PMID- 16172456 OWN - NLM STAT- MEDLINE DCOM- 20051209 LR - 20231024 IS - 0732-183X (Print) IS - 0732-183X (Linking) VI - 23 IP - 31 DP - 2005 Nov 1 TI - Phase III trial of nanoparticle albumin-bound paclitaxel compared with polyethylated castor oil-based paclitaxel in women with breast cancer. PG - 7794-803 AB - PURPOSE: ABI-007, the first biologically interactive albumin-bound paclitaxel in a nanameter particle, free of solvents, was compared with polyethylated castor oil-based standard paclitaxel in patients with metastatic breast cancer (MBC). This phase III study was performed to confirm preclinical studies demonstrating superior efficacy and reduced toxicity of ABI-007 compared with standard paclitaxel. PATIENTS AND METHODS: Patients were randomly assigned to 3-week cycles of either ABI-007 260 mg/m(2) intravenously without premedication (n = 229) or standard paclitaxel 175 mg/m(2) intravenously with premedication (n = 225). RESULTS: ABI-007 demonstrated significantly higher response rates compared with standard paclitaxel (33% v 19%, respectively; P = .001) and significantly longer time to tumor progression (23.0 v 16.9 weeks, respectively; hazard ratio = 0.75; P = .006). The incidence of grade 4 neutropenia was significantly lower for ABI-007 compared with standard paclitaxel (9% v 22%, respectively; P < .001) despite a 49% higher paclitaxel dose. Febrile neutropenia was uncommon (< 2%), and the incidence did not differ between the two study arms. Grade 3 sensory neuropathy was more common in the ABI-007 arm than in the standard paclitaxel arm (10% v 2%, respectively; P < .001) but was easily managed and improved rapidly (median, 22 days). No hypersensitivity reactions occurred with ABI-007 despite the absence of premedication and shorter administration time. CONCLUSION: ABI-007 demonstrated greater efficacy and a favorable safety profile compared with standard paclitaxel in this patient population. The improved therapeutic index and elimination of corticosteroid premedication required for solvent-based taxanes make the novel albumin-bound paclitaxel ABI-007 an important advance in the treatment of MBC. FAU - Gradishar, William J AU - Gradishar WJ AD - Northwestern University, Breast Oncology, Division of Hematology/Oncology, Department of Medicine, Chicago, IL 60611, USA. w-gradishar@northwestern.edu FAU - Tjulandin, Sergei AU - Tjulandin S FAU - Davidson, Neville AU - Davidson N FAU - Shaw, Heather AU - Shaw H FAU - Desai, Neil AU - Desai N FAU - Bhar, Paul AU - Bhar P FAU - Hawkins, Michael AU - Hawkins M FAU - O'Shaughnessy, Joyce AU - O'Shaughnessy J LA - eng PT - Clinical Trial, Phase III PT - Comparative Study PT - Journal Article PT - Multicenter Study PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20050919 PL - United States TA - J Clin Oncol JT - Journal of clinical oncology : official journal of the American Society of Clinical Oncology JID - 8309333 RN - 0 (Albumin-Bound Paclitaxel) RN - 0 (Albumins) RN - 0 (Antineoplastic Agents, Phytogenic) RN - 61791-12-6 (polyethoxylated castor oil) RN - 8001-79-4 (Castor Oil) RN - P88XT4IS4D (Paclitaxel) SB - IM CIN - J Clin Oncol. 2005 Nov 1;23(31):7768-71. PMID: 16204007 MH - Adult MH - Aged MH - Albumin-Bound Paclitaxel MH - Albumins/adverse effects/therapeutic use MH - Antineoplastic Agents, Phytogenic/adverse effects/*therapeutic use MH - Breast Neoplasms/*drug therapy/mortality/secondary MH - Castor Oil/adverse effects/*analogs & derivatives/therapeutic use MH - Disease-Free Survival MH - Female MH - Humans MH - Infusions, Intravenous MH - Middle Aged MH - Nanostructures MH - Paclitaxel/adverse effects/*therapeutic use MH - Survival Rate MH - Treatment Outcome EDAT- 2005/09/21 09:00 MHDA- 2005/12/13 09:00 CRDT- 2005/09/21 09:00 PHST- 2005/09/21 09:00 [pubmed] PHST- 2005/12/13 09:00 [medline] PHST- 2005/09/21 09:00 [entrez] AID - JCO.2005.04.937 [pii] AID - 10.1200/JCO.2005.04.937 [doi] PST - ppublish SO - J Clin Oncol. 2005 Nov 1;23(31):7794-803. doi: 10.1200/JCO.2005.04.937. Epub 2005 Sep 19.