CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flow from operating activities
Net loss	$ (3,809)	$ (2,500)
Adjustments to reconcile net loss to net cash used in operating activities
Amortization	80	80
Depreciation	21	21
Stock-based compensation	318	184
(Increase) decrease in assets
Prepaid drug product for testing	(19)	(541)
Other current assets	(1,097)	(153)
Increase (decrease) in liabilities
Accounts payable and accrued expenses	(124)	130
Net cash used in operating activities	(4,630)	(2,779)
Net increase (decrease) in cash	(4,630)	(2,779)
Cash, beginning of period	8,854	13,859
Cash, end of period	$ 4,224	$ 11,080