Selected Balance Sheet Information (Tables)

9 Months Ended

Sep. 30, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Other Current Assets [Table Text Block]

Prepaid expenses and other current assets (in thousands)

	September 30, 2016		December 31, 2015
Intrexon prepaid research and development expenses	$	-	$	643
Prepaid clinical research organizations		2,175		8,329
Prepaid insurances		75		339
Other prepaid expenses		547		208
Other current assets		294		-
Total	$	3,091	$	9,519

Property, Plant and Equipment [Table Text Block]

Property and equipment, net (in thousands)

	September 30, 2016		December 31, 2015
Computer and office equipment	$	389	$	346
Software		11		11
Leasehold improvements		373		242
		773		599
Less accumulated depreciation and amortization		(191)		(105)
Total	$	582	$	494

Accrued Expenses [Table Text Block]

Accrued expenses (in thousands)

	September 30, 2016		December 31, 2015
Accrued manufacturing costs	$	191	$	-
Accrued vendor payments		341		133
Accrued clinical consulting services		935		164
Other accrued expenses		23		-
Total	$	1,490	$	297

Accrued Employee Benefits [Table Text Block]

Accrued employee benefits (in thousands)

	September 30, 2016		December 31, 2015
Accrued bonus expense	$	1,065	$	-
Accrued vacation expense		193		153
Other accrued employee benefits		83		124
Total	$	1,341	$	277