Publications by authors named "Shibayama H"

Article Synopsis
  • This study is a follow-up on the effectiveness and safety of tazemetostat for Japanese patients with relapsed/refractory follicular lymphoma (FL) and diffuse large B-cell lymphoma (DLBCL) who have the EZH2 mutation, after a median follow-up of 35 months.
  • The FL cohort had an impressive objective response rate of 70.6%, with significant progression-free survival (PFS) rates at 24 and 36 months (72.1% and 64.1% respectively), while no unexpected severe adverse events were reported.
  • Overall, long-term treatment with tazemetostat appears to be a promising and safe option as a third-line or later therapy for patients with this specific
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The prognosis for multiple myeloma (MM) patients has improved with the advent of new drugs, but the prognosis with renal impairment (RI) is poor. The choice of treatment in such cases is critical, but there are no set criteria. We examined the impact of RI on initial therapy in transplant-ineligible MM patients.

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Background: Isatuximab, an anti-CD38 antibody, has been widely used in treatments for patients with relapsed/refractory multiple myeloma (MM). Despite its high efficacy, not all patients achieve a lasting therapeutic response with isatuximab.

Objective: We tried to identify biomarkers to predict the effectiveness of isatuximab by focusing on the host's immune status before treatment.

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The emergence of novel drugs has significantly improved outcomes of patients with plasma cell neoplasms (PCN). The Japanese Society of Hematology conducted a prospective observational study in newly diagnosed PCN patients between 2016 and 2021. The analysis focused on 1385 patients diagnosed with symptomatic PCN between 2016 and 2018.

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Response determined by 18[F]-fluoro-2-deoxy-D-glucose (F-FDG) positron emission tomography (PET)-CT after induction therapy can predict progression-free survival (PFS) in follicular lymphoma (FL). However, little prospective research has examined the significance of PET after second-line therapy. We conducted a prospective multicenter phase II trial (W-JHS NHL01) of bendamustine plus rituximab (BR) without rituximab maintenance for FL in first relapse.

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Article Synopsis
  • Elotuzumab is sometimes used for multiple myeloma treatment after daratumumab, but its effectiveness in this sequence is under-researched.
  • A study found that patients receiving elotuzumab after daratumumab had significantly worse overall survival and time to next treatment compared to those who hadn’t previously used daratumumab.
  • Results indicated that elotuzumab should ideally be administered at least 180 days after daratumumab to improve patient outcomes, suggesting that treatments without monoclonal antibodies might be a better option following daratumumab regimens.
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  • The study investigates how specific genetic mutations in circulating tumor DNA (ctDNA) impact the prognosis of patients with relapsed/refractory multiple myeloma (RRMM) undergoing treatment.
  • Researchers identified 24 mutations in bone marrow plasma cells (BMPC) and 47 in ctDNA from 261 RRMM cases, with certain mutations, especially in the TP53 gene, linked to worse progression-free survival (PFS).
  • A new prognostic index based on the number of ctDNA mutations, plasma DNA concentration, and clinical factors was developed, highlighting ctDNA's role as a superior predictor for patient outcomes compared to mutations found in BMPC.
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  • Accurate differentiation between donor-derived post-transplant lymphoproliferative disorder (PTLD) and relapsed recipient-derived lymphoproliferative disorder (LPD) is essential for effective treatment post-hematopoietic stem cell transplantation (HSCT).
  • Traditional diagnostic methods often fall short, especially in cases involving Epstein-Barr virus (EBV)-positive LPDs with low tumor cell counts.
  • The newly developed method utilizes sex chromosome fluorescence in situ hybridization and other techniques on a single tissue section, successfully enabling accurate diagnosis of difficult cases and preserving histological structure.
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  • The study analyzed 923 multiple myeloma patients, focusing on the prognostic value of high-risk chromosomal abnormalities (CAs).
  • Among the 480 patients with complete data, the overall survival (OS) was considerably lower for those with high-risk CAs compared to those without.
  • Specifically, patients with double-positive CAs faced the worst prognosis, with a median OS of just 2.1 years, compared to 6.5 years for those without any CAs.
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Introduction: Postoperative ulnar neuropathy is still an unresolved complication in patients undergoing plate fixation of distal humerus fractures. We hypothesized that decreased blood flow to the ulnar nerve due to intraoperative procedures is an important factor in the development of postoperative ulnar neuropathy. We herein report three cases of distal humerus fractures in which the soft tissues surrounding the ulnar nerve were preserved as much as possible and finally not transferred anteriorly.

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Article Synopsis
  • Deeper responses to treatment in multiple myeloma (MM) help patients live longer.
  • In a study with newly diagnosed patients, those who responded slowly or showed deeper responses had better survival rates.
  • The results suggest that taking longer to respond to treatment isn't a bad sign and can still lead to good outcomes.
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Real-world studies permit inclusion of a more diverse patient population and provide more information on the effectiveness of treatments used in routine clinical practice. This prospective, multicenter, observational study investigated the effectiveness and safety of ixazomib plus lenalidomide and dexamethasone (IRd) in 295 patients with relapsed/refractory multiple myeloma (RRMM) in routine clinical practice in Japan. Patients had a median age of 74 years, 80.

