P1088: UPDATED DATA FROM A PHASE 1/2 STUDY OF BRENTUXIMAB VEDOTIN COMBINED WITH CHEMOTHERAPY IN PEDIATRIC PATIENTS WITH ADVANCED STAGE CLASSICAL HODGKIN LYMPHOMA - F. Locatelli; F. Luisi; M. Pianovski; M. A. Salvino; F. Fagioli; S. Epelman; L. Britto De Abreu Lima; R. Norris; V. Odone Filho; M. Zecca; C. Favre; R. Kobayashi; et al. (HemaSphere, 2022)