Accounts payable and other liabilities

12 Months Ended

Dec. 31, 2018

Payables and Accruals [Abstract]

Accounts payable and other liabilities

5. Accounts payable and other liabilities

(in thousands)	DECEMBER 31, 2018		DECEMBER 31, 2017
Trade accounts payable	$	702	$	6,016
Accrued clinical/preclinical expenses		3,655		2,667
Accrued compensation and vacation		21		1,553
Other accrued liabilities		249		720
	$	4,627	$	10,956