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Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2019

Summary of Significant Accounting Policies

Schedule of stock-based compensation expense

During the three and six months ended June 30, 2019 and 2018, the Company recorded stock-based compensation expense, which was allocated as follows in the condensed consolidated statements of operations (in thousands):

		Three Months Ended June 30,						Six Months Ended June 30,
		2019			2018			2019			2018
Research and development		$	165		$	164		$	300		$	337
General and administrative			276			282			549			587
Total		$	441		$	446		$	849		$	924

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

		Three Months Ended June 30,				Six Months Ended June 30,
		2019		2018		2019		2018
Stock options		763,592		368,922		763,592		368,922
Common stock warrants		6,193,749		4,202,457		6,193,749		4,202,457
		6,957,341		4,571,379		6,957,341		4,571,379

Schedule of reconciliation of cash, cash equivalents and restricted cash

		June 30,
		2019			2018
Cash and cash equivalents		$	9,615		$	49,931
Restricted cash (1)			113			113
Total		$	9,728		$	50,044

(1)     Included in other assets in the accompanying condensed consolidated balance sheets

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