ETV5 and lung disorder: In contrast, M massiliense pulmonary disease reported high negative sputum conversion rates and radiographic improvement rates after antibiotic therapy[8,10,21,29]; this may be because M abscessus has inducible macrolide resistance, but inducible resistance is not found in M massiliense, which has a partially deleted, nonfunctional erm(41) gene.[16] However, once macrolide-resistant is detected, the expected course of disease changes dramatically.