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Ide D, Fujino T, Kobayashi T, Egashira A, Miyashita A, Mizuhara K, Isa R, Tsukamoto T, Mizutani S, Uchiyama H, Kaneko H, Uoshima N, Kawata E, Taniwaki M, Shimura Y, Kuroda J. Prognostic model for relapsed/refractory transplant-ineligible diffuse large B-cell lymphoma utilizing the lymphocyte-to-monocyte ratio. Int J Hematol 2024; 119:697-706. [PMID: 38492199 DOI: 10.1007/s12185-024-03750-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 02/29/2024] [Accepted: 03/06/2024] [Indexed: 03/18/2024]
Abstract
We conducted a multi-institutional retrospective study in 100 transplant-ineligible (TI) patients with diffuse large B-cell lymphoma (DLBCL) that relapsed or progressed after first-line R-CHOP (or -like) therapy to develop a robust predictive model for TI relapsed/refractory (r/r) DLBCL, which has a heterogeneous but poor prognosis by currently available treatment modalities other than chimeric antigen receptor T-cell (CAR-T) therapy or bispecific antibodies. The median age at relapse or progression was 76 years. The median progression-free survival (PFS) and overall survival (OS) from the first progression were 11.5 months and 21.9 months, respectively. Multivariate analysis identified low lymphocyte-to-monocyte ratio (LMR), elevated high lactate dehydrogenase, and elevated C-reactive protein at progression as independent predictors of OS. A predictive model based on these three factors, here designated as the Kyoto Prognostic Index for r/r DLBCL (KPI-R), successfully stratified their OS and PFS with statistical significance. In addition, event-free survival less than 24 months for R-CHOP and low LMR were identified as significant predictive factors for non-response in any sequence of salvage therapy. We concluded that LMR is a bonafide predictor of treatment response and prognosis in patients with TI r/r DLBCL, and may be helpful in treatment decision-making.
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Affiliation(s)
- Daisuke Ide
- Division of Hematology and Oncology, Department of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Takahiro Fujino
- Division of Hematology and Oncology, Department of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
- Department of Hematology, Japanese Red Cross Kyoto Daiichi Hospital, Kyoto, Japan
| | - Tsutomu Kobayashi
- Division of Hematology and Oncology, Department of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
- Department of Hematology, Japanese Red Cross Kyoto Daiichi Hospital, Kyoto, Japan
| | - Aya Egashira
- Department of Hematology, Japanese Red Cross Kyoto Daini Hospital, Kyoto, Japan
| | - Akihiro Miyashita
- Division of Hematology and Oncology, Department of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Kentaro Mizuhara
- Division of Hematology and Oncology, Department of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Reiko Isa
- Division of Hematology and Oncology, Department of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
- Department of Hematology, Japanese Red Cross Kyoto Daini Hospital, Kyoto, Japan
- Department of Hematology, Aiseikai Yamashina Hospital, Kyoto, Japan
| | - Taku Tsukamoto
- Division of Hematology and Oncology, Department of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Shinsuke Mizutani
- Division of Hematology and Oncology, Department of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Hitoji Uchiyama
- Division of Hematology and Oncology, Department of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
- Department of Hematology, Japanese Red Cross Kyoto Daiichi Hospital, Kyoto, Japan
- Department of Hematology, Japanese Red Cross Kyoto Daini Hospital, Kyoto, Japan
| | - Hiroto Kaneko
- Department of Hematology, Japanese Red Cross Kyoto Daiichi Hospital, Kyoto, Japan
- Department of Hematology, Aiseikai Yamashina Hospital, Kyoto, Japan
| | - Nobuhiko Uoshima
- Department of Hematology, Japanese Red Cross Kyoto Daini Hospital, Kyoto, Japan
| | - Eri Kawata
- Department of Hematology, Japanese Red Cross Kyoto Daiichi Hospital, Kyoto, Japan
- Department of Hematology, Matsushita Memorial Hospital, Moriguchi, Japan
| | - Masafumi Taniwaki
- Division of Hematology and Oncology, Department of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
- Department of Hematology, Aiseikai Yamashina Hospital, Kyoto, Japan
| | - Yuji Shimura
- Division of Hematology and Oncology, Department of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
- Department of Blood Transfusion, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Junya Kuroda
- Division of Hematology and Oncology, Department of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan.
