In this study we focused our attention on SNAP-25, a gene whose polymorphisms have been shown to be associated with a number of pathologies, including Alzheimer’s and Parkinson’s diseases, schizophrenia, attention deficit hyperactivity disorders and epilepsy; our results indicate that SNAP-25 SNPs also play a role in sarcopenia. The gene discussed is SNAP25; the disease is attention deficit-hyperactivity disorder.