Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 253,029	$ 124,806
Marketable securities	297,967	253,458
Prepaid expenses and other current assets	7,105	6,203
Total current assets	558,101	384,467
Long-term marketable securities	195,881	33,731
Property and equipment, net	65,464	46,775
Operating lease right-of-use assets	96,320	63,168
Restricted cash	8,819	2,143
Intangible asset	59,195	59,195
Goodwill	140,627	140,627
Other non-current assets	5,000	190
TOTAL ASSETS	1,129,407	730,296
Current liabilities:
Accounts payable	2,219	2,253
Accrued compensation	21,131	16,020
Accrued expenses and other current liabilities	10,344	9,466
Operating lease liabilities	9,159	3,712
Contingent consideration	51,382
Success payment liabilities	5,000
Total current liabilities	99,235	31,451
Operating lease liabilities, net of current portion	101,784	68,197
Contingent consideration, net of current portion	102,361	121,901
Success payment liabilities, net of current portion	97,525	76,494
Other non-current liabilities		540
Total liabilities	400,905	298,583
Commitments and contingencies (Note 9)
Convertible preferred stock, $0.0001 par value; zero and 537,786 shares authorized as of December 31, 2021 and 2020, respectively; zero and 134,113 shares issued and outstanding as of December 31, 2021 and 2020, respectively		852,897
Stockholders' equity (deficit):
Preferred stock, $0.0001 par value; 50,000 and zero shares authorized as of December 31, 2021 and 2020, respectively; zero shares issued and outstanding as of December 31, 2021 and 2020
Common stock, $0.0001 par value; 750,000 and 707,000 shares authorized as of December 31, 2021 and 2020, respectively; 184,929 and 16,170 shares issued and outstanding as of December 31, 2021 and 2020, respectively	18	2
Additional paid-in capital	1,515,210	8,216
Accumulated other comprehensive income (loss)	(1,366)	30
Accumulated deficit	(785,360)	(429,432)
Total stockholders' equity (deficit)	728,502	(421,184)
TOTAL LIABILITIES, CONVERTIBLE PREFERRED STOCK, AND STOCKHOLDERS' EQUITY (DEFICIT)	$ 1,129,407	$ 730,296