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STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Costs and expenses:
Research and development	$ 3,720	$ 1,716	$ 9,227	$ 5,170
General and administrative	992	1,101	3,094	3,110
Total costs and expenses	4,712	2,817	12,321	8,280
Loss from operations	(4,712)	(2,817)	(12,321)	(8,280)
Interest and other income	53	4	121	7
Interest expense		(1)		(4)
Net loss	(4,659)	(2,814)	(12,200)	(8,277)
Change in unrealized loss on marketable securities	(19)		(6)
Comprehensive loss	$ (4,678)	$ (2,814)	$ (12,206)	$ (8,277)
Net loss per share:
Basic and diluted	$ (0.51)	$ (0.31)	$ (1.35)	$ (1.54)
Weighted average shares outstanding:
Basic and diluted	9,068,376	9,034,016	9,062,516	5,358,629

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