The goal of this clinical trial is to learn if Atorvastatin 80 mg is effective to avoid functional right ventricular deterioration in patients affected by Arrhythmogenic Cardiomyopathy. It will also learn about the safety of Atorvastatin 80 mg in this type of patients. The main questions it aims to answer are: 1. Does Atorvastatin 80 mg prevent worstening of the right ventricular functioning? 2. Does Atorvastatin 80 mg prevent the worsening of electric, morphological and biomarkers deterioration? 3. What medical problems do participants have when taking Atorvastatin 80 mg? Researchers will compare Atorvastatin 80 mg to a placebo (a look-alike substance that contains no drug) to see if the drug works to treat Arrhythmogenic Cardiomyopathy. Participants will: 1. Take Atorvastatin 80 mg or a placebo every day for 18 months; 2. Visit the clinic at the enrollment and after 2, 4, 9 and 18 months for checkups and tests; 3. Make a phone call for safety check after 12, 15 and 19 months since the enrollment; 4. Fill out psychological questionnaires