Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2016

Summary of Significant Accounting Policies

Schedule of stock-based compensation expense

During the three months ended March 31, 2016 and 2015, the Company recorded stock-based compensation expense for employee and non-employee stock options, which was allocated as follows in the statements of operations (in thousands):

	Three Months Ended March 31,
	2016		2015

Research and development	$	172	$	168
General and administrative	376		133

Total	$	548	$	301

Schedule of anti-dilutive common stock equivalents excluded from calculation of diluted net loss per share

	Three Months Ended March 31,
	2016	2015
Convertible preferred stock	—	9,029,551
Stock options	2,197,030	1,388,218
Common stock warrants	36,084	34,839
Preferred stock warrants	—	24,566

	2,233,114	10,477,174