Publications by authors named "Tamaki Kakuwa"

Aims/introduction: A recent US Food and Drug Administration report highlighted concerns over nitrosamine (7-nitroso-3-(trifluoromethyl)-5,6,7,8-tetrahydro[1,2,4] triazolo-[4,3-a]pyrazine [NTTP]) impurities in sitagliptin, prompting investigations into its safety profile. The present study aimed to determine if the use of NTTP-contaminated sitagliptin, in comparison with other dipeptidyl peptidase-4 (DPP-4) inhibitors, is associated with an increased cancer risk.

Materials And Methods: This retrospective cohort study secondarily used the National Database of Health Insurance Claims and Specific Health Checkups of Japan, encompassing data on >120 million individuals.

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Aim: Quality of care is important to reduce disease progression, and improve both survival and quality of life. The Japan Society of Gynecologic Oncology has published treatment guidelines to promote standardized high-quality care for ovarian cancer in Japan. We developed quality indicators based on the guideline recommendations and used them on large datasets of health service use to examine the quality of ovarian cancer care.

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Background: In Japan, comprehensive cancer statistics data have been collected through national cancer registries, but these data are rarely summarized and reported in research articles.

Methods: Here, we compiled the national registry data on malignant tumors originating from gynecologic organs (ovary, corpus uteri, cervix uteri) in Japan.

Results: The number of new patients in 2019 was 13,380, 17,880, and 10,879, respectively, and the number of deaths in 2021 was 5081, 2741, and 2894, respectively.

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Background: Delay in the time to treatment initiation (TTI) may adversely affect the survival of patients, but its current status in Japan is unknown. This study aims to describe the TTI for six cancer types: lung, breast, colorectal, stomach, head and neck (H&N), and cervical. Data for this study were derived from a nationwide registry in Japan.

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Bronchial thermoplasty (BT) is an interventional endoscopic treatment for severe bronchial asthma. Some studies have shown the clinical efficacy of this intervention, but its cost-effectiveness is unclear. The aim of this study was to evaluate the cost-effectiveness of BT.

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Lung cancer immunotherapy is an effective treatment option; however, it can be hampered by adverse events, including pancreatitis, associated with excessive immune activation. Here, we report the case of a 70-year-old patient who presented with recurrent lung squamous carcinoma and was started with pembrolizumab treatment (200 mg every three weeks). The patient developed pembrolizumab-induced pancreatitis.

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Introduction: Bronchial thermoplasty (BT) is a bronchoscopic procedure that involves the delivery of thermal radiofrequency energy to the bronchial wall for treating severe asthma. It has been suggested that too many radiofrequency activations could induce serious adverse events (SAEs) at an early stage. We aimed to examine the number of radiofrequency activations at each session and early lung function changes from baseline to determine whether these are related to SAEs.

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Rheumatoid arthritis-related interstitial pneumonia with a usual interstitial pneumonia (RA-UIP) has a poor prognosis and a new treatment strategy is required. The antifibrotic agent nintedanib reduces the annual rate of decline in forced vital capacity (FVC) in idiopathic pulmonary fibrosis (IPF) patients. Recently, the potential efficacy of antifibrotic agents against chronic progressive fibrotic diseases including RA-UIP has been attracting attention.

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