Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Operating expenses
Research and development	$ 13,601	$ 2,411	$ 24,177	$ 6,681
General and administrative	4,028	1,358	7,500	3,178
Total operating expenses	17,629	3,769	31,677	9,859
Loss from operations	(17,629)	(3,769)	(31,677)	(9,859)
Interest income and other, net	7	137	74	480
Net loss and comprehensive loss	$ (17,622)	$ (3,632)	$ (31,603)	$ (9,379)
Net loss per share attributable to common stockholders—basic and diluted	$ (1.74)	$ (0.36)	$ (3.13)	$ (0.93)
Weighted-average common shares outstanding—basic and diluted	10,109,847	10,091,100	10,099,134	10,091,100