These non-GAAP measures are intended to provide additional information on Horizon Pharma's performance, operations, expenses, profitability and cash flows. Adjustments to Horizon Pharma's GAAP figures as well as EBITDA exclude acquisition-related expenses, charges related to the discontinuation of ACTIMMUNE development for Friedreich's ataxia, gain from divestiture, an upfront fee for a license of a patent, a litigation settlement, loss on debt extinguishment, loss on sale of long-term investments, costs of debt refinancing, drug manufacturing harmonization costs, as well as non-cash items such as share-based compensation, depreciation and amortization, royalty accretion, non-cash interest expense, intangible and other non-current asset impairment charges, and other non-cash adjustments. Certain other special items or substantive events may also be included in the non-GAAP adjustments periodically when their magnitude is significant within the periods incurred.