Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 132,409	$ 189,567
Prepaid expenses and other current assets	9,672	9,578
Total current assets	142,081	199,145
Property and equipment, net	3,618	4,126
Restricted cash	492	492
Other assets	53	74
Total assets	146,244	203,837
Current liabilities:
Accounts payable	28	3,486
Accrued expenses and other current liabilities	12,574	15,638
Deferred rent	183	262
Total current liabilities	12,785	19,386
Note payable, net of discount	15,104	14,945
Deferred rent, net of current portion	12	30
Total liabilities	27,901	34,361
Commitments and contingencies (Note 6)
Stockholders’ equity:
Common stock, $0.0001 par value; 150,000 shares authorized; 43,696 and 43,652 shares issued and outstanding as of June 30, 2022 and December 31, 2021, respectively	4	4
Additional paid-in capital	559,768	553,014
Accumulated deficit	(441,429)	(383,542)
Total stockholders’ equity	118,343	169,476
Total liabilities and stockholders’ equity	$ 146,244	$ 203,837

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).