Survival analysis based on individual gene mutations revealed that mutations in lysine Methyltransferase 2 C (KMT2 C), dystrophin (DMD), and midasin AAA ATPase 1 (MDN1) were associated with poor survival in C1, C2, and C3, respectively (Fig. 2D). This evidence concerns the gene MDN1 and Duchenne muscular dystrophy.