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Li Y, Zhang Y, Wang W, Wei C, Zhao D, Zhang W. Follicular Lymphoma in China: Systematic Evaluation of Follicular Lymphoma Prognostic Models. Cancer Manag Res 2022; 14:1385-1393. [PMID: 35422658 PMCID: PMC9005237 DOI: 10.2147/cmar.s349193] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 03/31/2022] [Indexed: 01/18/2023] Open
Affiliation(s)
- Yanan Li
- Department of Hematology, Peking Union Medical College Hospital, Beijing, People’s Republic of China
| | - Yan Zhang
- Department of Hematology, Peking Union Medical College Hospital, Beijing, People’s Republic of China
| | - Wei Wang
- Department of Hematology, Peking Union Medical College Hospital, Beijing, People’s Republic of China
| | - Chong Wei
- Department of Hematology, Peking Union Medical College Hospital, Beijing, People’s Republic of China
| | - Danqing Zhao
- Department of Hematology, Peking Union Medical College Hospital, Beijing, People’s Republic of China
| | - Wei Zhang
- Department of Hematology, Peking Union Medical College Hospital, Beijing, People’s Republic of China
- Correspondence: Wei Zhang, Email
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Wang W, Yin J, Zhang W, Zhang Y, Zhou D, Zhao D, Wei C. Novel model predicts prognosis for patients with diffuse large B-cell lymphoma in first relapse after initial R-CHOP therapy: a single-institution study in China. J Int Med Res 2021; 49:3000605211002971. [PMID: 33845607 PMCID: PMC8047837 DOI: 10.1177/03000605211002971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To develop a prognostic model for Chinese patients with relapsed diffuse large B-cell lymphoma (DLBCL) after initial R-CHOP therapy. METHODS We retrospectively analyzed the characteristics and survival outcomes of 79 patients with relapsed DLBCL initially treated with R-CHOP at Peking Union Medical College Hospital from February 2012 to September 2016. We used the data to develop a novel prognostic model. RESULTS The median age at the start of salvage therapy was 59 (17-85) years and median time from diagnosis to relapse was 319 (49-1018) days. Multivariate analysis identified short time to relapse (TTR) and B symptoms as independent prognostic factors for reduced progression-free survival (PFS) and overall survival (OS). We created a new prognostic scoring system including TTR, lactate dehydrogenase, absolute lymphocyte count at relapse, and B symptoms, referred to as the TLLB model, which could separate patients into three risk groups with 2-year PFS and OS rates of 70.7%, 40.0%, and 11.1%, and 87.5%, 53.7%, and 29.4%, respectively. CONCLUSION TTR and B symptoms can be used as important predictors of survival in patients with DLBCL. The TLLB system provides a useful prognostic model compared with the previous TTL system.
