The purpose of this study is to further assess the efficacy and tolerability of a regimen of Brentuximab Vedotin, Etoposide, Cyclophosphamide, Doxorubicin, Dacarbazine, and Dexamethasone (BrECADD) in patients with Stage 2 B-IV Hodgkin Lymphoma (HL) with an exploratory objective to assess the clinical utility of Circulating tumor DNA (ctDNA) as a biomarker for minimal residual disease (MRD) and depth of treatment response.