CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Expenses:
Research and development	$ 11,572	$ 9,148	$ 30,454	$ 20,307
General and administrative	2,327	2,073	8,496	6,599
Loss from operations	(13,899)	(11,221)	(38,950)	(26,906)
Interest income	93	111	280	292
Other expense			(42)
Net loss	$ (13,806)	$ (11,110)	$ (38,712)	$ (26,614)
Per share information:
Net loss per share of common stock-basic and diluted (in dollars per share)	$ (0.26)	$ (0.27)	$ (0.74)	$ (0.66)
Basic and diluted weighted average shares outstanding (in shares)	52,543,539	40,407,146	52,510,610	40,392,084
Net loss	$ (13,806)	$ (11,110)	$ (38,712)	$ (26,614)
Other comprehensive income (loss):
Unrealized gain on available-for-sale securities	1	42	1	68
Total comprehensive loss	$ (13,805)	$ (11,068)	$ (38,711)	$ (26,546)

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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