Publications by authors named "Keisei Taku"

Purpose: This study evaluated the impact of renal function impairment on long-term survival outcomes and adjuvant therapy in patients with pancreatic cancer undergoing pancreaticoduodenectomy (PD).

Methods: In this study, 264 patients who underwent PD for pancreatic head cancer between 2011 and 2021 were retrospectively analyzed. The patients were subsequently categorized into three groups according to the estimated glomerular filtration rate: normal group (> 90 mL/min/1.

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Primary breast angiosarcoma is an extremely rare disease with a poor prognosis. Primary angiosarcoma is distinct from secondary angiosarcoma, which usually occurs in patients who have been previously treated for breast cancer. The low incidence of primary breast angiosarcoma has hindered the elucidation of its etiology and potential therapies.

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Article Synopsis
  • Small-cell carcinoma of the prostate has a poor prognosis, making treatment options uncertain for advanced cases.
  • A 68-year-old man with prostate cancer experienced disease progression despite initial treatments; however, a biopsy confirmed small-cell carcinoma after he developed enlarged lymph nodes.
  • Treatment with a combination of chemotherapy and a PARP-2 inhibitor, olaparib, led to partial remission for 8 months, suggesting that PARP-2 inhibition could enhance survival in these patients.
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A 66-year-old man with epigastric pain was admitted to our hospital for further evaluation of a pancreatic mass, as indicated on transabdominal ultrasonography performed by his family doctor. Using various imaging modalities, the 22-mm tumor was diagnosed as a cystic tumor with hemorrhagic necrosis. The tumor diameter reduced to 11mm over the course of 1 month.

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Background: Trastuzumab with cisplatin and fluoropyrimidines improves overall survival (OS) in patients with HER2-positive advanced gastric cancer (AGC). S-1 plus oxaliplatin (SOX) is one of the standard regimens for HER2-negative AGC in Japan. However, few studies have evaluated trastuzumab combined with SOX in patients with HER2-positive AGC.

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A 65-year-old woman who had been diagnosed with dermatomyositis presented to the hospital with a small bowel mass. She had tested positive for fecal occult blood test and anemia at a medical checkup;therefore, computerized tomography (CT) was performed at the previous hospital and it had revealed thickening of the intestinal wall. Abdominal contrast-enhanced CT, single-balloon assisted enteroscopy, and biopsy led to a diagnosis of poorly differentiated jejunal adenocarcinoma.

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Article Synopsis
  • Nivolumab, an anti-PD-1 therapy, shows improved overall survival in Japanese patients with unresectable advanced G/GEJ cancer compared to placebo in the ATTRACTION-2 trial.
  • The analysis involved 226 Japanese patients, revealing a median overall survival of 5.4 months for nivolumab versus 3.6 months for placebo, with a lower risk of death in the nivolumab group.
  • Serious adverse events were comparably low in both treatment groups, and ongoing studies aim to further investigate the effects of nivolumab in patients previously treated with ramucirumab.
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Purpose: Although oxaliplatin 130 mg/m every 3 weeks was approved for advanced gastric cancer in Japan, data regarding S-1 plus oxaliplatin 130 mg/m (SOX130) are limited in Japanese patients with advanced gastric cancer. We investigated the feasibility and safety of SOX130 in Japanese patients with advanced gastric cancer.

Methods: Patients with unresectable or recurrent gastric adenocarcinoma, no previous chemotherapy, and Eastern Cooperative Oncology Group Performance Status of 0-1 were treated with SOX130.

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Background: Five-weekly S-1 plus cisplatin (SP) therapy is the standard care for advanced gastric or esophagogastric junction cancer (GC/EGJC) in East Asia. However, its efficacy and safety when combined with trastuzumab therapy for human epidermal growth factor receptor 2 (HER2)-positive advanced GC/EGJC remains unclear.

Methods: Patients received 5-weekly SP therapy (S-1 at 40-60 mg twice daily for 21 days plus cisplatin at 60 mg/m on day 8, every 5 weeks) plus trastuzumab therapy (first dose of 8 mg/kg, then 6 mg/kg every 3 weeks).

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Purpose: Chemotherapy-induced neutropenia (CIN) is a common side effect of chemotherapy and an important dose-limiting factor. However, an association between CIN development and longer survival was recently reported in several solid cancers. In the present study, we aimed to assess whether CIN could be a prognostic factor and clarify other prognostic factors for patients with metastatic pancreatic cancer.

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Gastric cancer patients with main portal vein tumor thrombus usually have a short survival time, owing to its aggressive behavior. Herein, we report a long-surviving case of gastric cancer with main portal vein tumor thrombus. A 78-year-old man presenting with anorexia and body weight loss was diagnosed with gastric cancer.

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The efficacy of cetuximab correlates with the severity of skin toxicity, although its onset may vary. The AIM of this retrospective study was to investigate the optimal observation period for skin rash as a predictor of the efficacy of cetuximab plus irinotecan. The subjects comprised 33 patients with KRAS wild-type metastatic colorectal cancer (mCRC) who had received prior chemotherapy with fluorouracil, irinotecan and oxaliplatin.

