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Randomized Controlled Trial
. 2012 Dec 15;59(7):1259-65.
doi: 10.1002/pbc.24279. Epub 2012 Aug 21.

Response-dependent and reduced treatment in lower risk Hodgkin lymphoma in children and adolescents, results of P9426: a report from the Children's Oncology Group

Cameron K Tebbi  1 , Nancy P Mendenhall, Wendy B London, Jonathan L Williams, Robert E Hutchison, Thomas J Fitzgerald, Pedro A de Alarcón, Cindy Schwartz, Allen Chauvenet
Affiliations
Randomized Controlled Trial

Response-dependent and reduced treatment in lower risk Hodgkin lymphoma in children and adolescents, results of P9426: a report from the Children's Oncology Group

Cameron K Tebbi et al. Pediatr Blood Cancer. .

Abstract

Background: Hodgkin lymphoma is highly curable but associated with significant late effects. Reduction of total treatment would be anticipated to reduce late effects. This aim of this study was to demonstrate that a reduction in treatment was possible without compromising survival outcomes.

Methods: Protocol P9426, a response-dependent and reduced treatment for low risk Hodgkin lymphoma (stages I, IIA, and IIIA(1) ) was designed in 1994 based on a previous pilot project. Patients were enrolled from October 15, 1996 to September 19, 2000. Patients were randomized to receive or not receive dexrazoxane and received two cycles of chemotherapy consisting of doxorubicin, bleomycin, vincristine, and etoposide. After two cycles, patients were evaluated for response. Those in complete response (CR) received 2,550 cGy of involved field radiation therapy (IFRT). Patient with partial response or stable disease, received two more cycles of chemotherapy and IFRT at 2,550 cGy.

Results: There were 294 patients enrolled, with 255 eligible for analysis. The 8-year event free survival (EFS) between the dexrazoxane randomized groups did not differ (EFS 86.8 ± 3.1% with DRZ, and 85.7 ± 3.3% without DRZ (P = 0.70). Forty-five percent of patients demonstrated CR after two cycles of chemotherapy. There was no difference in EFS by histology, rapidity of response, or number of cycles of chemotherapy. Six of the eight secondary malignancies in this study have been previously reported.

Conclusions: Despite reduced therapy and exclusion of most patients with lymphocyte predominant histology, EFS and overall survival are similar to other reported studies. The protocol documents that it is safe and effective to reduce therapy in low-risk Hodgkin lymphoma based on early response to chemotherapy with rapid responding patients having the same outcome as slower-responding patients when given 50% of the chemotherapy.

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Conflict of interest statement

Conflict of Interest: The authors have nothing to declare

Figures

Figure 1
Figure 1. Treatment schema
Figure 2
Figure 2. Overall and event-free survival
See this image and copyright information in PMC

References

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