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Related-Party Transactions | 3 Months Ended
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Mar. 31, 2018
Related Party Transactions [Abstract] |
Related-Party Transactions | Related-Party Transactions Since its inception in 2011, the Company has shared facilities, certain staff members and certain operating expenses with AuraSense, LLC, our former parent and largest stockholder. On an infrequent basis, the Company also pays certain expenses directly on behalf of AuraSense, LLC which are related to AuraSense, LLC’s grants, and AuraSense, LLC sometimes pays expenses directly on behalf of the Company. These costs are summarized and directly billed between the Company and AuraSense, LLC on a quarterly basis. In addition, certain expense and administrative activities are shared between the Company and AuraSense, LLC. Effective January 1, 2016, the Company and AuraSense, LLC amended its shared services agreement to simplify the billing arrangement. Under the amended shared services agreement, the Company bills AuraSense, LLC $8 per quarter for indirect costs incurred by the Company plus a specified rate for hours worked by Company scientists on projects directly related to AuraSense, LLC. The amended shared services arrangement continues to require direct non-labor expenses incurred by the Company to be billed to AuraSense, LLC. Effective January 1, 2017, the Company and AuraSense, LLC further amended its shared services agreement so that the quarterly fee related to administrative activities billed by the Company to AuraSense, LLC be reduced to $3 per quarter. This decrease is to reflect the current and expected future reduction in administrative activities to be provided by the Company to AuraSense, LLC. The amounts due from AuraSense, LLC in connection with the above mentioned activities were $21 and $17 at March 31, 2018 and December 31, 2017, respectively. The following is a summary of amounts billed to AuraSense, LLC and recognized in the accompanying unaudited statement of operations in connection with the above mentioned activities:
| For the Three Months Ended March 31,
| 2018 |  | 2017
Quarterly fee for indirect costs | $ | 3 |  |  | $ | 3 |
Direct costs of AuraSense LLC paid by the Company | 1 |  |  | 2 |
| $ | 4 |  |  | $ | 5 |
The Company received consulting services from, and paid fees to, one of its co-founders who is not an employee but serves as a member of the Board. The Company paid $25 in each of the three months ended March 31, 2018 and 2017 in connection with these consulting services and these amounts are recognized as an expense in the accompanying unaudited consolidated statement of operations.

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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 850 -URI http://asc.fasb.org/topic&trid=2122745 + Details
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