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Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Operating expenses:
Research and development	$ 22,387	$ 19,250
General and administrative	6,047	4,279
Total operating expenses	28,434	23,529
Loss from operations	(28,434)	(23,529)
Other income, net	426	62
Loss before provision for income taxes	(28,008)	(23,467)
Provision for income taxes	0	0
Net loss	$ (28,008)	$ (23,467)
Net loss per common share, basic and diluted	$ (0.59)	$ (0.70)
Weighted-average number of common shares used in computing basic net loss per share, basic and diluted	47,343,234	33,466,955

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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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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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