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Condensed Statements of Comprehensive Loss - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Operating expenses: |  |  |  |
General and administrative | $ 1,051 | $ 658 | $ 2,101 | $ 1,133
Research and development | 789 | 952 | 1,965 | 1,158
Acquired in-process research and development |  |  |  | 908
Total operating expenses | 1,840 | 1,610 | 4,066 | 3,199
Loss from operations | (1,840) | (1,610) | (4,066) | (3,199)
Interest income (expense) | 449 |  | 576 | (690)
Other expense |  | (1) | (4) | (1)
Net loss | (1,391) | (1,611) | (3,494) | (3,890)
Comprehensive loss | (1,391) | (1,611) | (3,494) | (3,890)
Net loss | (1,391) | (1,611) | (3,494) | (3,890)
Adjustment to redemption value on Series A convertible preferred stock | (150) | (149) | (299) | (2,666)
Net loss attributable to common stockholders | $ (1,541) | $ (1,760) | $ (3,793) | $ (6,556)
Net loss per share: |  |  |  |
Basic and diluted (Note 10) | $ (0.42) | $ (0.60) | $ (1.07) | $ (2.59)
Number of shares used in per share calculations: |  |  |  |
Basic and diluted | 3,626,825 | 2,952,578 | 3,547,795 | 2,533,665

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