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To investigate the real-world clinical outcomes and management of novel drug-containing therapies for newly diagnosed multiple myeloma (MM) patients, we retrospectively analyzed data on the first-line treatment for newly diagnosed transplant-ineligible MM patients from Kansai Myeloma Forum, a registry network in Japan. A total of 598 patients treated with novel drugs between March 2007 and February 2018 were analyzed. Regimens used were VD (n = 305), Rd (n = 103), VMP (n = 97), VCD (n = 71), and VRd (n = 22).

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An 84-year-old Japanese man was diagnosed with blastic plasmacytoid dendritic cell neoplasm (BPDCN). We administered combination therapy using venetoclax and azacytidine. We observed neutropenia (Grade 4), thrombocytopenia (Grade 2), and stomatitis (Grade 3).

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  • A subgroup analysis from the Asian phase II study of darinaparsin focused on its efficacy and safety in 37 Japanese patients with relapsed or refractory peripheral T-cell lymphoma (PTCL).
  • The Japanese PTCL patients primarily had different histopathological types, with a median age of 70, and a high percentage having previously received various treatment regimens.
  • The study found that the overall response rate for Japanese patients was 22.2%, similar to the 19.3% seen in the overall population, indicating that darinaparsin is a potentially effective and safe treatment for this specific group.
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Background: Patients with heel pad degloving injury frequently develop ischemic necrosis of the area, necessitating soft-tissue reconstruction surgery. We have developed a technique for arterialization of the plantar venous system via vein graft (APV) as the primary revascularization treatment. The objective of this study was to clarify both the utility of APV for the preservation of degloved heel pads and the impact of this preservation on clinical outcomes.

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Article Synopsis
  • The patient had a soft, elastic mass on the left index finger, indicating a possible tumor or growth.
  • Microscopic examination revealed a high density of spindle-shaped cells arranged in a storiform (wave-like) pattern.
  • Immunohistochemical tests showed positive results for CD68, factor XIIIa, and α-smooth muscle actin, while being negative for CD34, STAT6, S100 protein, and desmin, helping to narrow down the diagnosis.
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  • A 75-year-old man presented with head masses and a spine fracture; tests showed high immunoglobulin G (IgG) levels and monoclonal IgGκ.
  • Imaging revealed multiple bone lesions, but a bone marrow sample showed only a small percentage of plasma cells.
  • He was diagnosed with plasmablastic lymphoma (PBL), characterized by aggressive B-cell behavior but lacking B-cell antigens, and recovered fully after receiving DA-EPOCH treatment, confirmed by Epstein-Barr virus positivity.
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Novel therapeutic drugs have dramatically improved the overall survival of patients with multiple myeloma. We sought to identify the characteristics of patients likely to exhibit a durable response to one such drug, elotuzumab, by analyzing a real-world database in Japan. We analyzed 179 patients who underwent 201 elotuzumab treatments.

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Article Synopsis
  • A multicenter study in Japan, HM-SCREEN-Japan 01, focused on detecting genetic mutations in acute myeloid leukemia (AML) patients using paraffin-embedded bone marrow clot samples, which is a less invasive method than using bone marrow fluid.* -
  • The study involved 188 patients and found actionable genetic mutations in 38% of them, which could guide treatment decisions, while also detecting a high rate of genetic alterations and fusion transcripts.* -
  • Key mutations, such as those in KIT and WT1, were linked to overall survival rates, highlighting the potential of comprehensive genomic profiling in identifying effective therapeutic targets for newly diagnosed and relapsed AML patients.*
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  • Dupuytren's contracture (DC) is a condition marked by fibrosis in the hand, lacking effective treatments, and linked to specific genetic risk factors.
  • Researchers studied the roles of two SNPs related to DC in the SFRP4 protein, which is involved in amplifying inflammation through IL-6 and NF-κB activation.
  • Findings suggest that SFRP4 is connected to the worsening of DC, especially in patients with risk alleles, indicating it could be a potential target for new therapies for this and other inflammatory conditions.
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Introduction: Malunion of intra-articular fracture of the elbow in children is uncommon and may be difficult to treat. Intra-articular corrective osteotomies are still not commonly performed in children, and the main reason is the concern regarding the risk of osteonecrosis. We present a case of extra-articular corrective osteotomy for malunion after open reduction and internal fixation for fracture dislocation of the elbow.

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Background: Daratumumab is one of the most widely used treatments for relapsed/refractory multiple myeloma (MM) patients. However, not all patients achieve a lasting therapeutic response with daratumumab.

Objectives: We hypothesized that a durable response to daratumumab could be predicted by the balance between the MM tumor burden and host immune status.

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Dysbiosis of the gut microbiota has been reported to increase early complications after allogeneic haematopoietic stem cell transplantation (allo-HSCT). However, it remains unclear whether gut microbial alterations persist during late complications, such as chronic graft-versus-host disease (cGVHD) or secondary cancers. Here, we analysed the gut microbiota of 59 patients who survived for 1-21.

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