Exhibit 12.1

RATIO OF EARNINGS/ DEFICIENCY TO FIXED CHARGES

The following table sets forth, for each of the periods presented, our ratio of earnings to fixed charges and our coverage deficiency. You should read this table in conjunction with the financial statements and notes incorporated by reference in this prospectus.

(in thousands)	Nine Months Ended September 30, 2014		Year Ended December 31, 2013		Year Ended December 31, 2012		Year Ended December 31, 2011
Net loss	36,985		20,478		26,183		889
Ratio of earnings to fixed charges(1)	N/A		N/A		N/A		N/A
Coverage deficiency	(36,985	)	(20,478	)	(26,183	)	(889	)

(1) We did not record earnings for the nine months ended September 30, 2014, and for the years ended December 31, 2013, 2012 and 2011. Accordingly, our earnings were insufficient to cover fixed charges for such periods and we are unable to disclose a ratio of earnings to fixed charges for such periods.