Radiation Therapy Oncology Group 9802: Controversy or Consensus in the Treatment of Newly Diagnosed Low-Grade Glioma?

被引:19
|
作者
Laack, Nadia N. [1 ]
Sarkaria, Jann N. [1 ]
Buckner, Jan C. [2 ]
机构
[1] Mayo Clin, Dept Radiat Oncol, Rochester, MN 55905 USA
[2] Mayo Clin, Dept Oncol, Rochester, MN USA
关键词
PHASE-II TRIAL; TERM-FOLLOW-UP; RANDOMIZED-TRIAL; ANAPLASTIC OLIGODENDROGLIOMAS; VINCRISTINE CHEMOTHERAPY; CONCURRENT TEMOZOLOMIDE; EUROPEAN-ORGANIZATION; PROGNOSTIC-FACTORS; RADIOTHERAPY; ADULTS;
D O I
10.1016/j.semradonc.2015.02.004
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Treatment of newly diagnosed or suspected low-grade glioma (LGG) is one of the most controversial areas in neuro-oncology. The heterogeneity of these tumors, concern regarding morbidity of treatment, and absence of proven overall survival benefit from any known treatment have resulted in a lack of consensus regarding the timing and extent of surgery, timing of radiotherapy (RT), and role of chemotherapy. The long-term results of Radiation Therapy Oncology Group (RTOG) 9802, a phase Ill randomized trial comparing RT alone with RT and 6 cycles of adjuvant procarbazine, CCNU, vincristine (PCV), demonstrated an unprecedented 5.5-year improvement in median overall survival with the addition of PCV chemotherapy in high-risk patients with LGG. These results are practice changing and define a new standard of care for these patients. However, in the intervening decade since the trial was completed, novel molecular markers as well as newer chemotherapy agents such as temozolomide have been developed, which make these results difficult to incorporate into clinical practice. This review summarizes the evidence for and against the role of upfront RT and PCV in newly diagnosed patients with LGG. (C) 2015 Elsevier Inc. All rights reserved.
引用
收藏
页码:197 / 202
页数:6
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