Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities
Net loss	$ (41,567,000)	$ (5,324,000)	$ (1,198,000)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation expense	249,000	8,000	0
Non-cash operating lease expense	704,000	124,000
Stock-based compensation expense	6,234,000	322,000
Net amortization of premiums and accretion of discounts on investments	516,000
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	(2,517,000)	(472,000)	7,000
Other assets	(1,218,000)	(12,000)
Accounts payable	640,000	418,000	(98,000)
Accrued expenses and other current liabilities	2,110,000	588,000	10,000
Operating lease liabilities	(589,000)	(111,000)
Net cash used in operating activities	(35,438,000)	(4,459,000)	(1,279,000)
Cash flows from investing activities
Purchase of property and equipment	(3,171,000)	(51,000)
Purchase of investments	(38,492,000)
Maturities of investments	8,308,000
Net cash used in investing activities	(33,355,000)	(51,000)
Cash flows from financing activities
Proceeds from issuance of common stock, net of issuance costs		10,192,000	1,440,000
Proceeds from issuance of Series A convertible preferred stock, net of issuance costs		55,738,000
Proceeds from issuance of common stock from initial public offering, net of issuance costs	152,753,000
Proceeds from exercise of stock options and purchases under the employee stock purchase plan	468,000
Proceeds (payment) from Paycheck Protection Program loan	(36,000)	36,000
Net cash provided by financing activities	153,185,000	65,966,000	1,440,000
Net increase in cash, cash equivalents, and restricted cash	84,392,000	61,456,000	161,000
Cash, cash equivalents, and restricted cash at the beginning of the period	61,695,000	239,000	78,000
Cash, cash equivalents, and restricted cash at the end of the period	146,087,000	61,695,000	239,000
Non-cash financing and investing activities:
Conversion of Series A convertible preferred stock into common stock	55,735,000
Acquisition of operating lease right-of-use assets	3,216,000	334,000
Acquisition of property and equipment included in accounts payable and accrued liabilities		38,000
Unpaid deferred offering costs		29,000
Reconciliation of cash, cash equivalents, and restricted cash:
Cash and cash equivalents	145,736,000	61,695,000	239,000
Restricted cash	351,000
Cash, cash equivalents, and restricted cash at the end of the period	$ 146,087,000	$ 61,695,000	$ 239,000