Publications by authors named "Takeaki Sugawara"

Chronic myeloid leukemia (CML) is a myeloproliferative disorder caused by the BCR-ABL1 tyrosine kinase. Although ABL1-specific tyrosine kinase inhibitors (TKIs) including nilotinib have dramatically improved the prognosis of patients with CML, the TKI efficacy depends on the individual patient. In this work, we found that the patients with different nilotinib responses can be classified by using the estimated parameters of our simple dynamical model with two common laboratory findings.

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Classic Hodgkin lymphoma (cHL) responds markedly to PD-1 blockade therapy, and the clinical responses are reportedly dependent on expression of major histocompatibility complex class II (MHC-II). This dependence is different from other solid tumors, in which the MHC class I (MHC-I)/CD8+ T-cell axis plays a critical role. In this study, we investigated the role of the MHC-II/CD4+ T-cell axis in the antitumor effect of PD-1 blockade on cHL.

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For patients who have chronic myeloid leukemia (CML), one of the primary treatment options is administration of nilotinib 300 mg twice daily (BID). In previous studies which compared outcomes associated with nilotinib or imatinib treatment, nilotinib achieved a higher rate of deep molecular response (MR). We conducted a phase II, open-label, multicenter study to investigate an intrapatient nilotinib dose-escalation strategy for patients with newly diagnosed chronic-phase (CP) CML based on early MR achievement.

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Background: The efficacy of conventional chemotherapy and allogeneic hematopoietic stem cell transplantation (allo-HSCT) has been controversial as post-remission therapies for adult Philadelphia chromosome-negative acute lymphoblastic leukemia patients.

Methods: We retrospectively analyzed 96 adolescent and adult cases of Philadelphia chromosome-negative acute lymphoblastic leukemia to evaluate whether allo-HSCT should be performed after first complete remission (1CR).

Results: In total, 34 patients received chemotherapy followed by allo-HSCT (HSCT group) and 62 received chemotherapy alone (chemotherapy group).

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Blastic plasmacytoid dendritic cell neoplasm (BPDCN) is a rare and aggressive hematological malignancy derived from precursors of plasmacytoid dendritic cells. The majority of patients initially respond to multi-agent chemotherapy, though most relapse within a year and the prognosis is very poor. We report a 67-year-old man with erythema on the right chest and a nasopharyngeal mass.

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Background: LR11 (also called SorLA or SORL1) is a type I membrane protein, originally identified as a biomarker for atherosclerosis and Alzheimer's disease. We recently found that LR11 was specifically expressed in Diffuse Large B-cell lymphoma (DLBCL) cells, and high serum sLR11 concentrations in retrospective cohort indicated inferior survival. In this study, we prospectively validated the clinical impact of serum sLR11 in 97 patients with newly-diagnosed, untreated DLBCL.

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Primary gastrointestinal follicular lymphoma (FL) has an indolent clinical presentation and many of cases are diagnosed incidentally during routine endoscopic examinations. Herein, we present 3 cases with FL of the small intestine developed massive intestinal hemorrhage that necessitated blood transfusion. In all three patients, upper and lower endoscopic examinations failed to detect the bleeding sites.

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Histiocytic sarcoma (HS) is an extremely rare malignant neoplasm that often exhibits an aggressive clinical presentation. In this report, we describe the case of a 38-year-old female with advanced-stage HS who was found to have a subcutaneous tumor in the left calf and enlarged lymph nodes in the left inguinal and internal iliac regions. The subcutaneous tumor and inguinal nodes were resected operatively.

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Objective: Fus is the gene for a member of the FET family of RNA-binding proteins often involved in chromosomal translocations to generate oncogenic fusion genes in human cancers. Fus participates in multiple cellular functions, including RNA processing and transport, transcriptional regulation, and genome integrity. However, its role in hematopoiesis remains obscure.

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A 56-year-old Japanese man was admitted to our hospital due to a fever of unknown origin. He had had a history of extranodal natural killer (NK)/T-cell lymphoma, nasal type, and had been in complete remission for 7 years until June 2003, when he developed high fever, eyelid swelling, and muscular weakness. Serum creatine kinase levels were elevated.

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