Liposomal Amikacin for Inhalation (LAI) in the Treatment of Mycobacterium Abscessus Lung Disease

This is an open-label study of efficacy, safety and tolerability of once daily dosing of Liposomal-Amikacin for Inhalation (LAI), in addition to a standard multi-drug antibiotic therapy in accordance with the 2007 ATS/ IDSA guidelines, in patients with Mycobacterium abscessus lung disease. The multi-drug therapy is determined at the discretion of the Investigator. After screening, all eligible patients will enter the trial and will receive LAI 590 mg once daily for 12 months. If deemed necessary by the investigator, dose may be adjusted from a minimum of three times per week up to daily, in cases of adverse events relating to tolerability. All patients who enter the study will have subsequent study visits at Months 1,2,4,6,9, at End-of-Study or Month 12, and at 1 and 3 months post study drug discontinuation. At each visit (including screening), review of concomitant medications, review of adverse events, and physical exam, will be performed. Chest CT scan will be performed at baseline, 6 months, and 12 months, unless a chest CT scan has already been performed within 6 months on this time point. The 6 minute walk test and QOL-B-NTM will be performed at baseline, 6 months, 12 months, and 3 months post study drug discontinuation. All patients will have inducted sputum collected at each study visit, and patients will self-collect expectorated sputum during intervening monthly time-points until study completion to determine changes in mycobacterial smear and culture status. Unscheduled visits will occur as needed should subjects' symptoms worsen between visits.