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Originally published as JCO Early Release 10.1200/JCO.2008.18.9548 on February 17 2009 © 2009 American Society of Clinical Oncology. Phase II Evaluation of Nanoparticle Albumin–Bound Paclitaxel in Platinum-Sensitive Patients With Recurrent Ovarian, Peritoneal, or Fallopian Tube CancerFrom US Oncology Research, Houston; Texas Oncology, Austin; Northwest; Texas Oncology, Waco; Texas Oncology, Fort Worth, TX; and Gynecologic Oncology, Portland, OR. Corresponding author: Michael G. Teneriello, MD, Texas Oncology, 6204 Balcones Dr, Austin, TX 78731; e-mail: michael.teneriello{at}usoncology.com. Purpose Patients with recurrent ovarian, peritoneal, or fallopian tube cancer have limited therapeutic options. There are no reports of nanoparticle albumin–bound paclitaxel (nab-paclitaxel) in patients with recurrent platinum-sensitive disease. We report efficacy and toxicity with nab-paclitaxel in this group. Patients and Methods Forty-seven patients enrolled (44 assessable patients). Main inclusion criteria were histologically or cytologically confirmed epithelial cancer of the ovary, fallopian tube, or peritoneum (any stage, grade 2 to 3 if stage I) and measurable disease according to Response Evaluation Criteria in Solid Tumors (RECIST) or elevated CA-125 (> 70 U/mL) in patients without measurable disease. Patients received nab-paclitaxel 260 mg/m2 administered intravenously for 30 minutes on day 1 of a 21-day cycle for six cycles or until disease progression. Results Median age was 65.5 years; 76% of patients had stage IIIC or IV disease, 81% had Eastern Cooperative Oncology Group performance status of 0, and 94% had prior surgery. For assessable patients, the objective response rate (ORR) was 64% (15 complete responses [CR] and 13 partial responses [PR] among 44 assessable patients). In patients evaluated with RECIST only, the ORR was 45% (one CR and four PR of 11 patients). In patients with only elevated CA-125, ORR was 82% (seven CRs and two PRs of 11 patients). In patients meeting both RECIST and CA-125 criteria, the ORR was 64% (seven CRs and seven PRs of 22 patients). Median time to response was 1.3 months (range, 0.5 to 4.8 months). Estimated median progression-free survival was 8.5 months. The most frequent grade 3 to 4 treatment-related toxicities were neutropenia (24%) and neuropathy (9%). Conclusion Nab-paclitaxel is active in this group of patients with recurrent ovarian, peritoneal, or fallopian tube cancer. The ORR was 64%. Toxicities were manageable. Further studies of nab-paclitaxel in combination with platinum are warranted. Supported in part from a research grant from Abraxis BioScience Inc, Santa Monica, CA. Authors' disclosures of potential conflicts of interest and author contributions are found at the end of this article.
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Copyright © 2009 by the American Society of Clinical Oncology, Online ISSN: 1527-7755. Print ISSN: 0732-183X
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