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Paclitaxel - carboplatin regimen
Abstract: Phase III Trial of Carboplatin and Paclitaxel Compared With
Cisplatin and Paclitaxel in Patients With Optimally Resected Stage III Ovarian
Cancer: A Gynecologic Oncology Group Study
PURPOSE: In randomized
trials the combination of cisplatin and paclitaxel was superior to cisplatin
and cyclophosphamide in advanced-stage epithelial ovarian cancer. Although
in nonrandomized trials, carboplatin and paclitaxel was a less toxic and
highly active combination regimen, there remained concern regarding its
efficacy in patients with small-volume, resected, stage III disease. Thus,
we conducted a noninferiority trial of cisplatin and paclitaxel versus carboplatin
and paclitaxel in this population. PATIENTS AND METHODS: Patients with advanced
ovarian cancer and no residual mass greater than 1.0 cm after surgery were
randomly assigned to receive cisplatin 75 mg/m2 plus a 24-hour infusion
of paclitaxel 135 mg/m2 (arm I), or carboplatin area under the curve 7.5
intravenously plus paclitaxel 175 mg/m2 over 3 hours (arm II). RESULTS:
Seven hundred ninety-two eligible patients were enrolled onto the study.
Prognostic factors were similar in the two treatment groups. Gastrointestinal,
renal, and metabolic toxicity, as well as grade 4 leukopenia, were significantly
more frequent in arm I. Grade 2 or greater thrombocytopenia was more common
in arm II. Neurologic toxicity was similar in both regimens. Median progression-free
survival and overall survival were 19.4 and 48.7 months, respectively, for
arm I compared with 20.7 and
57.4 months, respectively, for arm II.
The relative risk (RR) of progression for the carboplatin plus paclitaxel
group was 0.88 (95% confidence interval [CI], 0.75 to 1.03) and the RR of
death was 0.84 (95% CI, 0.70 to 1.02). CONCLUSIONS: In patients with advanced
ovarian cancer, a chemotherapy regimen consisting of carboplatin plus paclitaxel
results in less toxicity, is easier to administer, and is not inferior,
when compared with cisplatin plus paclitaxel.
References
Robert F. Ozols, Brian N. Bundy, Benjamin
E. Greer, Jeffrey M. Fowler, Daniel Clarke-Pearson, Robert A. Burger, Robert
S. Mannel, Koen DeGeest, Ellen M. Hartenbach, Rebecca Baergen. Phase III
Trial of Carboplatin and Paclitaxel Compared With Cisplatin and Paclitaxel
in Patients With Optimally Resected Stage III Ovarian Cancer: A Gynecologic
Oncology Group Study. Journal of Clinical Oncology, Vol 21, Issue 17 (September),
2003: 3194-3200.

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| Regimen |
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Paclitaxel....... 175 mg / M2
IV (over 3 h) day 1
followed by
Carboplatin....... AUC 7.5 IV (over 1 h) day 1
FREQUENCY every 21 days. |
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Summary |
Carboplatin
- Paclitaxel vs. Cisplatin - Paclitaxel in Optimally Resected Stage
III Ovarian Cancer |
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Progression
Free Survival |
20.7m vs. 19.4m |
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Overall Survival |
57.4m vs. 48.7m |
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Toxicity |
Toxicity
was similar but thrombocytopenia was more common in the carboplatin
arm |
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