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Affiliation(s)
- Wei Wang
- Department of Hematology, Peking Union Medical College Hospital, Beijing, China
| | - Jingjing Yin
- Department of Hematology, Beijing Hospital, Beijing, China
| | - Wei Zhang
- Department of Hematology, Peking Union Medical College Hospital, Beijing, China
| | - Yan Zhang
- Department of Hematology, Peking Union Medical College Hospital, Beijing, China
| | - Daobin Zhou
- Department of Hematology, Peking Union Medical College Hospital, Beijing, China
| | - Danqing Zhao
- Department of Hematology, Peking Union Medical College Hospital, Beijing, China
| | - Chong Wei
- Department of Hematology, Peking Union Medical College Hospital, Beijing, China
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Gao F, Hu J, Zhang J, Xu Y. Prognostic Value of Peripheral Blood Lymphocyte/monocyte Ratio in Lymphoma. J Cancer 2021; 12:3407-3417. [PMID: 33995619 PMCID: PMC8120176 DOI: 10.7150/jca.50552] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Accepted: 03/28/2021] [Indexed: 11/17/2022] Open
Abstract
Objective: Lymphocyte monocyte ratio (LMR) has been considered as a prognostic factor in patients with lymphoma, which focused on diffuse large B-cell lymphoma (DLBCL) and Hodgkin lymphoma (HL). Recently, many relevant clinical studies have been published with inconsistent results. To gain a more comprehensive view of the prognostic value of LMR, we conducted a meta-analysis on the significance of peripheral LMR in all subtypes of lymphoma. Methods: PubMed, PMC, Web of Science, Embase, and Cochrane Library were searched for relevant articles to conduct a meta-analysis. Hazard ratio (HR) and its 95% confidence interval (CI) of OS and PFS were extracted and pooled on stata12.1. Results: In the meta-analysis, forty studies were eligible and a total of 10446 patients were included. Low LMR was associated with an inferior OS (HR=2.45, 95%CI 1.95-3.08) and PFS (HR=2.36, 95%CI 1.94-2.88). In the analysis of lymphoma subtypes, similar results were seen in HL, NHL, and its subtypes including DLBCL, NK/T cell lymphoma, and follicular lymphoma. In addition, low LMR was related with higher LDH (OR=2.26, 95%CI 1.66-3.09), advanced tumor staging (OR=0.41, 95%CI 0.36-0.46), IPI score (OR=0.40, 95%CI 0.33-0.48), but not with bone marrow involvement (OR=1.24, 95%CI 0.85-1.81) or pathological subtype (OR=0.69, 95%CI 0.41-1.16). Conclusion: Low LMR in peripheral blood indicates poor prognosis in patients with lymphoma. As a simple clinical indicator, peripheral blood LMR combined with existing prognostic factors can improve the accuracy of lymphoma prognosis assessment.
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Affiliation(s)
- Feiqiong Gao
- Department of Hematology, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Jianlai Hu
- Department of Prosthodontics, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Jiawei Zhang
- Department of Hematology, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Yang Xu
- Department of Hematology, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China.,Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou 310058, China
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Yokus O, Saglam EN, Goze H, Sametoglu F, Serin I. Prognostic Role of Lymphocyte/Monocyte Ratio in Chronic Lymphocytic Leukemia. J Hematol 2020; 9:116-122. [PMID: 33224391 PMCID: PMC7665864 DOI: 10.14740/jh730] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 08/18/2020] [Indexed: 11/23/2022] Open
Abstract
Background Chronic lymphocytic leukemia (CLL) is a B-lymphoproliferative disease with varying clinical characteristics, which occurs mostly in older ages. In studies from literature, we see that different parameters are examined to determine the prognosis of CLL. The main purpose of our study is to determine the relationship of lymphocyte/monocyte ratio (LMR) value in CLL, which has been previously shown to be a prognostic factor in various solid organ tumors and some hematological malignancies. Methods A total of 173 patients who were followed up between 2005 and 2019 were retrospectively analyzed. The diagnostic age, gender, laboratory, absolute lymphocyte and monocyte count, LMR and overall survival (OS), treatment and responses, recurrence, cytogenetic subtype and mortality rates were examined. Results The median LMR was 26.7 and it was considered as cut-off value of 26. A positive correlation was found between LMR and Rai Stage. LMR was significantly higher in patients who have an indication for treatment or who died. Conclusions In our study, in CLL, LMR has been shown to be over 26 in advanced stages, in relapse or with indication of a treatment. With the increase of LMR, it was found that survival and disease-free gap decreased.
