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Kohtaro Toyama

Observed names: Kohtaro TOYAMA, Kohtarou Toyama
ORCID: 0000-0002-0276-3429
Observed ORCID: 0000-0002-0276-3429
OpenAlex ID: A5108699157
Circulating plasmacytoid dendritic cells in patients with primary and Helicobacter pylori‐associated immune thrombocytopenia
2011 · Akio Saito, Akihiko Yokohama, et al. · European Journal Of Haematology · 37
JAK2‐V617F mutation analysis of granulocytes and platelets from patients with chronic myeloproliferative disorders: advantage of studying platelets
2007 · Kohtaro Toyama, Masamitsu Karasawa, et al. · British Journal of Haematology · 25
Treatments and Outcomes of Newly Diagnosed CD5‐Positive Diffuse Large B‐Cell Lymphoma: A Multi‐Institutional Observational Study
2025 · Yuma Nato, Kana Miyazaki, et al. · Hematological Oncology · 13
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Prognostic Importance of the Soluble Form of IL-2 Receptor^|^alpha; (sIL-2R^|^alpha;) and its Relationship with Surface Expression of IL-2R^|^alpha; (CD25) of Lymphoma Cells in Diffuse Large B-cell Lymphoma Treated with CHOP-like Regimen with or without Rituximab : A Retrospective Analysis of 338 Cases
2013 · Yoko Hashimoto, Akihiko Yokohama, et al. · Journal of the Japan Society of the Reticuloendothelial System · 13
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Primary analysis of a prospective cohort study of Japanese patients with plasma cell neoplasms in the novel drug era (2016–2021)
2024 · Hirohiko Shibayama, Mitsuhiro Itagaki, et al. · International Journal of Hematology · 12
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Five‐year follow‐up of a phase II study of DA‐EPOCH‐R with high‐dose MTX in CD5 ‐positive DLBCL
2023 · Kana Miyazaki, Rika Sakai, et al. · Cancer Science · 9
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Prognostic impact of trisomy 21 in follicular lymphoma
2018 · Takeki Mitsui, Akihiko Yokohama, et al. · British Journal of Haematology · 6
Tumor long-axis diameter and SUVmax predict long-term responders in 90Y-ibritumomab tiuxetan monotherapy
2018 · Norifumi Tsukamoto, Akihiko Yokohama, et al. · International Journal of Hematology · 5
Differences in the JAK2 and MPL Mutation Status in the Cell Lineages of the bcr/abl-negative Chronic Myeloproliferative Neoplasm Subtypes
2011 · Kohtaro Toyama, Masamitsu Karasawa, et al. · Internal Medicine · 5
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Clinical management and outcomes of completely resected stage I follicular lymphoma
2018 · Akihiko Yokohama, Yoko Hashimoto, et al. · Journal of the Japan Society of the Reticuloendothelial System · 4
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Low burden of a JAK2-V617F mutated clone in monoclonal haematopoiesis in a Japanese woman with Budd-Chiari syndrome
2009 · Kohtaro Toyama, Masamitsu Karasawa, et al. · International Journal of Hematology · 4
Prognostic Value of Chromosomal Abnormalities for Follicular Lymphoma in the Rituximab-Era
2016 · Takeki Mitsui, Akihiko Yokohama, et al. · Blood · 3
Clinical experience of bendamustine for adult Langerhans cell sarcoma.
2014 · Yuri Miyazawa, Kenichi Tahara, et al. · PubMed · 3
Impact of the diagnosis-to-treatment interval on the survival of patients with CD5-positive diffuse large B-cell lymphoma
2026 · Yuma Nato, Kana Miyazaki, et al. · Annals of Hematology · 2
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Investigation of early mortality in the patients with newly diagnosed multiple myeloma: insights from a real-world cohort using J-CHAEGE-MM database
2025 · Michihide Tokuhira, Hitomi Nakayama, et al. · International Journal of Hematology · 2
Survival and CNS Relapse in Patients with CD5-Positive Diffuse Large B-Cell Lymphoma: A Multi-Institutional Observational Study in Japan
2023 · Yuma Nato, Kana Miyazaki, et al. · Blood · 2
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Real-world efficacy of DA-EPOCH-R/HD-MTX regimen in CD5-positive diffuse large B cell lymphoma: a single-institute analysis
2023 · Kohtaro Toyama, Keita Nakayama, et al. · Journal of the Japan Society of the Reticuloendothelial System · 2
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[Congenital factor V and factor VIII deficiency discovered in an elderly patient with abnormal bleeding after trauma].
2018 · Yoshiyuki Ogawa, Kunio Yanagisawa, et al. · PubMed · 2
Favorable response to daratumumab combination therapy in patients with multiple myeloma with an immature phenotype: a report from the J-CHARGE study group
2025 · Noriyoshi Iriyama, Hitomi Nakayama, et al. · International Journal of Hematology · 1
CNS prophylaxis with high-dose methotrexate and intrathecal chemotherapy improves survival in DLBCL with high CNS relapse risk
2025 · Yuri Miyazawa, Akihiko Yokohama, et al. · International Journal of Hematology · 1
Clinical characteristics of Japanese patients with myelodysplastic/myeloproliferative neoplasm with ring sideroblasts and thrombocytosis
2023 · Yoko Edahiro, Tomonori Ochiai, et al. · International Journal of Hematology · 1
Risk Factors for Central Nervous System (CNS) Relapse after Autologous Stem Cell Transplant (ASCT) in Diffuse Large B-Cell Lymphoma (DLBCL)
2019 · Yukie Terasaki, Hiroaki Shimizu, et al. · Blood · 1
Prognostic Importance of Soluble Form IL-2 Receptor á (sIL-2Rá) and Its Relationship with Surface Expression of IL-2Rá of Lymphoma Cell in Diffuse Large B-Cell Lymphoma Treated with Rituximab-Containing Chemotherapy: a Retrospective Analysis of 409 Cases.
2009 · Akihiko Yokohama, Yoko Hashimoto, et al. · Blood · 1
Successful treatment with reduced-intensity stem cell transplantation for secondary myelofibrosis following polycythemia vera.
2009 · Kenichi TAHARA, Akihiko YOKOHAMA, et al. · PubMed · 1
Evaluation of the UK Myeloma Research Alliance risk profile in transplant‐ineligible multiple myeloma patients treated with novel agents
2026 · Hitomi Nakayama, Tomonori Nakazato, et al. · British Journal of Haematology
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Works count: 43
Citation count: 155
H-index: 6
I10-index: 5
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