Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 107,736	$ 280,119
Investments	730,254	677,954
Accounts receivable	288	403
Contract asset	4,764	4,537
Prepaid expenses and other current assets	12,751	13,229
Total current assets	855,793	976,242
Property and equipment, net	8,922	6,543
Operating lease assets	19,828	20,780
Restricted cash	2,578	2,578
Intangible asset	2,300	2,300
Total assets	889,421	1,008,443
Current liabilities:
Accounts payable	4,296	8,276
Accrued expenses	22,108	13,557
Operating lease liabilities	2,002	1,844
Deferred revenue	83	248
Other current liabilities	15,413	396
Total current liabilities	43,902	24,321
Operating lease liabilities, net of current portion	20,019	21,056
Contingent consideration liability	45,863	50,258
Other liabilities		15,000
Total liabilities	109,784	110,635
Commitments and contingencies (Note 8)
Stockholders’ equity:
Common stock, $0.001 par value; 300,000,000 and 150,000,000 shares authorized at June 30, 2022 and December 31, 2021, respectively; 108,810,478 and 108,210,318 shares issued and outstanding at June 30, 2022 and December 31, 2021, respectively	109	109
Additional paid-in capital	1,698,368	1,666,887
Accumulated other comprehensive loss	(11,906)	(1,088)
Accumulated deficit	(906,934)	(768,100)
Total stockholders’ equity	779,637	897,808
Total liabilities and stockholders’ equity	$ 889,421	$ 1,008,443