Unaudited Condensed Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities
Net loss	$ (13,410)	$ (2,284)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	81	9
Stock-based compensation	3,958	123
Amortization (accretion) of premiums/discounts on investments, net	(24)	0
Changes in operating assets and liabilities:
Accounts receivable	0	7,625
Prepaid expenses and other current assets (includes related party amounts of $23 and $(50), respectively)	(1,400)	(13)
Other long-term assets	55	0
Accounts payable	(740)	347
Accrued expenses (includes related party amounts of $(32) and $(544), respectively)	1,158	(240)
Deferred revenue	(1,214)	(4)
Operating lease right-of-use assets and liabilities, net	14	0
Net cash (used in) provided by operating activities	(11,522)	5,563
Cash flows from investing activities
Purchases of property and equipment	(971)	(153)
Purchases of short-term investments	(45,061)	0
Maturities of short-term investments	77,100	0
Net cash provided by (used in) investing activities	31,068	(153)
Cash flows from financing activities
Proceeds from exercise of vested and unvested common stock options and employee stock purchase plan	1	1,646
Payment of initial public offering costs	0	(100)
Net cash provided by financing activities	1	57,546
Net increase in cash and cash equivalents	19,547	62,956
Cash, cash equivalents and restricted cash -- beginning of period	36,398	7,813
Cash, cash equivalents and restricted cash -- end of period	55,945	70,769
Supplemental disclosure of noncash investing and financing activities
Unpaid fixed asset additions	396	4
Vesting of restricted common stock	503	8
Unpaid equity issuance costs	0	278
Unrealized loss on short-term investments	(1,297)	0
Series A Convertible Preferred Stock [Member]
Cash flows from financing activities
Proceeds from issuance of Series A convertible preferred stock, net of issuance costs	$ 0	$ 56,000