STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Costs and expenses:
Research and development	$ 347	$ 740	$ 1,449	$ 3,614
General and administrative	900	922	3,087	2,977
Total costs and expenses	1,247	1,662	4,536	6,591
Loss from operations	(1,247)	(1,662)	(4,536)	(6,591)
Interest and other income	50	40	136	124
Interest expense	(1)	(2)	(7)	(8)
Loss before income taxes	(1,198)	(1,624)	(4,407)	(6,475)
Income tax benefit	42	31	151	31
Net loss	(1,156)	(1,593)	(4,256)	(6,444)
Change in unrealized loss on marketable securities				2
Comprehensive loss	$ (1,156)	$ (1,593)	$ (4,256)	$ (6,442)
Net loss per share:
Basic and diluted	$ (0.76)	$ (2.06)	$ (3.46)	$ (8.39)
Weighted average shares outstanding:
Basic and diluted	1,521,259	773,545	1,229,289	767,989