Publications by authors named "Kenichi Yoshimura"

Introduction: Postendoscopic retrograde cholangiopancreatography (ERCP) pancreatitis (PEP) is a common, potentially serious adverse event of ERCP. Although rectal nonsteroidal anti-inflammatory drugs are recommended for prevention, their use in Japan is limited due to dosage concerns. This multicenter randomized controlled trial evaluated the efficacy and safety of ice water irrigation to the papilla in reducing PEP.

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Daiobotanpito (DBT) is a Kampo formula traditionally used to treat abscesses in intestinal disorders. This double-blind, multicenter, randomized controlled trial was conducted at participating hospitals in Japan. Patients with CT-proven moderate acute diverticulitis received conventional therapy along with an oral DBT (treatment group) or placebo (control group) administered thrice a day for 10 days (Registration: jRCTs041180063).

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Advanced gastric cancer (AGC) patients with severe peritoneal metastases (SPM), characterized by massive ascites and/or inadequate oral intake, have a poor prognosis with the median overall survival of around 7 months, even when treated with fluorouracil/l-leucovorin plus oxaliplatin (mFOLFOX6), despite being a treatment options for these patients demonstrated in the WJOG10517G study. However, these patients were excluded from pivotal Phase III trials, including the CheckMate 649 study, which demonstrated the benefit of adding nivolumab to mFOLFOX6, due to tumor-related complications. Given the lack of data on the efficacy and safety of combining nivolumab with mFOLFOX6 for AGC patients with SPM, we initiated a Phase II study to evaluate this combination.

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Background: Complete resection of the primary tumor is critical for the survival of children with hepatoblastomas (HBs). This prospective clinical study aimed to clarify the outcome of a chemotherapy regimen comprising cisplatin and doxorubicin (PLADO) followed by definitive surgery conducted at the appropriate time in patients with intermediate-risk HB.

Methods: Intermediate-risk HB was defined as patients without evidence of metastatic disease who met any of the following criteria: age ≥3 years; PRETEXT IV disease; presence of more than one PRETEXT annotation factor.

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Introduction: Chemoradiotherapy (CRT) followed by durvalumab is the standard of care for unresectable locally advanced NSCLC. Limited prospective data have been reported on intensity-modulated radiotherapy (IMRT)-adapted CRT in the immunotherapy era.

Methods: In this multicenter prospective observational study, patients underwent IMRT-adapted CRT (platinum-doublet chemotherapy plus 60 Gy IMRT in 30 fractions under a prespecified radiation protocol), followed by consolidative durvalumab.

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Background: Although segmentectomy is less invasive than lobectomy, little is known about the effect of these procedures on postoperative outcomes of patients with low muscle mass. This study examined the postoperative prognosis of patients with non-small cell lung cancer according to the surgical procedure type and preoperative muscle mass.

Methods: This study retrospectively reviewed data of patients who underwent lobectomy or segmentectomy for early-stage non-small cell lung cancer with ground glass opacity-dominant tumor up to 3 cm in size or solid-dominant tumor up to 2 cm in size between 2010 and 2020.

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Early snowmelt is known to accelerate budburst. Budburst and leaf expansion require water absorption, and current-year vessels, which function as water pathways, begin to mature in early spring. However, whether the limitation of xylem reactivation by snow affects budburst and leaf expansion remains unclear.

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Spirocyclic motifs are attracting increasing attention owing to their three-dimensional geometries that endow bioactive molecules with superior physical and biological properties. We developed an efficient method for constructing spirocyclic phthalans via the Ru-catalyzed [2 + 2 + 2] cycloaddition of cycloalkanone-derived 1,6-diynes with acetylene gas ex-situgenerated from calcium carbide and HO.

