# Arikayce Posts 21% Greater Symptom Improvement in First-Line MAC Lung Trial - Date: 2026-03-23 - Category: Biotech & Life Sciences Insmed's Arikayce Clears Phase 3 in First-Line MAC Lung Disease, Setting Up a Second Blockbuster Insmed announced [positive topline results](https://investor.insmed.com/2026-03-23-Insmed-Announces-Positive-Topline-Results-from-Phase-3b-ENCORE-Study-of-ARIKAYCE-R-Amikacin-Liposome-Inhalation-Susp... ---