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Results of combined modality therapy for patients with anal cancer (E7283). An Eastern Cooperative Oncology Group
J A Martenson1, S R Lipsitz, M Lefkopoulou
1Mayo Clinic, Rochester, Minnesota 55905, USA.
Background:
This prospective study assessed combined modality therapy of patients with International Union Against Cancer classification T1-4 N0 M0 anal cancer.
Methods:
Protocol therapy consisted of a dose of 4000 cGy to the pelvis, anus, and perineum, followed by a 1000-1300 cGy boost. Infusions of 5-fluorouracil and mitomycin-C were administered when radiation therapy began. A second infusion of 5-fluorouracil was administered 28 days later. Biopsy was performed 6-8 weeks after completion of treatment. Positive biopsy findings resulted in abdominal-perineal resection.
Results:
Survival at 7 years for 50 eligible patients was 58%. White patients and those with favorable performance status had significantly better survival. Of the 46 patients evaluable for response, 34 had a complete response, 11 had a partial response, and 1 had no response. Seven-year survival for partial responders was 53%. Freedom from locoregional progression was 80% at 7 years.
Conclusion:
Treatment with a combination of chemotherapy and radiation therapy is effective for patients with anal cancer. The investigation of methods of improving therapy is warranted.