Healthcare Resource Utilization in Refractory MACLD: Comparison of an Amikacin Liposome Inhalation Suspension (ALIS) Cohort with a Non-ALIS Cohort

Abstract

Introduction: Add-on treatment with amikacin liposome inhalation suspension (ALIS) to a multidrug antibiotic regimen is the only US Food and Drug Administration-approved treatment for adults with refractory Mycobacterium avium complex lung disease (MACLD). In real-world settings, other antibiotics may be added on to treat refractory MACLD. We analyzed healthcare resource utilization in a US patient population who received add-on treatment for refractory MACLD. Methods: This was a retrospective claims analysis using Merative™ MarketScan® databases (January 2016 to December 2022). Two patient cohorts were defined: an ALIS and non-ALIS cohort. Index date was date of first prescription with ALIS or non-ALIS antibiotic for refractory MACLD. Hospitalizations (all-cause, respiratory-related, nontuberculous mycobacteria (NTM)-related) and emergency room (ER) visits at 0–6-month and 7–12-month post-index periods were compared with baseline (6-month pre-index period) per cohort. Multivariate logistic regression models compared the odds of hospitalizations or ER visits between cohorts. Results: The ALIS and non-ALIS cohorts comprised 116 and 63 patients, respectively. The most common add-on treatments for refractory MACLD in the non-ALIS cohort were parenteral amikacin (41.3%) and moxifloxacin (27.0%). In the ALIS cohort, significant reductions from baseline, as compared with the 7–12-month post-index period, were observed in all-cause (12.1% vs 22.4%), respiratory-related (8.6% vs 20.7%), and NTM-related hospitalizations (9.5% vs 19.8%) (P < 0.05 for all comparisons). There were no significant changes from baseline in hospitalizations at follow-up in the non-ALIS cohort. No significant changes from baseline in ER visits or hospital length of stay were observed in either cohort. Adjusted odds ratios (ORs) of all-cause (OR [95% confidence interval, CI] 0.45 [0.21–0.96]) and respiratory-related hospitalizations (OR 0.44 [0.21–0.96]) were statistically significantly lower in the ALIS cohort compared with the non-ALIS cohort. Conclusions: Add-on treatment with ALIS in refractory MACLD may lead to reductions in hospitalizations over time and lower odds of hospitalizations compared with add-on treatment with non-ALIS antibiotics.