CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019
Cash flow from operating activities
Net loss	$ (5,364)	$ (3,968)
Adjustments to reconcile net loss to net cash used in operating activities
Stock-based compensation	289	338
Amortization of right of use assets	38	56
Depreciation	36	99
(Increase) decrease in operating assets
Prepaid drug product for testing	(303)	(322)
Other current assets	(646)	(42)
Increase (decrease) in operating liabilities
Accounts payable and accrued expenses	(23)	(328)
Lease liabilities	(42)	(56)
Net cash used in operating activities	(6,015)	(4,223)
Cash flow from financing activities
Net proceeds from sale of common stock	0	19,411
Net proceeds from exercise of warrants	0	914
Net cash provided by financing activities	0	20,325
Net (decrease) increase in cash	(6,015)	16,102
Cash, beginning of period	20,426	1,004
Cash, end of period	$ 14,411	$ 17,106

Amount of Increase Decrease in Operating Lease Liabilities.

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