Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 96,860	$ 117,433
Marketable securities, current	34,778	15,106
Accounts receivable	10,000
Related party collaboration receivable	225	732
Prepaid expenses and other current assets	5,079	3,427
Total current assets	146,942	136,698
Property and equipment, net	18,082	21,920
Deposits and other non-current assets	1,515	1,779
Operating lease, right-of-use asset	15,941	33,458
Total assets	182,480	193,855
Current liabilities:
Accounts payable	1,337	574
Accrued expenses	12,529	10,950
Other current liabilities	2,746	5,571
Deferred revenue, current	56,630	33,886
Total current liabilities	73,242	50,981
Deferred revenue, non-current	7,391	8,210
Other non-current liabilities	22,024	39,609
Total liabilities	102,657	98,800
Commitments and contingencies (see note 8)
Stockholders' equity:
Preferred stock $0.001 par value: 5,000,000 shares authorized at September 30, 2022 and December 31, 2021; no shares issued and outstanding at September 30, 2022 and December 31, 2021
Common stock, $0.001 par value: 120,000,000 shares authorized at September 30, 2022 and December 31, 2021; 38,520,336 and 37,918,395 shares issued and outstanding at September 30, 2022 and December 31, 2021, respectively	38	38
Additional paid-in capital	450,008	442,259
Accumulated other comprehensive loss	(337)	(138)
Accumulated deficit	(369,886)	(347,104)
Total stockholders' equity	79,823	95,055
Total liabilities and stockholders' equity	$ 182,480	$ 193,855