The Efficacy of Low-Dose Paclitaxel Added to Combination Chemotherapy of Carboplatin and Gemcitabine or Pegylated Liposomal Doxorubicin.
International journal of gynecological cancer : official journal of the International Gynecological Cancer Society(2016)
Abstract
OBJECTIVE:Paclitaxel is known to produce the "platelet-sparing effect" that prevents the carboplatin-induced decrease in platelet count. We conducted a pilot study to assess whether the addition of low-dose paclitaxel to carboplatin-based combination chemotherapy prevents thrombocytopenia.
METHODS:Patients with platinum-sensitive recurrent ovarian cancer received intravenous (IV) paclitaxel at 60 mg/m(2) followed by IV carboplatin at an area under the curve of 6 and IV pegylated liposomal doxorubicin at 30 mg/m(2) on day 1 in a 28-day cycle (DC-LOP) or IV gemcitabine at 1000 mg/m(2) on days 1 and 8 in a 21-day cycle (GC-LOP).
RESULTS:During May 2011 to December 2011, 7 patients received 29 cycles of DC-LOP; during January 2012 to May 2013, 15 patients received 88 cycles of GC-LOP. Grade 3/4 thrombocytopenia occurred in 2 (33%) of 6 and 9 (56%) of 16 patients in the DC-LOP and GC-LOP groups, respectively. No grade 3/4 nonhematological toxicity was observed. Only one patient who received GC-LOP had grade 2 sensory and motor peripheral neuropathy. Paclitaxel-related toxicities, including muscle pain, arthralgia, and peripheral neuropathy, were consistently rare and mild. The response rates of DC-LOP and GC-LOP were 33% (0, complete response; 2, partial response; 3, stable disease; 1, progression disease) and 50% (2, complete response; 6, partial response; 7, stable disease; 1, progression disease), respectively.
CONCLUSIONS:Although low-dose paclitaxel addition did not alleviate thrombocytopenia in the setting of this pilot study, the results do not deny the existence of the "platelet-sparing effect" by low-dose paclitaxel. Further investigation of the carboplatin-based combination chemotherapy including a drug with mild hematological toxicity is warranted.
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