Results of a prospective randomized clinical trial of doxorubicin, bleomycin, vinblastine, and dacarbazine (ABVD) followed by radiation therapy (RT) versus ABVD alone for stages I, II, and IIIA nonbulky Hodgkin disease

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Abstract
To determine whether combined modality therapy (CMT) is superior to chemotherapy (CT) alone, 152 untreated Hodgkin disease patients with clinical stages (CSs) IA, IB, IIA, IIB, and IIIA without bulk disease were prospectively randomized to 6 cycles of doxorubicin, bleomycin, vinblastine, dacarbazine (ABVD) alone or 6 cycles of ABVD followed by radiation therapy (RT) (3600 cGy: involved field for 11 patients, modified extended field for the rest). Of 76 patients randomized to receive RT, 65 actually received it, and 11 did not (4 progressed, 1 had bleomycin toxicity, 6 refused). For ABVD + RT, the complete remission (CR) percentage was 94% and no major response, 6%. For ABVD alone, 94% achieved a CR; 1.5%, a partial response (PR); and 4.5%, no major response. At 60 months CR duration, freedom from progression (FFP), and overall survival (OS) for ABVD + RT versus ABVD alone are 91% versus 87% (P = .61), 86% versus 81% (P = .61), and 97% versus 90% (P = .08), respectively (log-rank). The 95% confidence intervals for CR duration, FFP, and OS differences at 5 years were –8% to 15%, –8% to 18%, and –4% to 12%, respectively. Although significant differences were not seen, it is possible that a benefit in outcome of less than 20% for CMT might be seen in a larger trial.