Abstract
Background aims
Despite the availability of multiple treatment strategies, patients with gastric carcinoma
(GC) have a dismal prognosis. The aim of this study was to evaluate the efficacy and
safety of cellular immunotherapy (CIT) with the use of autologous natural killer cells,
γδT cells and cytokine-induced killer cells in combination with chemotherapy in patients
with GC.
Methods
In this open-label pilot cohort study, patients were treated with the combination
therapy (chemo/CIT group) or chemotherapy alone (control group). Progression-free
survival (PFS), overall survival (OS), quality of life (QOL) and adverse events were
investigated.
Results
Fifty-eight patients were analyzed, 30 in the chemo/CIT group and 28 in the control
group. The median PFS of the chemo/CIT group was significantly longer compared with
the control group (P = 0.021). In subgroup analysis, in patients with stage III GC, node-positive metastasis
or poorly differentiated carcinoma, the 2-year PFS rate in chemo/CIT versus control
groups was 62.5% versus 26.7% (P = 0.022), 50% versus 27.3% (P = 0.016) and 56.3% versus 28.6% (P = 0.005), respectively. The median OS in either group has not yet been reached, and
there was no significant difference in OS between the groups. The QOL was improved
in the patients treated with chemo/CIT compared with the control group. CIT was well
tolerated and not related to any significant adverse events.
Conclusions
A combination of CIT and chemotherapy for patients with GC was safe, improved QOL,
and might prevent recurrence, especially in GC patients with advanced stage, poorly
differentiated carcinoma or lymph node metastasis.
Key Words
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Article info
Publication history
Published online: April 15, 2015
Accepted:
March 4,
2015
Received:
January 21,
2015
Identification
Copyright
© 2015 International Society for Cellular Therapy. Published by Elsevier Inc. All rights reserved.