Cell Signaling, Reinnervation and Metabolism in Kennedy Disease and Amyotrophic Lateral Sclerosis (ALS)

A motor point biopsy of deltoid muscle will be carried out at the time of inclusion using a standardized procedure, as routinely performed. Muscle samples will be removed from the deltoid muscle by open biopsy under local anaesthesia. The region containing NMJs will be determined by the small twitch provoked by the tip of the scalpel on the surface of the muscle fascicles.