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  • The study examined the prevalence and characteristics of MSI-high tumors in patients with metastatic or recurrent gastric cancer (GC) that had not yet undergone chemotherapy.
  • MSI-high GC was found in 5.6% of patients, with higher prevalence in females, individuals aged 70 and older, tumors located in the lower stomach, HER2-negative cases, and patients without liver metastases.
  • Understanding these MSI-high tumors can enhance clinical practices and inform future research targeting this specific subtype of GC.
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  • * The study focused on examining tamibarotene's pharmacokinetics by analyzing blood sample concentrations from pediatric and young adult patients at various dosage levels.
  • * A population pharmacokinetic model was developed using data from 22 participants, incorporating factors like body surface area and age, and demonstrated strong predictive accuracy through various validation methods.
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Purpose: The exact incidence of and risk factors for interstitial lung disease (ILD), a serious side effect of abemaciclib, remain unknown in real-world settings. We examined the incidence of and risk factors for abemaciclib-induced ILD in patients with advanced breast cancer (ABC) in Japan.

Patients And Methods: Retrospective clinical information was collected from charts of patients with ABC who had started abemaciclib treatment at 77 participating institutions between November 30, 2018 and December 31, 2019.

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  • This study looked at two ways to treat a type of liver cancer called hepatoblastoma in kids: doing surgery right away or giving chemotherapy first and then doing surgery later.
  • They compared the results from over 500 patients to see which method worked better for survival and recovery.
  • The study showed that both methods had similar results in terms of surgery success and complications, but some patients with certain conditions did better with surgery first.
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  • The JPLT3-S study examined the effectiveness of cisplatin (CDDP) monotherapy for young children with standard-risk hepatoblastoma, aiming to reduce treatment toxicity compared to previous studies.
  • A total of 38 patients under 3 years old participated, achieving a remarkable 3-year progression-free survival rate of 93.9% and a 100% overall survival rate.
  • Despite the positive outcomes, nearly half of the patients experienced late-onset ototoxicity, highlighting a potential side effect of CDDP treatment.
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Background: Validating the expanded criteria for living donor liver transplantation for hepatocellular carcinoma using national data is highly significant. The aim of this study was to evaluate the validity of the new Japanese criteria for living donor liver transplantation for hepatocellular carcinoma patients and identify factors associated with a poor prognosis using the Japanese national data set.

Methods: The study population comprised patients who underwent living donor liver transplantation for hepatocellular carcinoma at 37 centres in Japan between 2010 and 2018.

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  • - The study assessed the BNT162b2 vaccine's impact on vascular function in 23 medical staff at Hiroshima University Hospital, focusing on endothelial function (measured by flow-mediated vasodilation, FMD) and vascular smooth muscle function (measured by nitroglycerine-induced vasodilation, NID).
  • - Results showed that FMD declined significantly two weeks after the second vaccine dose, but improved at six months, returning to baseline levels; there was no significant change in NID across the study periods.
  • - Overall, the findings suggest that while the BNT162b2 vaccine temporarily affected endothelial function, it did not influence vascular smooth muscle function and the endothelial function normalized within six months.
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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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Purpose: High-dose methotrexate therapy (HD-MTX) is a standard treatment for various malignant tumors, but approximately 1-10% of patients experience delayed MTX elimination (DME) that can induce organ damage. Glucarpidase can hydrolyze MTX and thereby lower the level of active MTX in the blood. A multicenter, open-label, phase II investigator-initiated trial (CPG2-PII study) was conducted to evaluate glucarpidase rescue therapy in Japanese patients who showed DME after HD-MTX treatment.

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Objective: We investigated the interrelationship between hyperglycemia and hypertension on cardiovascular mortality in the middle-aged and elderly people.

Methods: In this retrospective cohort study that used data from the Hiroshima Study on Glucose Metabolism and Cardiovascular Diseases, we included 16,564 participants without cardiovascular disease (mean age: 65.8 years; 6179 normoglycemic people, 3017 people with newly diagnosed type 2 diabetes, and 7368 people with prediabetes per the 75-g oral glucose tolerance test).

