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Westermann, J.* ; Flörcken, A.* ; Willimsky, G.* ; van, Lessen, A.* ; Kopp, J.* ; Takvorian, A.* ; Jöhrens, K.* ; Lukowsky, A.* ; Schönemann, C.* ; Sawitzki, B.* ; Pohla, H. ; Frank, R. ; Dörken, B.* ; Schendel, D.J. ; Blankenstein, T.* ; Pezzutto, A.*

Allogeneic gene-modified tumor cells (RCC-26/IL-7/CD80) as a vaccine in patients with metastatic renal cell cancer: A clinical phase-I study.

Gene Ther. 18, 354-363 (2011)
DOI PMC
Open Access Green as soon as Postprint is submitted to ZB.
Despite novel targeted agents, prognosis of metastatic renal cell cancer (RCC) remains poor, and experimental therapeutic strategies are warranted. Transfection of tumor cells with co-stimulatory molecules and/or cytokines is able to increase immunogenicity. Therefore, in our clinical study, 10 human leukocyte antigen (HLA)-A(*)0201(+) patients with histologically-confirmed progressive metastatic clear cell RCC were immunized repetitively over 22 weeks with 2.5-40 × 10(6) interleukin (IL)-7/CD80 cotransfected allogeneic HLA-A(*)0201(+) tumor cells (RCC26/IL-7/CD80). Endpoints of the study were feasibility, safety, immunological and clinical responses. Vaccination was feasible and safe. In all, 50% of the patients showed stable disease throughout the study; the median time to progression was 18 weeks. However, vaccination with allogeneic RCC26/IL-7/CD80 tumor cells was not able to induce TH1-polarized immune responses. A TH2 cytokine profile with increasing amounts of antigen-specific IL-10 secretion was observed in most of the responding patients. Interferon-γ secretion by patient lymphocytes upon antigen-specific and non-specific stimulation was substantially impaired, both before and during vaccination, as compared with healthy controls. This is possibly due to profound tumor-induced immunosuppression, which may prevent induction of antitumor immune responses by the gene-modified vaccine. Vaccination in minimal residual disease with concurrent depletion of regulatory cells might be one strategy to overcome this limitation.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
Keywords allogeneic vaccine; renal cell carcinoma; gene transfer; tumor vaccination
ISSN (print) / ISBN 0969-7128
e-ISSN 1476-5462
Journal Gene Therapy
Quellenangaben Volume: 18, Issue: 4, Pages: 354-363 Article Number: , Supplement: ,
Publisher Nature Publishing Group
Non-patent literature Publications
Reviewing status Peer reviewed
Institute(s) Institute of Molecular Immunology (IMI)
CCG Immune Monitoring (Platform) (IMI-KIM)