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation expense	4,751	510
Depreciation	1	0
Change in fair value of preferred stock tranche liability	0	9,928
Change in fair value of anti-dilution liability	0	682
Noncash operating lease expense	37	0
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	(3,071)	(728)
Other assets	(1,037)	0
Accounts payable	290	1,216
Accrued expenses and other current liabilities	(708)	2,255
Changes in operating lease liabilities	(25)	0
Net cash used in operating activities	(34,917)	(15,746)
Cash flows from investing activities:
Purchase of property and equipment	(36)	0
Net cash used in investing activities	(36)	0
Cash flows from financing activities:
Proceeds from issuance of preferred stock, net of issuance costs	0	135,749
Proceeds from issuance of common stock in initial public offering, net of issuance costs and underwriting fees	198,178	0
Proceeds from the exercise of stock options	107	0
Payment of offering costs	(2,294)	0
Net cash provided by financing activities	195,991	135,749
Net increase in cash, cash equivalents and restricted cash	161,038	120,003
Cash, cash equivalents and restricted cash at beginning of period	128,280	8,277
Cash, cash equivalents and restricted cash at end of period	289,318	128,280
Supplemental disclosure of cash flows:
Right of use asset obtained in exchange for operating lease liability	$ 4,364	$ 0
Conversion of preferred stock into common stock	170,184	0
Preferred stock tranche liability established in connection with the issuance of redeemable convertible preferred stock	$ 0	$ 2,979
Issuance of redeemable convertible preferred stock in settlement of preferred stock tranche liability	0	17,149
Gain on extinguishment of preferred stock tranche liability record to additional paid in capital	0	750
Issuance of redeemable convertible preferred stock in settlement of anti-dilution right liability	$ 0	$ 1,566