Prepaid Expenses and Other Current Assets

6 Months Ended

Jun. 30, 2015

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Prepaid Expenses and Other Current Assets

4. Prepaid expenses and other current assets

As of June 30, 2015, prepaid expenses and other current assets were $590, consisting of $423 of prepaid insurance, $51 of prepaid offering costs, $35 of prepaid research and development (“R&D”) clinical costs and $81 of other costs. As of December 31, 2014, prepaid expenses and other current assets were $287, consisting of $92 of prepaid insurance, $177 of prepaid R&D clinical costs and $18 of other costs.