We are the largest patient volume autoimmune disease HSCT private treatment center in the world. Doctor Ruiz Argüelles and Doctor Gómez-Almaguer have performed more than 3,000 HSCT procedures during more than 20 years for hematological and autoimmune diseases, out of which over 1500 have been for MS. Our transplant related mortality is less than 0.26%, among the safest treatment records in the world. Positive results have been achieved in over 78% of patients transplanted at Clinica Ruiz, which includes both relapsing and progressive patients.