Publications by authors named "Naruhiko Ichiyama"

Background: Myxoid liposarcoma, a rare type of tumor, accounts for approximately 30% of all liposarcomas. Myxoid liposarcomas harboring the FUS/CHOP fusion gene have shown promising results with trabectedin in basic research and some clinical experiments. However, the efficacy and safety of trabectedin in chemotherapy-naive soft tissue sarcomas or FUS/CHOP fusion gene-positive myxoid liposarcomas have not yet been established.

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  • Researchers studied osimertinib-resistant EGFR-mutant lung cancer to uncover the resistance mechanisms using specialized cell lines developed through exposure to the drug.
  • They found that SLC1A3, a transporter for glutamic acid, was significantly more active in resistant cells, and targeting it with specific inhibitors increased drug sensitivity.
  • The results suggest that combining osimertinib with a glutaminase inhibitor could effectively counteract resistance and improve treatment outcomes for patients with this type of lung cancer.
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Background: In Japan, the number of patients with aggressive hematological malignancies (PHMs) admitted at the palliative care unit (PCU) in their end-of-life (EOL) stage was fewer than that of patients with solid tumors due to several reasons. The assessment of patient characteristics and the methods of survival prediction among PHMs in the EOL stage are warranted.

Objectives: This study aimed to identify the current medical status and the method of survival prediction among PHMs treated at the PCU.

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A 72-year-old man with locally advanced lung squamous cell carcinoma experienced red purpura on the lower legs and hematuria when the disease progressed during definitive chemoradiotherapy. He had renal dysfunction and proteinuria. Biopsy specimens of the skin lesion and kidney revealed immunoglobulin A vasculitis.

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The unique radiological manifestation mimicking autoimmune pancreatitis caused by lung cancer metastasis to the pancreas has not previously been reported. The incidence of pancreatic secondary tumors has previously been reported to be approximately 15% in autopsy cases of malignant tumors, and it is unusual for thoracic oncologists to find that the second common primary tumor site of metastatic pancreas tumor is the lung.

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Lung cancer patients ≥75 years represent nearly 40% of all lung cancer patients and continue to increase. If elderly patients have a good performance status and adequate organ function, they can be treated the same as non-elderly patients. However, few comparative studies limited to elderly patients (≥75 years) have been conducted.

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  • ROR1, a protein overexpressed in some cancer cells, was investigated for its role in malignant mesothelioma (MM) and whether inhibiting it could affect cell growth and survival.
  • The study found that inhibiting ROR1 in three out of four MM cell lines led to reduced cell growth and increased apoptosis, while also suppressing key signaling pathways (AKT and STAT3).
  • Additionally, combining ROR1 inhibition with the chemotherapy drug pemetrexed proved effective, suggesting potential new treatment strategies for advanced MM.
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