CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 104,741	$ 90,121
Short-term investments	24,871	93,822
Interest receivable	96	206
Prepaid expenses and other current assets	230	3,486
Total current assets	129,938	187,635
Restricted cash	554	852
Other assets		122
Operating lease right-of-use assets	495	2,187
Total assets	130,987	190,796
Current liabilities:
Accounts payable	110	6,761
Accrued expenses	1,582	10,086
Operating lease liability, current	667	10,781
Total current liabilities	2,359	28,367
Operating lease liability, long term	8,336	16,648
Total liabilities	10,695	45,015
Stockholders’ equity:
Preferred stock, $0.0001 par value: 10,000,000 shares authorized at June 30, 2024 and December 31, 2023, respectively; 0 shares issued and outstanding at June 30, 2024 and December 31, 2023, respectively
Common stock, $0.0001 par value: 300,000,000 shares authorized at June 30, 2024 and December 31, 2023, respectively; 115,312,411 and 114,153,538 shares issued at June 30, 2024 and December 31, 2023, respectively; and 115,312,411 and 114,148,991 shares outstanding at June 30, 2024 and December 31, 2023, respectively	11	11
Additional paid-in capital	812,988	802,025
Accumulated other comprehensive loss	(139)	(62)
Accumulated deficit	(692,568)	(656,193)
Total stockholders’ equity	120,292	145,781
Total liabilities and stockholders’ equity	$ 130,987	190,796
Related Party
Current liabilities:
Amount due to related party		$ 739

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

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).