Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 4,391	$ 15,192
Short-term marketable securities	2,049
Prepaid expenses and other current assets	825	1,089
Total current assets	7,265	16,281
Leasehold improvements, net		6
Total assets	7,265	16,287
Current liabilities:
Accounts payable	534	525
Accrued expenses	568	413
Total liabilities	1,102	938
Commitments and contingencies (Note 7)
Convertible preferred stock and stockholders’ equity:
Convertible preferred stock, $0.0001 par value; 15,000,000 shares authorized as of December 31, 2022 and 2021, respectively; zero shares issued and outstanding at December 31, 2022 and 2021, respectively
Common stock, $0.0001 par value, 250,000,000 shares authorized at December 31, 2022, and 2021, respectively; 9,097,701 and 8,933,989 shares issued and outstanding as of December 31, 2022, and 2021, respectively	1	1
Additional paid-in capital	37,318	36,632
Accumulated other comprehensive income	17
Accumulated deficit	(31,173)	(21,284)
Total convertible preferred stock and stockholders’ equity	6,163	15,349
Total liabilities, convertible preferred stock and stockholders’ equity	$ 7,265	$ 16,287

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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- 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).