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Accrued Expenses and Other Current Liabilities (Tables) | 9 Months Ended
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Sep. 30, 2015
Payables and Accruals [Abstract] |
Schedule of Accrued Expenses and Other Current Liabilities | Accrued expenses and other current liabilities consist of the following (in thousands):
| September 30, 2015 |  | December 31, 2014
Clinical trial costs | $ | 5,179 |  |  | $ | 6,967 |
Compensation and related benefits | 992 |  |  | 1,040 |
Professional fees | 1,121 |  |  | 821 |
Interest expense | 37 |  |  | 57 |
Accrued expenses and other current liabilities | $ | 7,329 |  |  | $ | 8,885 |

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