Condensed Consolidated Statements of Operations and Comprehensive Loss (unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenues:
Total revenues	$ 33,581	$ 9,461	$ 78,345	$ 28,383
Operating expenses:
Research and development (($26,560), ($756), ($92,667) and ($6,856) from a related party)	76,684	71,254	207,800	206,412
General and administrative (($493), $0, ($690) and $0 from a related party)	26,294	16,343	76,104	48,990
Total operating expenses	102,978	87,597	283,904	255,402
Loss from operations	(69,397)	(78,136)	(205,559)	(227,019)
Non-operating income (expense):
Interest and other income, net	5,013	161	8,456	481
Effective interest on liability for sale of future royalties	(535)		(1,437)
Total non-operating income, net	4,478	161	7,019	481
Net loss before income taxes	(64,919)	(77,975)	(198,540)	(226,538)
Income tax expense	0	0	(1,004)	0
Net loss	(64,919)	(77,975)	(199,544)	(226,538)
Other comprehensive loss	(2,557)	(46)	(8,540)	(136)
Comprehensive loss	$ (67,476)	$ (78,021)	$ (208,084)	$ (226,674)
Net loss per share, basic	$ (0.90)	$ (1.11)	$ (2.78)	$ (3.28)
Net loss per share, diluted	$ (0.90)	$ (1.11)	$ (2.78)	$ (3.28)
Weighted-average number of shares used to compute basic net loss per share	72,236,283	70,110,138	71,752,246	68,990,290
Weighted-average number of shares used to compute diluted net loss per share	72,236,283	70,110,138	71,752,246	68,990,290
License and Development Services Revenue
Revenues:
Total revenues	$ 23,742		$ 48,374
Other Collaboration Revenue
Revenues:
Total revenues	$ 9,839	$ 9,461	$ 29,971	$ 28,383