Unaudited Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating expenses:
Research and development	$ 10,857	$ 6,361
General and administrative	3,696	1,601
Total operating expenses	14,553	7,962
Loss from operations	(14,553)	(7,962)
Other income (expense):
Interest income	36	229
Interest expense	(244)	(253)
Other expense	(7)	(126)
Total other income (expense)	(215)	(150)
Net loss	(14,768)	(8,112)
Other comprehensive loss:
Unrealized loss on available-for-sale securities, net	(2)	(68)
Comprehensive loss	$ (14,770)	$ (8,180)
Net loss per share, basic and diluted	$ (0.57)	$ (3.23)
Weighted average shares of common stock outstanding, basic and diluted	26,007,692	2,509,319