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Prepaid Expenses and Other Current Assets | 6 Months Ended
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Jun. 30, 2018
Prepaid Expense And Other Assets Current [Abstract] |
Prepaid Expenses and Other Current Assets | 5. Prepaid Expenses and Other Current Assets Prepaid expenses and other current assets consist of the following:
|  | June 30, 2018 |  |  | December 31, 2017 |
Prepaid research and development expenses |  | $ | 3,165 |  |  | $ | 2,289 |
Short-term deposits |  |  | 1,195 |  |  |  | 1,346 |
Other prepaid assets |  |  | 595 |  |  |  | 516 |
Value added tax receivable |  |  | 592 |  |  |  | 281 |
Deferred IPO expenses |  |  | - |  |  |  | 180 |
Research and development tax credit receivable |  |  | 130 |  |  |  | 133 |
Prepaid insurance |  |  | 598 |  |  |  | 117 |
Interest receivable |  |  | 167 |  |  |  | 95 |
Total |  | $ | 6,442 |  |  | $ | 4,957 |

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