CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash flows from operating activities:
Net loss	$ (39,969)	$ (32,349)
Adjustments to reconcile net loss to net cash used by operating activities:
Stock-based compensation expense	3,991	2,482
Non-cash operating lease expense	681	447
Depreciation and amortization	176	36
Amortization of premium/discount on marketable securities	(1,000)
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	2,593	(235)
Other non-current assets		789
Accounts payable	419	(2,390)
Accrued expenses and other current liabilities	(4,193)	(473)
Operating lease liabilities	(237)	(444)
Net cash used in operating activities	(37,539)	(32,137)
Cash flows from investing activities:
Purchases of marketable securities	(102,493)
Proceeds from maturities of marketable securities	12,000
Purchases of property and equipment	(614)	(233)
Net cash used in investing activities	(91,107)	(233)
Cash flows from financing activities:
Proceeds from issuance of common stock upon initial public offering, net of offering costs		89,872
Payments of finance lease obligations	(21)	(21)
Proceeds from stock option exercised	803	11
Net cash provided by financing activities	782	89,862
Net increase in cash and cash equivalents	(127,864)	57,492
Cash, cash equivalents and restricted cash at beginning of period	187,532	92,347
Cash, cash equivalents and restricted cash at end of period	59,668	149,839
Supplemental disclosure of non-cash investing and financing activities:
Conversion of Series A & Series B Preferred Stock to common stock, net of Issuance costs		161,939
Deferred offering costs paid in the prior year		1,887
Right-of-use assets obtained in exchange for operating lease liabilities	14,292	77
Prepaid rent reclassified to right-of-use assets	$ 2,887
Purchases of property and equipment included in accounts payable and accrued expenses		$ 129