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Blood, 15 June 2007, Vol. 109, No. 12, pp. 5160-5163. Prepublished online as a Blood First Edition Paper on March 5, 2007; DOI 10.1182/blood-2006-12-063594.
CLINICAL TRIALS AND OBSERVATIONS A novel proteoliposomal vaccine induces antitumor immunity against follicular lymphoma1 Department of Lymphoma and Myeloma, The University of Texas M. D. Anderson Cancer Center, Houston, TX; 2 Experimental and Transplantation Immunology Branch, Center for Cancer Research, National Cancer Institute (NCI), National Institutes of Health (NIH), Bethesda, MD; 3 SAIC, National Cancer Institute (NCI), Frederick, MD; 4 XEME Biopharma, Inc., Plainsboro, NJ Clinical studies suggest that treatment with vaccines comprised of idiotype protein may be associated with improved clinical outcome in follicular lymphoma patients. The time-consuming process required to generate patient-specific vaccines is a major limitation, however. Here we report results of a pilot clinical trial with a novel autologous, tumor-derived proteoliposome vaccine formulation that could be rapidly produced within a single day. Vaccination was safe, induced autologous tumor-specific type 1 cytokine responses in 5 out of 10 follicular lymphoma patients, and was associated with induction of a sustained complete response in one patient. Other patients had large tumor burdens and progressed after a median duration of 8 months. These results suggest that further testing of this vaccine formulation, particularly in the setting of minimal disease, is warranted. Furthermore, the proteoliposome formulation may provide a model for vaccine development for other human cancers, for which tumor-associated antigens need not be defined.
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