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Related Party Transactions	9 Months Ended
	Sep. 30, 2017
Related Party Transactions
Related Party Transactions	9. Related Party Transactions During the three and nine months ended September 30, 2016, the Company reimbursed an entity related to one of its stockholders for shared office space and office related expenses. The total amount charged to the Company was approximately $86 and $213 in the three and nine months ended September 30, 2016, respectively.  Effective January 1, 2017, the Company entered into an assignment agreement to assume the operating lease for its office space in Cambridge, Massachusetts, and accordingly, the Company was not required to reimburse the related party during the three and nine months ended September 30, 2017. During the three and nine months ended September 30, 2016 and the nine months ended September 30, 2017, the Company executed promissory notes with stockholders (See Note 5). The Company has a license agreement with a stockholder (See Note 8).

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- Definition

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
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-Subparagraph (SX 210.4-08(k))
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