Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		41 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022
OPERATING ACTIVITIES:
Net loss			$ (103,913)	$ (161,934)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	$ 3,800	$ 2,600	7,414	4,853
Stock-based compensation expense			17,666	9,099
Change in the estimated fair value of contingent consideration			(4,358)	18,556	$ 98,100
Change in the estimated fair value of success payment liabilities			(69,008)	32,469	31,100
Non-cash expense for operating lease right-of-use assets			5,682	2,838
Other non-cash items, net			(3,726)	(2,022)
Changes in operating assets and liabilities:
Prepaid expenses and other assets			(657)	(1,719)
Operating lease right-of-use assets and liabilities			111	3,386
Accounts payable			663	(373)
Accrued expenses and other liabilities			939	4,378
Net cash used in operating activities			(149,187)	(90,469)
INVESTING ACTIVITIES:
Purchases of marketable securities			(45,961)	(165,551)
Proceeds from maturities of marketable securities			148,160	195,914
Purchases of property and equipment			(11,924)	(16,596)
Net cash provided by investing activities			90,275	13,767
FINANCING ACTIVITIES:
Proceeds from initial public offering, net of issuance costs				626,405
Proceeds from employee stock purchase plan and exercise of stock options, net			2,231	631
Net cash provided by financing activities			2,231	627,036
Net increase (decrease) in cash, cash equivalents, and restricted cash			(56,681)	550,334
Cash, cash equivalents, and restricted cash at beginning of period			261,848	126,949
Cash, cash equivalents, and restricted cash at end of period	$ 205,167	$ 677,283	205,167	677,283	$ 205,167
SUPPLEMENTAL CASH FLOW INFORMATION:
Operating lease right-of-use assets obtained in exchange for lease obligations			21,073
Purchases of property and equipment included in accounts payable and accrued liabilities			3,346	3,414
Cash received for amounts related to tenant improvement allowances			541	$ 3,386
Remeasurement of operating lease right-of-use asset for lease modification			$ (12,801)