Condensed Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities
Net loss	$ (48,225)	$ (30,117)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	280	194
Stock-based compensation	7,188	2,531
Amortization (accretion) of premium (discount) on marketable securities, net	1,212
Amortization of right-of-use asset	166
Changes in assets and liabilities:
Prepaid expenses and other assets	(1,731)	(1,951)
Accounts payable	(529)	1,103
Accrued compensation	(93)	855
Accrued other expenses	(191)	3,297
Lease liability	1,108
Net cash used in operating activities	(40,815)	(24,088)
Cash flows from investing activities
Purchases of marketable securities	(145,697)	(273,159)
Sales of marketable securities	26,045
Maturities of marketable securities	126,924	17,400
Purchases of property and equipment	(2,253)	(589)
Net cash provided by (used in) investing activities	5,019	(256,348)
Cash flows from financing activities
Proceeds from issuance of common stock, net of underwriting discounts and commissions	129,720
Debt proceeds	35
Proceeds from initial public offering of common stock, net of underwriting discounts and commissions and offering costs		186,148
Payment of preferred stock issuance costs		(124)
Exercise of stock options	380	67
Payment of offering costs and deferred offering costs	(336)
Proceeds from Employee Stock Purchase Plan	178
Net cash provided by financing activities	129,977	186,091
Net change in cash and cash equivalents	94,181	(94,345)
Cash and cash equivalents at beginning of period	15,566	104,916
Cash and cash equivalents at end of period	109,747	10,571
Supplemental disclosures of non-cash investing and financing activities:
Right-of-use asset obtained in exchange for new operating lease liability, net of tenant improvement receivable	1,488
Property and equipment purchases included in accounts payable and accrued other expenses	2,580
Offering costs and deferred offering costs included in accounts payable and accrued other expenses	470
Property and equipment purchases included in debt	$ 32
Conversion of convertible preferred stock upon closing of initial public offering		$ 160,214