Restricted Cash	9 Months Ended
Sep. 30, 2016
Restricted Cash
Restricted Cash	(9) Restricted Cash As part of the Company’s lease arrangement for its office and laboratory facility in Cambridge, Massachusetts, the Company is required to restrict cash held in a certificate of deposit securing a line of credit for the lessor. As of September 30, 2016 and December 31, 2015, the restricted cash amounted to $311,000 held in certificates of deposit securing a line of credit for the lessor. The lease expires August 2017. As such, this amount is reported in Prepaid expenses and other current assets as of September 30, 2016 and in Restricted cash and other assets as of December 31, 2015.

Restricted Cash

9 Months Ended

Sep. 30, 2016

(9) Restricted Cash

As part of the Company’s lease arrangement for its office and laboratory facility in Cambridge, Massachusetts, the Company is required to restrict cash held in a certificate of deposit securing a line of credit for the lessor. As of September 30, 2016 and December 31, 2015, the restricted cash amounted to $311,000 held in certificates of deposit securing a line of credit for the lessor. The lease expires August 2017. As such, this amount is reported in Prepaid expenses and other current assets as of September 30, 2016 and in Restricted cash and other assets as of December 31, 2015.