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Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Operating expenses:
Research and development	$ 6,750	$ 5,160	$ 12,039	$ 9,357
General and administrative	2,803	2,165	5,555	4,302
Total operating expenses	9,553	7,325	17,594	13,659
Loss from operations	(9,553)	(7,325)	(17,594)	(13,659)
Other income (expense):
Interest and investment income	60	257	227	483
Other (expense) income, net	(15)	(63)	(93)	7
Total other income, net	45	194	134	490
Net loss	$ (9,508)	$ (7,131)	$ (17,460)	$ (13,169)
Net loss per share - basic and diluted (in dollars per share)	$ (0.53)	$ (0.62)	$ (1.03)	$ (1.24)
Weighted-average common shares outstanding used in net loss per share - basic and diluted (in shares)	17,967,495	11,505,542	16,933,079	10,600,909

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