Condensed Statements of Operations and Comprehensive Loss (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenue
Total revenue	$ 5,906	$ 9,007
Operating expenses
Research and development	20,818	16,216
General and administrative	5,401	4,604
Litigation settlement	0	49,954
Total operating expenses	26,219	70,774
Loss from operations	(20,313)	(61,767)
Interest income, net	40	94
Other expense, net	(48)	(51)
Net loss	(20,321)	(61,724)
Other comprehensive loss:
Net unrealized loss on marketable securities	(41)	(20)
Comprehensive loss	$ (20,362)	$ (61,744)
Net loss per share, basic and diluted	$ (0.62)	$ (1.95)
Weighted-average shares used in computing net loss per share, basic and diluted	32,879,188	31,578,636
Collaboration and License
Revenue
Total revenue	$ 5,906	$ 9,007