Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 119,445	$ 280,119
Investments	778,733	677,954
Accounts receivable	269	403
Contract asset	4,677	4,537
Prepaid expenses and other current assets	12,663	13,229
Total current assets	915,787	976,242
Property and equipment, net	8,904	6,543
Operating lease assets	20,309	20,780
Restricted cash	2,578	2,578
Intangible asset	2,300	2,300
Total assets	949,878	1,008,443
Current liabilities:
Accounts payable	8,053	8,276
Accrued expenses	15,217	13,557
Operating lease liabilities	1,922	1,844
Deferred revenue	166	248
Other current liabilities	16,332	396
Total current liabilities	41,690	24,321
Operating lease liabilities, net of current portion	20,555	21,056
Contingent consideration liability	45,663	50,258
Other liabilities		15,000
Total liabilities	107,908	110,635
Commitments and contingencies (Note 8)
Stockholders’ equity:
Common stock, $0.001 par value; 150,000,000 shares authorized at March 31, 2022 and December 31, 2021; [-] and 108,210,318 shares issued and outstanding at March 31, 2022 and December 31, 2021, respectively;	109	109
Additional paid-in capital	1,681,225	1,666,887
Accumulated other comprehensive loss	(9,218)	(1,088)
Accumulated deficit	(830,146)	(768,100)
Total stockholders’ equity	841,970	897,808
Total liabilities and stockholders’ equity	$ 949,878	$ 1,008,443