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  • Title: Chemotherapy toxicity in gynecologic cancer patients with a body surface area (BSA)>2 m2.
    Author: Schwartz J, Toste B, Dizon DS.
    Journal: Gynecol Oncol; 2009 Jul; 114(1):53-6. PubMed ID: 19359030.
    Abstract:
    OBJECTIVES: Although many clinicians practice empiric dose reduction to prevent toxicity, it is unknown whether obese patients given chemotherapy dosed according to actual body weight (ABW) experience excess toxicity. At our institution, cancer patients receive chemotherapy dosed by ABW unless on a protocol capping doses at a maximum body surface area (BSA). We compared toxicities and dose modifications between women with a BSA>2 m(2) on uncapped versus capped paclitaxel as part of adjuvant paclitaxel/carboplatin for gynecologic malignancy. METHODS: In this retrospective study, women with a BSA>2 m(2) treated with paclitaxel (P) and carboplatin (C) for endometrial and ovarian cancer between January 1999 and July 2007 were identified using the chemotherapy database. Records were reviewed for patient age, BSA, diagnosis, stage, standardized and actual doses for each cycle, adverse drug reactions, and dosing modifications. Statistical comparisons were made using Fisher's exact test. RESULTS: We identified 59 women with BSA>2 m(2) on adjuvant P/C for endometrial and ovarian cancers. 50 received paclitaxel dosed by ABW and 9 received paclitaxel capped at a BSA of 2 m(2). There were no statistically significant differences in rates of toxicity or dose modification. CONCLUSIONS: Obese women with a BSA>2 m(2) on paclitaxel dosed by ABW do not experience excess toxicity in comparison to women on paclitaxel capped at a maximum BSA or women in published trials of adjuvant P/C. Empiric dose reduction is unnecessary and may result in suboptimal treatment of obese patients. However, as this was a retrospective review, more research is needed to make definitive recommendations on this topic.
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