Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 49,476	$ 29,754
Marketable securities, current	220,849	246,399
Accounts receivable	528	1,473
Prepaid expenses and other current assets	7,599	9,931
Total current assets	278,452	287,557
Marketable securities, non-current	34,706	60,962
Property and equipment, net	7,640	7,400
Right-of-use asset	68,599	70,116
Restricted cash	3,279	3,279
Other assets	3,360	1,526
Total assets	396,036	430,840
Current liabilities:
Accounts payable	1,034	1,172
Accrued expenses and other current liabilities	16,295	19,769
Deferred revenue, current	14,937	16,618
Operating lease liability, current	4,827	4,700
Long-term debt − related party, current and net of discount	2,287	2,287
Total current liabilities	39,380	44,546
Deferred revenue, net of current	15,845	16,895
Operating lease liability, net of current	69,720	70,970
Long-term debt − related party, net of current and discount	8,621	9,195
Total liabilities	133,566	141,606
Commitments and contingencies (see Note 11)
Stockholders’ equity:
Preferred stock, par value of $0.0001 per share; 10,000,000 shares authorized, and no shares issued or outstanding as of March 31, 2023 and December 31, 2022, respectively	0	0
Common stock, par value of $0.0001 per share; 150,000,000 shares authorized, and 49,052,509 and 48,966,216 shares issued and outstanding as of March 31, 2023 and December 31, 2022, respectively	5	5
Additional paid-in capital	695,605	689,256
Accumulated other comprehensive loss	(2,470)	(4,137)
Accumulated deficit	(430,670)	(395,890)
Total stockholders’ equity	262,470	289,234
Total liabilities and stockholders’ equity	$ 396,036	$ 430,840