STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities
Net loss	$ (42,813)	$ (17,123)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	272	185
Stock-based compensation	4,404	354
Changes in assets and liabilities:
Prepaid expenses, other assets and other long-term liabilities	(2,392)	(417)
Accounts payable	2,654	521
Accrued compensation	1,622	842
Accrued other expenses	2,746	1,004
Net cash used in operating activities	(33,507)	(14,634)
Cash flows from investing activities
Purchases of marketable securities	(288,203)	(24,178)
Sales of marketable securities	3,444
Maturities of marketable securities	43,200
Purchases of property and equipment	(668)	(203)
Net cash used in investing activities	(242,227)	(24,381)
Cash flows from financing activities
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	112	202
Proceeds from Employee Stock Purchase Plan	248
Net cash provided by financing activities	186,384	120,278
Net change in cash and cash equivalents	(89,350)	81,263
Cash and cash equivalents at beginning of period	104,916	23,653
Cash and cash equivalents at end of period	15,566	104,916
Supplemental disclosures of non-cash financing activities:
Conversion of convertible preferred stock upon closing of initial public offering	$ 160,214
Deferred offering costs included in accounts payable and accrued other expenses		719
Preferred stock issuance costs included in accrued other expenses		124
Series B-2 preferred stock
Cash flows from financing activities
Proceeds from issuance of convertible preferred stock		25,075
Series C preferred stock
Cash flows from financing activities
Proceeds from issuance of convertible preferred stock		$ 95,001