On March 21, 2024, the U.S. Food and Drug Administration (FDA) approved Duvyzat™ (givinostat), the first nonsteroidal medication for the treatment of Duchenne Muscular Dystrophy (DMD) in patients 6 years and older. DMD is the most common form of childhood muscular dystrophy, a group of progressive, degenerative diseases affecting the skeletal muscles. DMD primarily affects males, and symptoms appear during toddler years. DMD is characterized by deterioration of muscle fibers, and patients experience progressive weakness along with reduction in muscle strength and size. Typically, the upper legs and pelvis are affected first, followed by the upper arms. This may affect gait, increase frequency of falls and lead to difficulty ambulating. As the disease progresses, muscles of the diaphragm may be affected, leading to difficulty breathing, swallowing issues and heart problems. Duvyzat™ is an oral medication that targets the degenerative effects of DMD, helping to reduce inflammation and loss of muscle. The change in physical function and the speed of climbing four stairs was compared in those receiving Duvyzat™ with a standard-of-care steroid regimen and those receiving placebo with steroid regimen. Patients receiving Duvyzat™ showed less worsening of physical function and a faster speed of climbing four stairs at 18 months compared to patients receiving placebo. The most common side effects included diarrhea, nausea, vomiting, abdominal pain, elevated triglycerides and decreased number of platelets (increasing bleeding risk). Duvyzat™ was granted priority review, fast track, orphan drug, and rare pediatric disease designations.