Complementarity determining region-III is a useful molecular marker for the evaluation of minimal residual disease in mantle cell lymphoma |
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Authors: | Toshiro,Kurokawa ,Tomohiro,Kinoshita ,Takashi,Murate ,Tetsuro,Nagasaka ,Yoshitoyo,Kagami ,Michinori,Ogura ,Shigeo,Nakamura ,Masao,Seto ,Tomomitsu,Hotta & Hidehiko,Saito |
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Affiliation: | First Department of Internal Medicine,;Department of Laboratory Medicine, Nagoya University School of Medicine, Showa-ku, Nagoya,;Haematology and Chemotherapy,;Department of Pathology and Clinical Laboratories, Aichi Cancer Centre Hospital,;Laboratory of Chemotherapy, Aichi Cancer Centre Research Institute, Chikusa-ku, Nagoya,,;Fourth Department of Internal Medicine, Tokai University School of Medicine, Boseidai, Isehara-city, Kanagawa, Japan |
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Abstract: | Bone marrow (BM) and peripheral blood (PB) involvement in 10 patients with mantle cell lymphoma (MCL) was analysed by a polymerase chain reaction (PCR)-mediated RNase protection assay. The complementarity determining regions (CDR)-III of all 10 MCLs examined was amplified efficiently with consensus VH and JH primers by PCR, and BM and/or PB involvement was evaluated by RNase protection assay in all 10 patients examined. Our assay showed BM and/or PB of the entire group to have neoplastic cells at presentation, despite the fact that eight patients were found to have BM and/or PB involvement on the basis of morphological examination and/or surface marker analysis. We also examined minimal residual disease (MRD) after conventional chemotherapy, and detected MRD in a patient in complete remission (CR). Although previous studies have shown that t(11;14) breakpoint amplification by PCR was only applicable to about 30–40% of cases, the present study indicates that CDR-III is a useful molecular marker and the PCR-mediated RNase protection assay is a good tool for the evaluation of MRD in MCL. It is suggested that BM and PB of MCL patients are quite frequently involved at presentation and even after conventional chemotherapy at the molecular level. |
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Keywords: | mantle cell lymphoma minimal residual disease CDR-III PCR RNase protection assay |
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