Quarterly report pursuant to Section 13 or 15(d)

Supplemental Disclosure for Statements of Cash Flows

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Supplemental Disclosure for Statements of Cash Flows
6 Months Ended
Jun. 30, 2015
Supplemental Cash Flow Elements [Abstract]  
Supplemental Disclosure for Statements of Cash Flows
Supplemental Disclosure for Statements of Cash Flows

During the six-month periods ended June 30, 2015 and 2014, we paid interest aggregating $2.0 million and $1.4 million, respectively. During the six-month periods ended June 30, 2015 and 2014, we recorded $1.0 million and $2.4 million, respectively, of end-of-term fees associated with our notes payable to CRG and Oxford.

In connection with their initial investment in March 2015, the investors in MT were issued warrants that have been determined to be derivative liabilities with an estimated fair value of $63,000. A $46,000 deemed dividend related to the beneficial conversion feature within the MT Preferred Stock was also recorded at the time of the initial investment in MT.