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Argos Therapeutic Arcelis™ Immunotherapy AGS-003 in Combination With Sunitinib Shows Statistically Significant Correlation of Immune System Response to Overall Survival in Phase 2 Study in Patients with Advanced Renal Cell Carcinoma (RCC)
Date:1/31/2012

sed on the expression of the surface markers CD28, CD45RA, CD27 and CCR7, present in blood draws collected prior to treatment with AGS-003 or sunitinib and after administration of five doses of AGS-003 in combination with sunitinib.  Furthermore, each CTL subset was partitioned to an additional 64 functional subsets based on the expression of three cytokines (IFN-g, TNF-a, IL-2), lytic function (Granyme b, CD107 expression) and proliferation.  Correlates of CTL subsets with subjects' clinical lab characteristics were analyzed using an adaption of a binary tree-structured vector quantization (BTSVQ) approach used to cluster and visualize microarray data. The BTSVQ approach implements a two-way unsupervised clustering that allows each subject's clinical lab assessments, progression-free survival (PFS) and overall survival (OS) to be mapped back to immune responses to identify unique clustering patterns with clinical value. The data analysis identified one subset of CTL, with the CD8+CD28+CD45RA- memory CTL phenotype that trended with longer disease free intervals and was a statistically significant correlate to overall survival.

About the Arcelis™ Technology

Arcelis is Argos´ proprietary technology for personalizing RNA-loaded dendritic cell immunotherapies. This platform is based on optimizing a patient´s own (autologous) dendritic cells to trigger a tumor- or pathogen-specific immune response. To address the challenge of the unique genetic profile of each patient´s disease and the genetic mutations of that disease, Argos loads the autologous dendritic cells with a sample of messenger RNA ("mRNA") isolated from the patient´s disease. Through this process, dendritic cells can potentially prime immune responses to the entire antigenic repertoire, resulting in an immunotherapeutic that is fully personalized for each patient's disease.

About Argos Therapeutics

Argos Therapeutics is a biopharma
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