CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Operating expenses
Research and development	$ 1,375	$ 2,342	$ 3,296	$ 4,101
General and administrative	896	740	2,984	2,579
Total operating expenses	2,271	3,082	6,280	6,680
Net operating loss	(2,271)	(3,082)	(6,280)	(6,680)
Other income (loss)
Interest income	29	1	70	6
Total other income	29	1	70	6
Net loss	$ (2,242)	$ (3,081)	$ (6,210)	$ (6,674)
Net loss per share, basic and diluted (in dollars)	$ (0.78)	$ (5.38)	$ (2.51)	$ (11.73)
Basic and diluted weighted average number of common shares outstanding	2,872	573	2,471	569