Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Assets, Current [Abstract]
Cash and cash equivalents	$ 3,702	$ 109
Marketable securities, available-for-sale	3,808	0
Prepaid expenses and other current assets	619	565
Total current assets	8,129	674
Other assets	206	279
Property and equipment, net	0	2
Total assets	8,335	955
Liabilities, Current [Abstract]
Accounts payable	918	1,226
Accrued expenses	1,430	847
Note payable, current	0	47
Other current liabilities	97	105
Total current liabilities	2,445	2,225
Note payable, non-current	0	14
Other liabilities	72	170
Total liabilities	2,517	2,409
Commitments and contingencies (Note 9)
Stockholders' equity (deficit):
Common stock, $0.0001 par value; 250,000,000 shares authorized; 6,812,836 and 4,506,216 shares issued and outstanding as of December 31, 2021 and 2020, respectively	0	0
Additional paid-in-capital	27,722	11,145
Accumulated other comprehensive loss	(2)	0
Accumulated deficit	(21,902)	(12,599)
Total stockholders' equity (deficit)	5,818	(1,454)
Total liabilities and stockholders' equity (deficit)	$ 8,335	$ 955

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).