September 7th marks World Duchenne Awareness Day. It’s on 7/9 in recognition of the 79 exons on the Dystrophin gene, the largest protein coding gene in the entire human genome. A small mutation in just one of these mutations is all it takes to cause Duchenne. Duchenne is the largest genetic killer of children, yet remains largely unheard of. It affects 1 in 3,600 boys, with just 1 in 50,000,000 girls being affected to the same extent.