Publications by authors named "Daijiro Harada"

Local failure of non-small cell lung cancer (NSCLC) treated with stereotactic body radiation therapy (SBRT) often occurs within 2 years and delayed local failure is uncommon. In the present study, features of late local failure (LLF; >2 years after SBRT) after SBRT were investigated and compared with those of early local failure (ELF; ≤2 years after SBRT) to explore whether these two local recurrence features have different prognostic implications. Patients who underwent SBRT for stage I-IIA NSCLC between July 2006 and March 2014 were retrospectively reviewed.

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Background/aim: For patients treated with osimertinib as first-line therapy, there have been no studies comparing both progression-free survival (PFS) and overall survival (OS) according to performance status (PS). Furthermore, no studies have examined differences in baseline genetic abnormalities between patients with poor and good PS. Therefore, we aimed to investigate differences in baseline genetic abnormalities and treatment effects between patients with poor and good PS who received osimertinib as the primary treatment.

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Background: Several patients treated with osimertinib experience progressive disease. The aim was to clarify the mechanisms underlying resistance to osimertinib.

Methods: ELUCIDATOR: A multi-centre, prospective, observational study involved chemotherapy-naive patients with advanced non-small cell lung cancer receiving osimertinib.

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Article Synopsis
  • G-CSF is used to prevent febrile neutropenia (FN) in cancer patients, but there's limited evidence on its effectiveness specifically for lung cancer.
  • Studies on non-small-cell lung cancer (NSCLC) showed some potential benefits in reducing FN incidence, while small-cell lung cancer (SCLC) showed no significant impact.
  • Overall, there is not enough data to make strong recommendations for G-CSF use in lung cancer, but it may be considered for certain NSCLC patients on specific therapies.
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The relationships between the therapeutic effects of immune checkpoint inhibitors (ICIs) and the intestinal flora have attracted increasing attention. However, the effects of oral probiotics on the efficacies of ICIs used to treat non-small-cell lung cancer (NSCLC) remain unclear. We investigated the effects of probiotics on the efficacies of ICIs in patients treated with and without chemotherapy.

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Article Synopsis
  • - The study examined the timing and effects of durvalumab therapy after concurrent chemoradiotherapy (CCRT) in patients with unresectable stage III non-small cell lung cancer (NSCLC).
  • - Conducted as a phase II clinical trial, 47 out of 50 treated patients showed a 1-year progression-free survival (PFS) rate of 75.0%, with an objective response rate of 78.7% and a median PFS of 14.2 months.
  • - The findings suggest that starting durvalumab immediately after CCRT is both effective and safe, with similar rates of serious side effects like pneumonitis to previous studies.
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Bronchoscopy is a common diagnostic procedure used to identify lung cancer. Specimens acquired through transbronchial biopsy are pivotal in the diagnosis and molecular characterization of this disease. The occurrence of benign mesothelial cells during a transbronchial biopsy (TBB) is relatively rare.

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  • - Patients with EGFR-mutated non-small-cell lung cancer (NSCLC) who receive EGFR tyrosine kinase inhibitors like osimertinib tend to have longer survival compared to those without these mutations.
  • - The ongoing phase II clinical trial is examining how effective osimertinib, combined with platinum-based chemotherapy, is for preventing progression of brain lesions in NSCLC patients with EGFR mutations who show no disease progression in the brain after treatment.
  • - The trial's main focus is on progression-free survival, while secondary goals include overall survival, treatment response rates, and safety, as well as timelines for controlling CNS symptoms and potential whole-brain irradiation.
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Background: Plant genome information is fundamental to plant research and development. Along with the increase in the number of published plant genomes, there is a need for an efficient system to retrieve various kinds of genome-related information from many plant species across plant kingdoms. Various plant databases have been developed, but no public database covers both genomic and genetic resources over a wide range of plant species.

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Background: Limited information on anticancer therapy for super-elderly patients with non-small-cell lung cancer is available. Immune checkpoint inhibitors offer long-term survival to elderly patients aged ≥65 years with non-small-cell lung cancer. However, the efficacy and safety of immune checkpoint inhibitors in more elderly patients are not well understood.

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Background: COVID-19 incidence is high in patients with cancer. The fatality rate was high for the Delta variant, necessitating infection prevention by vaccination. This study evaluated the safety of a SARS-CoV-2 vaccine in patients with advanced lung cancer receiving anticancer therapy.

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Localized malignant mesothelioma is a rare disease and little is known about its treatment strategy. We herein report a case of localized malignant pleural mesothelioma that had infiltrated into the anterior mediastinum, which was successfully treated using chemotherapy and conversion surgery. A 63-year-old man with a mediastinal tumor was referred to our hospital.

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Aims: Durvalumab (Durva) administration after chemoradiation therapy (CRT) in locally advanced non-small-cell lung cancer (NSCLC) is the standard of care, associated with relatively prolonged progression-free (PFS) and overall survival. However, pneumonitis occurs in 73.6% of Japanese patients.

