CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 57,203	$ 24,027
Marketable securities	150,138	165,627
Prepaid expenses and other current assets	2,588	3,319
Total current assets	209,929	192,973
Property and equipment, net	2,921	2,741
Operating lease right-of-use assets	6,055
Other assets	3,091	2,922
Total assets	221,996	198,636
Current liabilities:
Accounts payable	4,097	1,999
Accrued expenses	7,507	6,326
Deferred revenue, current		1,016
Operating lease liabilities, current	1,503
Other current liabilities	39	254
Total current liabilities	13,146	9,595
Deferred rent, net of current portion		2,150
Deferred revenue, non-current		511
Operating lease liabilities, non-current	6,717
Total liabilities	19,863	12,256
Commitments and contingencies
Stockholders' equity:
Preferred stock
Common stock	3	3
Additional paid-in capital	526,573	470,629
Accumulated other comprehensive loss	(745)	(206)
Accumulated deficit	(323,698)	(284,046)
Total stockholders' equity	202,133	186,380
Total liabilities and stockholders' equity	$ 221,996	$ 198,636