Lowdose Nivolumab in Combination With AVD as Front Line Therapy for Classic Hodgkin's Lymphoma

The main objective of this project is to prove the efficacy and safety of Nivolumab used as an standard dose of 40mg ( as the lowest available presentation) in combination with AVD as frontline therapy for Hodgkin's lymphoma. Patients classification. We will categorize patients in three groups as follows: 1. Early stages by Ann-arbor classification (I,II) with no risk factors (as stablished by NCCN's guidelines criteria). 2. Early stages by Ann.arbor classification (I,II) with risk factors ( as stablished by NCCN's guidelines criteria). 3. Advanced stages by Ann-arbor classification (III,IV). Methodology: - Patients will receive two initial cycles of NAVD therapy ( each with two applications in day 1 and 15) and then will be evaluated with an interim PET/CT after completing cycle 2. - According to the PET C/T results, patients will be categorized as fast responsers (patients who achieve Deauville 1-3 classification) and low responsers ( patients who achieve Deauville 4-5). - Fast responsers will receive following cycles without nivolumab (2 extra cycles for patients categorized as early stage with no risk factors, 4 extra cycles for patients categorized as early stages with risk factors and for advanced stages). - Patients will receive medical evaluation at first meeting, during their treatment and after conclusion of the treatment with physical examination and laboratory tests according to medical criteria. - Adverse effects will be recorded and managed following the guidelines for immunotherapy and chemotherapy indications.