Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 44,881	$ 29,754
Marketable securities, current	222,404	246,399
Accounts receivable	1,028	1,473
Prepaid expenses and other current assets	6,074	9,931
Total current assets	274,387	287,557
Marketable securities, non-current	19,415	60,962
Property and equipment, net	7,572	7,400
Right-of-use asset	67,067	70,116
Restricted cash	3,279	3,279
Other assets	3,288	1,526
Total assets	375,008	430,840
Current liabilities:
Accounts payable	2,247	1,172
Accrued expenses and other current liabilities	16,729	19,769
Deferred revenue, current	13,971	16,618
Operating lease liability, current	4,956	4,700
Long-term debt − related party, current and net of discount	10,335	2,287
Total current liabilities	48,238	44,546
Deferred revenue, net of current	24,647	16,895
Operating lease liability, net of current	68,416	70,970
Long-term debt − related party, net of current and discount	0	9,195
Total liabilities	141,301	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 June 30, 2023 and December 31, 2022, respectively	0	0
Common stock, par value of $0.0001 per share; 150,000,000 shares authorized, and 49,065,098 and 48,966,216 shares issued and outstanding as of June 30, 2023 and December 31, 2022, respectively	5	5
Additional paid-in capital	702,068	689,256
Accumulated other comprehensive loss	(1,774)	(4,137)
Accumulated deficit	(466,592)	(395,890)
Total stockholders’ equity	233,707	289,234
Total liabilities and stockholders’ equity	$ 375,008	$ 430,840