CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue:
Collaboration revenue	$ 13,145	$ 890	$ 25,849	$ 14,081
Total revenue	13,145	890	25,849	14,081
Operating expenses:
Research and development	12,798	15,419	27,045	31,969
General and administrative	7,364	6,937	14,071	13,525
Total operating expenses	20,162	22,356	41,116	45,494
Loss from operations	(7,017)	(21,466)	(15,267)	(31,413)
Other income (expense):
Interest expense	(649)	(704)	(1,250)	(1,401)
Interest income	34	9	38	14
Other income	848	352	1,667	683
Realized gain	9		9
Total other income (expense), net	242	(343)	464	(704)
Net loss	$ (6,775)	$ (21,809)	$ (14,803)	$ (32,117)
Net loss per share attributable to common stockholders, basic and diluted	$ (0.30)	$ (0.99)	$ (0.66)	$ (1.51)
Weighted average common shares outstanding, basic and diluted	22,493,879	22,117,593	22,444,799	21,230,424