**5. Acknowledgment**

We would like to thank Dr. Alex J. Parker and Dr Guy A. Rouleau, from the Centre of Excellence in Neuromics, University of Montreal, Quebec, Canada, for having provided respectively the figure 1 and 2 of this book chapter. We also thank Marie Gingras and Marie-Josée Beaudet for their assistance in generating figure 3 to 5. Dr François Gros-Louis is supported by the Fond de la recherche en santé du Québec (FRSQ) and by the Fondation des hôpitaux Enfant-JésusSt-Sacrement. Dr François Berthod is supported by the Muscular Dystrophy Association USA (www.mda.org). The authors declare no conflict of interest.
