Gliadel® wafer in initial surgery for malignant glioma:: long-term follow-up of a multicenter controlled trial
Gliadel® wafer in initial surgery for malignant glioma:: long-term follow-up of a multicenter controlled trial
复制标题
DOI:
10.1007/s00701-005-0707-z
复制
发表时间:
2006-03-01
影响因子:
2.4
通讯作者:
Bortey, E
中科院分区:
文献类型:
--
作者:
Westphal, M;Ram, Z;Bortey, E
Objective. Adjuvant systemic chemotherapy increases survival of primary malignant glioma patients beyond 12-18 months. The only interstitial chemotherapy treatment approved for malignant glioma is Gliadel((R)) wafer containing carmustine (BCNU) placed in the resection cavity at surgery. Analysis of a large trial by Westphal and colleagues (n = 240) showed a 29% risk reduction (P = 0.03) in the BCNU wafer-treated group over the course of the 30-month trial. Long-term follow-up of these patients was undertaken to determine the survival benefit at 2 and 3 years.Methods. Survival proportions for the placebo and treatment groups over the 56-month study were estimated by the Kaplan-Meier method. Multiple-regression analyses using the Cox proportional hazards model included prognostic factors of age, KPS, and tumor type. A secondary analysis was conducted for 207 GBM patients.Results. Of the 59 patients available for long-term follow-up, 11 were alive at 56 months: 9 had received BCNU wafers and 2 had received placebo wafers. Median survival of patients treated with BCNU wafers was 13.8 months vs 11.6 months in placebo-treated patients (P = 0.017) with a hazard ratio of 0.73 (P = 0.018), representing a 27% significant risk reduction. This survival advantage was maintained at 1, 2, and 3 years and was statistically significant (P = 0.01) at 3 years. Two of 207 GBM patients remained alive at the end of the follow-up period, both in the BCNU wafer-treated group.Conclusion. Malignant glioma patients treated with BCNU wafers at the time of initial surgery in combination with radiation therapy demonstrated a survival advantage at 2 and 3 years follow-up compared with placebo.