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Background: Neutropenia is one of the most important dose-limiting toxicities of docetaxel. Docetaxel is metabolized by cytochrome P450 3A4 (CYP3A4). Clarithromycin, a potent inhibitor of CYP3A4, is occasionally used in combination with docetaxel.

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Tivozanib is a potent and selective inhibitor of vascular endothelial growth factor receptor (VEGFR) tyrosine kinases. A previous clinical trial in the EU and USA indicated that tivozanib at the maximum tolerated dose of 1.5 mg/day showed an antitumor activity in patients with renal cell carcinoma.

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Background. Oral intake of many patients with locally advanced head and neck cancer (LAHNC) decrease during chemoradiotherapy (CRT). Although prophylactic percutaneous endoscopic gastrostomy (PEG) is recommended, not a few patients complete CRT without using PEG tube.

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Background: An oxaliplatin-based regimen as the adjuvant treatment for stage III colon cancer demonstrated a survival advantage over fluorouracil (FU) and leucovorin (LV) in the MOSAIC and NSABP C-07 trials. For adjuvant treatment after the resection of metastases from colorectal cancer), active chemotherapy regimens such as FOLFOX are recommended. However, the safety data of FOLFOX are insufficient for its use after metastasectomy of colorectal cancer in Japanese patients.

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Background: Although S-1 plus cisplatin (SP) therapy is recognized as the standard treatment for advanced gastric cancer (AGC) in Japan, its safety and efficacy in elderly patients have not been investigated sufficiently.

Methods: We retrospectively reviewed the data of 58 patients with AGC selected from 82 consecutive patients who were ≥70 years old and were treated with SP or S-1 monotherapy as the first-line therapy. In SP, S-1 (40 mg/m(2), bid) was administered for 3 weeks and cisplatin (60 mg/m(2)) on day 8, every 5 weeks.

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Purpose: The primary objective of this Phase I study was to assess the safety and tolerability of the vascular endothelial growth factor signalling inhibitor cediranib in combination with cisplatin plus an oral fluoropyrimidine, in Japanese patients with previously untreated advanced gastric cancer.

Methods: Patients received continuous, once-daily oral doses of cediranib 20 mg in combination with either cisplatin (60 mg/m(2) iv day 1) plus S-1 (40-60 mg bid, days 1-21) every 5 weeks for a maximum of eight cycles [Arm A]; or cisplatin (80 mg/m(2) iv, day 1) plus capecitabine (1,000 mg/m(2) bid, days 1-14) every 3 weeks for a maximum of six cycles [Arm B]. In both arms, the assessment period for dose-limiting toxicities (DLTs) was the first 21 days of cycle 1.

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Background: Leptomeningeal carcinomatosis (LMC) is a rare but devastating complication of gastric cancer.

Methods: The subjects were 12 gastric cancer patients who were diagnosed as having LMC at the Shizuoka Cancer Center between October 2002 and March 2009. We conducted a retrospective survey of the medical records of the study subjects and collected data on the clinical features, treatment modalities employed/outcomes, and survival of the patients.

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Purpose: A single 3 mg or 40 μg/kg intravenous dose of granisetron combined with dexamethasone is routinely used in several countries, although the antiemetic guidelines have recommended granisetron at the dose of 1 mg or 10 μg/kg. A randomized, multicenter trial was conducted to determine the optimal intravenous granisetron dose, 1 or 3 mg, in cancer patients receiving emetogenic chemotherapy.

Methods: We enrolled 365 patients and randomly assigned them to receive intravenous granisetron 3 mg (3-mg group) or 1 mg (1-mg group), combined with dexamethasone at an adequate dose fixed as per the emetic risk category.

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Background: Although concurrent chemoradiotherapy (CRT) is a standard treatment for esophageal cancer invading adjacent structures (T4-EC), arterio-esophageal fistula (AEF) occurs occasionally as a critical adverse event of T4-EC with CRT. The frequency, clinical course, and risk factors of AEF related to CRT are not well known.

Methods: We retrospectively analyzed 48 patients with T4-EC invasion of the aorta who were treated with 5-fluorouracil, cisplatin, and concurrent radiotherapy at our institution between September 2002 and April 2009.

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Background: Although S-1 is effective against advanced gastric cancer (AGC), its efficacy in elderly patients has not yet been investigated sufficiently. We assessed the efficacy and safety of S-1 monotherapy in elderly patients with AGC.

Methods: We conducted a retrospective review of the data of 153 patients with unresectable/recurrent gastric adenocarcinoma who received S-1 monotherapy as first-line chemotherapy at our institution.

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Objectives: Peritoneal metastasis is one of the major sites of disease progression of pancreatic cancer. There have been few trials in the second-line setting after gemcitabine failure because patients can hardly be candidates for chemotherapy after failure in the first-line chemotherapy, especially those with malignant ascites. The safety and efficacy of weekly paclitaxel therapy was evaluated for pancreatic cancer patients with malignant ascites in this retrospective study.

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Objective: S-1 plus cisplatin is standard treatment for advanced gastric cancer in Japan. Triplet therapy with docetaxel, cisplatin and fluoropyrimidine showed a survival benefit over doublet therapy, but was associated with substantial toxicities. We investigated the maximum tolerated dose of combination chemotherapy with divided-dose docetaxel added to standard-dose S-1 plus cisplatin in advanced gastric cancer patients.

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