Clinical research of genetically modified dendritic cells in combination with cytokine-induced killer cell treatment in advanced renal cancer.
BACKGROUND
Renal cell carcinoma (RCC) is a malignant disease that demonstrates resistance to standard chemotherapeutic agents. Yet Active immunization using genetically modified dendritic cells holds promise for the adjuvant treatment of malignancies to eradicate or control residual disease. Cytokine-induced killer (CIK) cells are a heterogeneous population of effector CD8+ T cells with diverse TCR specificities, possessing non-MHC-restricted cytolytic activities against tumor cells. Clinical studies have confirmed benefit and safety of CIK cell-based therapy for patients with malignancies. This clinical trial was conducted to evaluate efficacy and safety of genetically modified dendritic cells in combination with Cytokine-Induced Killer Cell (gmDCs-CIK) treatment of patients with RCC.


METHODS
28 patients with advanced renal cancer were admitted to Affiliated Hospital of Academy of Military Medical Sciences from December 2010 to March 2012 and treated by gmDCs-CIK. Clinical efficacy and safety between pre- and post-treatment were compared.


RESULTS
This analysis showed an objective response rate (ORR) of 39% and a disease control rate (DCR) of as 75%. There is no significant relationship between clinical efficacy and whether metastasis occurred or not (P > 0.05). There is no significant relationship between ORR and cycles of treatment (P > 0.05), but DCR was significantly related with cycles of treatment (P < 0.05). No clinically significant side effects were observed. There were no significant changes of T cell subsets including CD3+, CD4+, CD8+, CD4+ CD25+ Treg cells except Th1 in peripheral blood between day 30 after immunotherapy and 1 day before immunotherapy in 11 patients.


CONCLUSIONS
DC-CIK is feasible and effective in treating advanced renal cancer and thus provides a new approach.


BACKGROUND
ClinicalTrials.gov Identifier: NCT01924156. Registration date: August 14, 2013.
Danhong
D
Wang
Bin
B
Zhang
Haiyan
H
Gao
Guoliang
G
Ding
Qiong
Q
Wu
Jinchao
J
Zhang
Li
L
Liao
Department of Hematopoietic Stem Cell Transplantation, Affiliated Hospital of Academy of Military Medical Sciences, Beijing, China. chenhu217@yahoo.com.cn.
Hu
H
Chen
D018414:CD8-Positive T-Lymphocytes / Q000276:immunology; D019496:Cancer Vaccines / Q000009:adverse effects / Q000276:immunology; D064987:Cell- and Tissue-Based Therapy; D055612:Cytokine-Induced Killer Cells / Q000276:immunology*; D003713:Dendritic Cells / Q000276:immunology*; D064420:Drug-Related Side Effects and Adverse Reactions; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000276:immunology / Q000473:pathology / Q000628:therapy*; D008297:Male
D019496:Cancer Vaccines