BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 42,445	$ 53,359
Other current assets	254	1,062
Total current assets	42,699	54,421
Right-of-use asset - operating	343	437
Property and equipment, net	25	48
Other assets	18	18
Total assets	43,085	54,924
Current liabilities:
Accounts payable	334	1,117
Accrued compensation and employee benefits	173	925
Accrued expenses and other liabilities	625	1,456
Total current liabilities	1,132	3,498
Operating lease liability, net of current portion	280	383
Total liabilities	1,412	3,881
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.001 par value; 5 million shares authorized; no shares issued or outstanding at December 31, 2022 and 2021
Common stock, $0.001 par value; 100 million shares authorized at December 31, 2022 and 2021; 14,410,143 shares issued and outstanding at December 31, 2022 and 2021	14	14
Additional paid-in capital	225,061	224,505
Accumulated deficit	(183,402)	(173,476)
Total stockholders’ equity	41,673	51,043
Total liabilities and stockholders’ equity	$ 43,085	$ 54,924

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).

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

- Definition

Value received from shareholders in common stock-related transactions that are in excess of par value or stated value and amounts received from other stock-related transactions. Includes only common stock transactions (excludes preferred stock transactions). May be called contributed capital, capital in excess of par, capital surplus, or paid-in capital.