Balance Sheets Components (Tables)

3 Months Ended

Mar. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following (in thousands):

	March 31, 2018		December 31, 2017
	(unaudited)
Accrued personnel expenses	$	470	$	1,108
Accrued clinical and development expenses	2,506		2,250
Other	198		201
Total	$	3,174	$	3,559