Annual report pursuant to Section 13 and 15(d)

Accounts Payable and Accrued Expenses (Details)

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Accounts Payable and Accrued Expenses (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Accounts payable $ 3,645 $ 2,473
Accrued compensation 405 291
Research and development 1,466 378
Other 246 213
Accounts payable and accrued expenses - related party 610 318
Total accounts payable and accrued expenses $ 6,372 $ 3,673