Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 161,663	$ 189,567
Prepaid expenses and other current assets	9,258	9,578
Total current assets	170,921	199,145
Property and equipment, net	3,867	4,126
Restricted cash	492	492
Other assets	63	74
Total assets	175,343	203,837
Current liabilities:
Accounts payable	4,037	3,486
Accrued expenses and other current liabilities	12,879	15,638
Deferred rent	214	262
Total current liabilities	17,130	19,386
Note payable, net of discount	15,020	14,945
Deferred rent, net of current portion	30	30
Total liabilities	32,180	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 March 31, 2022 and December 31, 2021, respectively	4	4
Additional paid-in capital	556,534	553,014
Accumulated deficit	(413,375)	(383,542)
Total stockholders’ equity	143,163	169,476
Total liabilities and stockholders’ equity	$ 175,343	$ 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).

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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).