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- W4361961370 abstract "<div>Abstract<p><b>Purpose:</b> CXCR4 plays an important role in the retention of stem cells within the bone marrow. BKT140 (4F-benzoyl-TN14003) is a 14-residue bio stable synthetic peptide, which binds CXCR4 with a greater affinity compared with plerixafor (4 vs. 84 nmol/L). Studies in mice demonstrated the efficient and superior mobilization and transplantation of stem cells collected with GCSF-BKT140, compared with those obtained when using stem cells obtained with each one of these mobilizing agent alone. These results have served as a platform for the present clinical phase I study.</p><p><b>Experimental Design:</b> Eighteen patients with multiple myeloma who were preparing for their first autologous stem cell transplantation were included. Patients received a standard multiple myeloma mobilization regimen, consisting of 3 to 4 g/m<sup>2</sup> cyclophosphamide (day 0), followed by granulocyte colony—stimulating factor (G-CSF) at 5 μg/kg/d starting on day 5 and administered between 8 and 10 pm until the end of stem cell collection. A single injection of BKT140 (0.006, 0.03, 0.1, 0.3, and 0.9 mg/kg) was administered subcutaneously on day 10 in the early morning, followed by G-CSF 12 hours later.</p><p><b>Results:</b> BKT140 was well tolerated at all concentrations, and none of the patients developed grade 3 and 4 toxicity. A single administration of BKT140 at the highest dose, 0.9 mg/kg, resulted in a robust mobilization and collection of CD34<sup>+</sup> cells (20.6 ± 6.9 × 10<sup>6</sup>/kg), which were obtained through a single apheresis. All transplanted patients received ∼5.3 × 10<sup>6</sup> CD34<sup>+</sup> cells/kg, which rapidly engrafted (<i>n</i> = 17). The median time to neutrophil and platelet recovery was 12 and 14 days, respectively, at the highest dose (0.9 mg/kg).</p><p><b>Conclusions:</b> When combined with G-CSF, BKT140 is a safe and efficient stem cell mobilizer that enabled the collection of a high number of CD34<sup>+</sup> cells in 1 and 2 aphaeresis procedures, resulting in successful engraftment. <i>Clin Cancer Res; 20(2); 469–79. ©2013 AACR</i>.</p></div>" @default.
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- W4361961370 date "2023-03-31" @default.
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- W4361961370 title "Data from The High-Affinity CXCR4 Antagonist BKT140 Is Safe and Induces a Robust Mobilization of Human CD34<sup>+</sup> Cells in Patients with Multiple Myeloma" @default.
- W4361961370 doi "https://doi.org/10.1158/1078-0432.c.6521523" @default.
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