Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 45,972	$ 86,508
Short-term investments	70,599	39,000
Prepaid expenses and other current assets	1,914	1,567
Total current assets	118,485	127,075
Right-of-use asset	1,087	394
Other assets	245	45
Total assets	119,817	127,514
Current liabilities:
Accounts payable	790	1,557
Accrued expenses	5,073	3,281
Current portion of operating lease liabilities	578	365
Total current liabilities	6,441	5,203
Long term portion of operating lease liabilities	504
Total liabilities	6,945	5,203
Commitments
Stockholders' equity:
Common stock, $0.001 par value per share, 150,000,000 shares authorized; 15,748,323 and 13,016,955 shares issued and outstanding at September 30, 2022 and December 31, 2021, respectively	16	13
Additional paid-in capital	511,053	481,709
Accumulated other comprehensive loss	(215)
Accumulated deficit	(494,380)	(455,809)
Total stockholders' equity	112,872	122,311
Total liabilities and stockholders' equity	119,817	127,514
Preferred shares
Stockholders' equity:
Preferred stock
Series X redeemable convertible preferred stock
Stockholders' equity:
Preferred stock	$ 96,398	$ 96,398

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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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).