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Background: Non-inferiority of trifluridine/tipiracil (FTD/TPI) plus bevacizumab (BEV) to irinotecan/fluoropyrimidine plus BEV in metastatic colorectal cancer was investigated in the phase III TRUSTY study, and we conducted a phase II study of FOLFIRI (5-FU+leucovorin+irinotecan) plus zib-aflibercept (AFL) after FTD/TPI plus BEV. However, the TRUSTY study failed during the recruitment of our patients.

Objective: We present the findings of a phase II study on the efficacy of FOLFIRI plus zib-aflibercept (AFL) after FTD/TPI plus BEV, including clinical results with plasma biomarker analyses.

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Introduction: Although the standard treatment for patients with resectable early-stage non-small-cell lung cancer (NSCLC) is pulmonary lobectomy, recent clinical trials have demonstrated the efficacy of anatomical segmentectomy for small-sized early-stage NSCLC measuring ≤2 cm. Segmentectomy is gaining attention as an alternative procedure to lobectomy for early-stage NSCLC.

Patients And Methods: In January 2024, we have initiated a randomized phase III trial in Japan to confirm the noninferiority of anatomical segmentectomy to lobectomy in patients with peripheral clinical stage IA3 pure-solid NSCLC (tumor measuring >2 cm and ≤3 cm; consolidation-to-tumor ratio = 1.

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  • The TACTICS-L trial studied the combination of transarterial chemoembolization (TACE) and lenvatinib (LEN) for treating unresectable intermediate-stage hepatocellular carcinoma (HCC), aiming to improve outcomes since recurrence is common after TACE alone.
  • Patients with specific criteria were given LEN before and after TACE, with primary results showing a median progression-free survival of 28.0 months and high overall response rates (79% with 53% complete response 4 weeks post-TACE).
  • The trial included 62 participants, mostly men aged around 72, and results indicated that combining LEN with TACE could be beneficial across different patient subgroups.
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Background: The relationship between cumulative low-density lipoprotein cholesterol (LDL-C) exposure and progression of atherosclerosis remains uncertain.

Objective: The aim of this study was to determine the relationship between cumulative LDL-C level and flow-mediated vasodilation (FMD), nitroglycerine-induced vasodilation (NID) and the presence of plaque in the common carotid artery (CCA).

Methods: This was a cross-sectional study.

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  • The study explored the effectiveness of a treatment regimen called ABCP (atezolizumab, bevacizumab, carboplatin, and paclitaxel) for patients with EGFR-mutated non-small cell lung cancer (NSCLC) after failure of EGFR-tyrosine kinase inhibitors (TKIs).
  • Results from 60 patients showed a median progression-free survival (PFS) of 7.4 months and median overall survival (OS) of 23.1 months, with an overall response rate (ORR) of 55.9%.
  • However, the study did not reach its primary endpoint and indicated that PFS was notably shorter for patients with previous TKI treatment and those with brain or
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  • - The KHBO1401 study found that the combination of gemcitabine, cisplatin, and S-1 (GCS) not only improved survival rates for patients with biliary tract cancers but also resulted in a higher response rate, making it a suitable option for neoadjuvant therapy.
  • - Among 246 patients, tumor shrinkage patterns were classified into four categories based on their size changes at 100 days, with GCS showing significantly better outcomes in the categories associated with tumor shrinkage (A and B) compared to the GC treatment.
  • - Although GCS treatment led to faster and greater tumor shrinkage, with sustained responses, about 20% of patients experienced tumor regrowth after treatment,
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  • - The OCEAN study evaluated the effectiveness of osimertinib in treating radiation therapy-naive CNS metastasis in patients with mutation-positive non-small cell lung cancer (NSCLC), focusing on a cohort of previously untreated individuals.
  • - Results showed a brain metastasis response rate of approximately 76.9% and a median progression-free survival (PFS) of 22 months for CNS metastasis, indicating significant effectiveness of osimertinib in this patient group.
  • - The study reported manageable side effects, with less than 10% experiencing severe adverse events, suggesting osimertinib is a promising first-line treatment option for these patients.
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