Immune reconstitution of B‐cell lymphoma patients receiving CHOP‐based chemotherapy containing rituximab |
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Authors: | Toshiro Kurokawa Makiko Hase Naoko Tokuman Takashi Yoshida |
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Institution: | 1. Department of Internal Medicine, Toyama Prefectural Central Hospital, Toyama, Japan;2. Department of Clinical Laboratory Medicine, Toyama Prefectural Central Hospital, Toyama, Japan |
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Abstract: | Sixty‐six B‐cell lymphoma patients were treated with a CHOP‐based chemotherapy containing rituximab (R‐CHOP‐like regimen). Immune reconstitution was assessed by measuring lymphocyte subsets and immunoglobulins. Fifty‐five patients (83.3%) underwent six cycles of the R‐CHOP‐like regimen. CD19+ and CD20+ cells were completely eliminated from the peripheral blood after one cycle of the R‐CHOP‐like regimen; they were detected again 6 months after the therapy. One year after the therapy, B‐cell numbers recovered to their level at diagnosis and almost doubled 2 years after the therapy. The lowest numbers of CD3+, CD8+ and CD56+ cells were seen after three cycles of the regimen, but continued to increase until 1 year after the therapy, remaining stable thereafter. CD4+ T‐cells were at their lowest after six cycles of the regimen and recovered slowly for 2 years after the therapy; however, their numbers were still lower than that at diagnosis. Immunoglobulins decreased over six cycles of the R‐CHOP‐like regimen and then recovered gradually for 2 years after the therapy. The percentage of IgG, IgA and IgM 2 years after the therapy compared with those at diagnosis was 93.9%, 90.1%, 76.3%, respectively. Twelve infectious complications occurred which consisted of three febrile neutropenia, three Herpes Zoster, two tympanitis, two Pneumocystis jiroveci pneumonia and two hepatitis B virus reactivation. B‐cells required 1 year and CD4+ T‐cells and immunoglobulins needed 2 years to recover after the therapy. Copyright © 2010 John Wiley & Sons, Ltd. |
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Keywords: | B‐cell lymphoma R‐CHOP immune reconstitution |
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