- Patients who have neuromuscular disorder (e.g. inflammatory myopathies, muscular dystrophy, amyotrophic lateral sclerosis and spinal muscular atrophy) or are on concomitant treatment with drugs that are recognized to cause rhabdomyolysis, such as HMG CoA inhibitors (statins), clofibrate and gemfibrozil, and the cannot be discontinued at least 2 weeks prior to starting sonidegib treatment. If it is essential that the patient remain on a statin to control hyperlididemia, only pravastatin may be used with extra caution