Quarterly report pursuant to Section 13 or 15(d)

Prepaid Expenses and Other Current Assets (Details)

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Prepaid Expenses and Other Current Assets (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Summary of prepaid expenses and other current assets    
Prepaid research & development $ 37
Prepaid expenses 98
Prepaid other 18 10
Total prepaid expenses and other current assets $ 153 $ 10