Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2020

Summary of Significant Accounting Policies

Schedule of stock-based compensation expense

During the three and nine months ended September 30, 2020 and 2019, the Company recorded stock-based compensation expense, which was allocated as follows in the condensed consolidated statements of operations (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
Research and development	$	154	$	162	$	491	$	462
General and administrative		221		216		593		765
Total	$	375	$	378	$	1,084	$	1,227

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

	Three and Nine Months Ended September 30,
	2020	2019
Stock options	1,336,262	843,183
Common stock warrants	6,193,749	6,193,749
	7,530,011	7,036,932

Schedule of reconciliation of cash, cash equivalents and restricted cash

	September 30,
	2020		2019
Cash and cash equivalents	$	52,856	$	17,765
Restricted cash (1)		235		113
Total	$	53,091	$	17,878

(1) Included in prepaid expenses and other current assets and other assets.