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Affiliation(s)
- Osman Yokus
- Department of Hematology, University of Health Sciences, Istanbul Training and Research Hospital, Fatih, Istanbul, Turkey
| | - Esma Nur Saglam
- Department of Internal Medicine, University of Health Sciences, Istanbul Training and Research Hospital, Fatih, Istanbul, Turkey
| | - Hasan Goze
- Department of Hematology, University of Health Sciences, Istanbul Training and Research Hospital, Fatih, Istanbul, Turkey
| | - Fettah Sametoglu
- Department of Internal Medicine, University of Health Sciences, Istanbul Training and Research Hospital, Fatih, Istanbul, Turkey
| | - Istemi Serin
- Department of Hematology, University of Health Sciences, Istanbul Training and Research Hospital, Fatih, Istanbul, Turkey
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Jiang S, Qin Y, Liu P, Yang J, Yang S, He X, Zhou S, Gui L, Zhang C, Zhou L, Sun Y, Shi Y. A prognostic nomogram constructed for relapsed or refractory diffuse large B-cell lymphoma patients. Asia Pac J Clin Oncol 2019; 18:e11-e16. [PMID: 31264371 DOI: 10.1111/ajco.13222] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 06/11/2019] [Indexed: 12/11/2022]
Abstract
AIM The clinical course of diffuse large B-cell lymphoma (DLBCL) is variable and there is a lack of prognostic markers and models for relapsed or refractory (r/r) DLBCL. Hence, we conducted this study to identify independent factors that can predict the survival rate of r/r DLBCL patients. METHODS A total of 416 r/r DLBCL patients who were pretreated with first-line anthracycline-based chemotherapy at the National Cancer Center in China between 2006 and 2016 were divided into the primary (n = 291) and validation (n = 125) cohorts. The effect of preclinical and clinical indicators on DLBCL survival rates of the two cohorts were evaluated by univariate and multivariate analyses. Factors showing good correlation with patient survival rates were used to construct a prognostic nomogram. RESULTS Multivariate analysis of the primary cohort revealed five independent prognostic factors: lactate dehydrogenase level at diagnosis, response to front line treatment, progression/recurrence pattern, location, and invasion on progression/recurrence, which were then used to construct a nomogram. The nomogram was shown to have a C-index of 0.76 and AUC values of 0.81 and 0.80 for the primary and validation cohorts, respectively, suggesting good prognostic power. We further stratified the r/r DLBCL patients into four risk groups according to the newly developed nomogram. CONCLUSION The prognostic nomogram constructed using the five identified clinical indicators can potentially be applied in the clinical setting to guide treatment decision.
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Affiliation(s)
- Shiyu Jiang
- Department of Medical Oncology, Beijing Key Laboratory of Clinical Study on Anticancer Molecular Targeted Drugs, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Yan Qin
- Department of Medical Oncology, Beijing Key Laboratory of Clinical Study on Anticancer Molecular Targeted Drugs, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Peng Liu
- Department of Medical Oncology, Beijing Key Laboratory of Clinical Study on Anticancer Molecular Targeted Drugs, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Jianliang Yang
- Department of Medical Oncology, Beijing Key Laboratory of Clinical Study on Anticancer Molecular Targeted Drugs, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Sheng Yang
- Department of Medical Oncology, Beijing Key Laboratory of Clinical Study on Anticancer Molecular Targeted Drugs, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Xiaohui He
- Department of Medical Oncology, Beijing Key Laboratory of Clinical Study on Anticancer Molecular Targeted Drugs, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Shengyu Zhou
- Department of Medical Oncology, Beijing Key Laboratory of Clinical Study on Anticancer Molecular Targeted Drugs, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Lin Gui
- Department of Medical Oncology, Beijing Key Laboratory of Clinical Study on Anticancer Molecular Targeted Drugs, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Changgong Zhang
- Department of Medical Oncology, Beijing Key Laboratory of Clinical Study on Anticancer Molecular Targeted Drugs, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Liqiang Zhou
- Department of Medical Oncology, Beijing Key Laboratory of Clinical Study on Anticancer Molecular Targeted Drugs, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Yan Sun
