RT Journal Article SR Electronic T1 A randomized, open-label, multicenter study of liposomal amikacin for inhalation in adult patients with nontuberculous mycobacteria (NTM) lung infections caused by mycobacterium avium complex (MAC) JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP PA3945 DO 10.1183/13993003.congress-2015.PA3945 VO 46 IS suppl 59 A1 David Griffith A1 Patrick Flume A1 Kevin Winthrop A1 Rachel Thomson A1 Dirk Wagner A1 Jakko Van Ingen A1 Liza Micioni A1 John P. McGinnis II A1 Carlos Fernandez A1 Gina Eagle YR 2015 UL http://erj.ersjournals.com/content/46/suppl_59/PA3945.abstract AB Mycobacterium avium: complex (MAC) lung infections are associated with significant morbidity and mortality. Treatment of NTM lung infection is complicated by lengthy multidrug regimens often associated with drug toxicity and suboptimal outcomes. Liposomal amikacin for inhalation (LAI) is a novel inhaled amikacin formulation in development for the treatment of MAC lung infections. In an initial placebo-controlled study of patients with treatment-refractory NTM lung infections, which studied both MAC and M abscessus, (TR02-112), those who had LAI added to their multidrug regimen produced more negative sputum cultures at Day 84 than those on placebo (25.0% vs 6.7%; P=.01).Study INS-212 will evaluate this further by assessing culture conversion (3 consecutive negative sputum cultures) with longer-term LAI treatment added to multidrug regimens.Up to 351 adults ≥18 years with treatment-refractory MAC lung infection (≥2 positive sputum cultures while on a multidrug regimen for ≥6 months) will be stratified by smoking status and multidrug regimen use, and randomized 2:1 to LAI 590 mg QD added to a multidrug regimen or continued on a multidrug regimen alone.The primary endpoint is the proportion of subjects achieving culture conversion by Month 6. Other endpoints include the 6-minute walk test, patient-reported outcomes, and QOL scores.Converters will continue in the study for 12 months from their first negative culture used to define culture conversion. Subjects exiting study for any reason will be contacted for safety follow-up at Month 12.