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  • * Out of 14 enrolled patients, the objective response rate was 57.1%, with most patients demonstrating improved performance status after treatment. However, only 20% of patients experienced progression-free survival at one year.
  • * The findings suggest pembrolizumab is beneficial for PS 2 patients but not for those with PS 3 due to poor outcomes, with a need for careful monitoring of adverse effects like liver dysfunction.
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The impact of immune checkpoint inhibitors (ICIs) on radiation-induced enterocolitis (RIE) after palliative radiotherapy (PRT) to the bowel has remained to be fully investigated. The aim of the present study was to investigate whether ICIs affect RIE after PRT. For this purpose, 32 lesions (vertebral bone, 13; pelvic bone, 12; adrenal gland, 3; lymph node, 3; liver, 1) in 28 patients with metastatic lung cancer who were treated with both PRT involving the bowel (8-48 Gy; typically 30 Gy in 10 fractions or 20 Gy in 5 fractions) and ICIs between December 2015 and June 2021 were retrospectively reviewed.

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Background: Since 2020, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has become prevalent worldwide. In severe cases, the case fatality rate is high, and vaccine prevention is important. This study evaluated the safety of receiving SARS-CoV-2 vaccine in patients with advanced lung cancer receiving anticancer therapy.

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We reviewed the literature on oligoprogressive disease (OPD) and local ablative therapy (LAT) in patients with advanced non-small cell lung cancer (NSCLC). The frequency of OPD varies depending on its definition and is estimated to be between 15-47%. The implications of the strategy of continuing the same anticancer agents beyond progressive disease after LAT with radiation therapy for OPD are based on the concept of progression in which only a small number of lesions, not more than about four, proliferate after chemotherapy.

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Lung cancer that exhibits epidermal growth factor receptor (EGFR) gene mutation is sensitive to EGFR-tyrosine kinase inhibitors (TKIs), such as osimertinib. Receptor tyrosine kinase-like orphan receptor 1 (ROR1) may be involved in overcoming EGFR-TKI resistance. Growth inhibition, colony formation, apoptosis, and mRNA/protein levels in four osimertinib-sensitive and resistant cell lines transfected with small interfering RNA (siRNA) targeting ROR1 (siROR1) were evaluated.

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  • JME-001 is a phase II clinical trial investigating the combination of cisplatin, pemetrexed, and nivolumab as a first-line treatment for patients with malignant pleural mesothelioma (MPM) who cannot undergo surgery.
  • The study enrolled 18 patients, revealing an encouraging objective response rate of 77.8% and a high disease control rate of 94.4%, indicating the treatment's effectiveness.
  • However, there were concerns about safety, as 55.6% of the patients experienced severe adverse events, although no treatment-related deaths were reported, suggesting a need for further definitive trials to confirm these findings.
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  • Atezolizumab, when combined with either cisplatin or carboplatin plus bevacizumab and chemotherapy, is a standard treatment for advanced non-squamous non-small-cell lung cancer (nsNSCLC) aimed at improving patient outcomes.
  • This phase 2 study compared the effectiveness of two platinum-based combinations (CisPemBev vs. CarPacBev) in treatment-naïve patients and found that CisPemBev demonstrated a longer median progression-free survival (7.6 vs. 7.0 months) and overall survival (23.4 vs. 21.6 months) compared to CarPacBev.
  • Both treatment regimens were generally well tolerated, with manageable adverse events reported in
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Genome sequence analysis in higher plants began with the whole-genome sequencing of . Owing to the great advances in sequencing technologies, also known as next-generation sequencing (NGS) technologies, genomes of more than 400 plant species have been sequenced to date. Long-read sequencing technologies, together with sequence scaffolding methods, have enabled the synthesis of chromosome-level genome sequence assemblies, which has further allowed comparative analysis of the structural features of multiple plant genomes, thus elucidating the evolutionary history of plants.

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Background: In a phase I study, afatinib (30 mg/body daily) plus bevacizumab (15 mg/kg every 3 weeks) was well tolerated and showed favourable outcomes in patients with epidermal growth factor receptor (EGFR)-mutant advanced non-small-cell lung cancer. Herein, we report the 2-year progression-free survival, overall survival and safety profile of these patients.

Methods: Chemo-naïve patients with EGFR-mutant advanced non-small-cell lung cancer were enrolled.

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Background: EGFR mutations are good predictive markers of efficacy of EGFR tyrosine kinase inhibitors (EGFR-TKI), but whether comprehensive genomic analysis beyond EGFR itself with circulating tumor DNA (ctDNA) adds further predictive or prognostic value has not been clarified.

Methods: Patients with NSCLC who progressed after treatment with EGFR-TKI, and with EGFR T790 M detected by an approved companion diagnostic test (cobas ), were treated with osimertinib. Plasma samples were collected before and after treatment.

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