CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flow from operating activities
Net loss	$ (2,382)	$ (3,809)
Adjustments to reconcile net loss to net cash used in operating activities
Amortization	80	80
Depreciation	108	21
Stock-based compensation	507	318
Change in fair value of warrant liability	(2,374)	0
Loss on extinguishment of warrant liability	440	0
(Increase) decrease in assets
Prepaid drug product for testing	(216)	(19)
Other current assets	(109)	(1,097)
Increase (decrease) in liabilities
Accounts payable and accrued expenses	(257)	(124)
Net cash used in operating activities	(4,203)	(4,630)
Cash flow from investing activities
Purchases of furniture, fixtures & equipment	(538)	0
Net cash used in investing activities	(538)	0
Cash flow from financing activities
Net proceeds from exercise of warrants	1,548	0
Net cash provided by financing activities	1,548	0
Net decrease in cash	(3,193)	(4,630)
Cash, beginning of period	9,375	8,854
Cash, end of period	6,182	4,224
Non-cash investing activities
Incremental fair value of warrant liability modification	797	0
Conversion of warrant liability to equity	175	0
Offering expenses included in accrued expense	$ 30	$ 0