Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Operating expenses
Research and development	$ 2,989	$ 1,097
General and administrative	1,886	1,698
Total operating expenses	4,875	2,795
Loss from operations	(4,875)	(2,795)
Other income (expense), net	(6)	(11)
Net loss and comprehensive loss	$ (4,881)	$ (2,806)
Net loss per share, basic and diluted	$ (0.52)	$ (0.36)
Weighted-average common shares outstanding, basic and diluted	9,427,073	7,749,263

The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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