- Department of Medical Oncology, Beijing Key Laboratory of Clinical Study on Anticancer Molecular Targeted Drugs, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Yuankai Shi
- Department of Medical Oncology, Beijing Key Laboratory of Clinical Study on Anticancer Molecular Targeted Drugs, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
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Umino K, Fujiwara SI, Ikeda T, Kawaguchi SI, Toda Y, Ito S, Ochi SI, Nagayama T, Mashima K, Minakata D, Nakano H, Yamasaki R, Morita K, Kawasaki Y, Yamamoto C, Ashizawa M, Hatano K, Sato K, Oh I, Ohmine K, Muroi K, Kanda Y. Impact of the soluble interleukin-2 receptor level in the relapsed or refractory phase on the clinical outcome of patients with diffuse large B-cell lymphoma. Leuk Lymphoma 2019; 60:1926-1933. [PMID: 30947577 DOI: 10.1080/10428194.2018.1564824] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
This study sought to investigate the impact of the soluble interleukin-2 receptor level in the relapsed or refractory phase (r/r sIL-2R) on the clinical outcome in patients with diffuse large B-cell lymphoma (DLBCL). We determined the optimal cutoff value of r/r sIL-2R for disease progression within 6 months from salvage chemotherapy to be 861 U/mL. The high r/r sIL-2R group exhibited a significantly lower survival rate than the low r/r sIL-2R group (1-year event-free survival [EFS], 22.6% vs. 55.7%, p < .001 and 1-year overall survival [OS], 45.9% vs. 75.1%, p < .001). Independent significant correlations were observed between r/r sIL-2R and both inferior 1-year EFS and OS in a multivariate analysis (hazard ratio [HR]: 2.69, 95% CI: 1.61-4.51, p < .001 and HR: 2.99, 95% CI: 1.57-5.70, p < .001). This study demonstrates that r/r sIL-2R could be useful for predicting a poor prognosis in patients with r/r DLBCL.
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Affiliation(s)
- Kento Umino
- a Division of Hematology, Department of Medicine , Jichi Medical University , Tochigi , Japan
| | - Shin-Ichiro Fujiwara
- a Division of Hematology, Department of Medicine , Jichi Medical University , Tochigi , Japan
| | - Takashi Ikeda
- a Division of Hematology, Department of Medicine , Jichi Medical University , Tochigi , Japan
| | - Shin-Ichiro Kawaguchi
- a Division of Hematology, Department of Medicine , Jichi Medical University , Tochigi , Japan
| | - Yumiko Toda
- a Division of Hematology, Department of Medicine , Jichi Medical University , Tochigi , Japan
| | - Shoko Ito
- a Division of Hematology, Department of Medicine , Jichi Medical University , Tochigi , Japan
| | - Shin-Ichi Ochi
- a Division of Hematology, Department of Medicine , Jichi Medical University , Tochigi , Japan
| | - Takashi Nagayama
- a Division of Hematology, Department of Medicine , Jichi Medical University , Tochigi , Japan
| | - Kiyomi Mashima
- a Division of Hematology, Department of Medicine , Jichi Medical University , Tochigi , Japan
| | - Daisuke Minakata
- a Division of Hematology, Department of Medicine , Jichi Medical University , Tochigi , Japan
| | - Hirofumi Nakano
- a Division of Hematology, Department of Medicine , Jichi Medical University , Tochigi , Japan
| | - Ryoko Yamasaki
- a Division of Hematology, Department of Medicine , Jichi Medical University , Tochigi , Japan
| | - Kaoru Morita
- a Division of Hematology, Department of Medicine , Jichi Medical University , Tochigi , Japan
| | - Yasufumi Kawasaki
- a Division of Hematology, Department of Medicine , Jichi Medical University , Tochigi , Japan
| | - Chihiro Yamamoto
- a Division of Hematology, Department of Medicine , Jichi Medical University , Tochigi , Japan
| | - Masahiro Ashizawa
- a Division of Hematology, Department of Medicine , Jichi Medical University , Tochigi , Japan
| | - Kaoru Hatano
- a Division of Hematology, Department of Medicine , Jichi Medical University , Tochigi , Japan
| | - Kazuya Sato
- a Division of Hematology, Department of Medicine , Jichi Medical University , Tochigi , Japan
| | - Iekuni Oh
- a Division of Hematology, Department of Medicine , Jichi Medical University , Tochigi , Japan
| | - Ken Ohmine
- a Division of Hematology, Department of Medicine , Jichi Medical University , Tochigi , Japan
| | - Kazuo Muroi
- a Division of Hematology, Department of Medicine , Jichi Medical University , Tochigi , Japan
| | - Yoshinobu Kanda
- a Division of Hematology, Department of Medicine , Jichi Medical University , Tochigi , Japan
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