Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flow from operating activities:
Net loss	$ (10,910)	$ (2,781)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation expense	1,024	23
Depreciation and amortization expense	11	2
Accretion of discounts and amortization of premiums on investments, net	29
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	2,129	(860)
Other long-term assets	(25)
Accounts payable	1,587	765
Accrued and other liabilities	497	(924)
Operating lease asset and liability, net	(3)
Net cash used in operating activities	(5,661)	(3,775)
Cash flow from investing activities:
Purchases of short-term investments	(32,890)
Sales and maturities of short-term investments	12,519
Purchases of property and equipment	(28)	(40)
Net cash used in investing activities	(20,399)	(40)
Cash flow from financing activities:
Proceeds from sale of Series A redeemable convertible preferred stock, net of issuance costs		7,983
Payments for deferred offering costs		(100)
Net cash provided by financing activities		7,883
Net (decrease) increase in cash and cash equivalents	(26,060)	4,068
Cash and cash equivalents at the beginning of the year	54,197	4,573
Cash and cash equivalents at the end of the period	28,137	8,641
Supplemental disclosure of noncash investing and financing activities:
Purchases of property and equipment in accounts payable	85
Deferred offering costs included in accounts payable		$ 207