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  1. Article ; Online: Trends in non-Hodgkin lymphoma mortality rate in Japan and the United States: A population-based study.

    Usui, Yoshiaki / Ito, Hidemi / Katanoda, Kota / Matsuda, Tomohiro / Maeda, Yoshinobu / Matsuo, Keitaro

    Cancer science

    2023  Volume 114, Issue 10, Page(s) 4073–4080

    Abstract: Characterizing trends in mortality rates with consideration of trends in incidence rates at the population level could help identify unmet needs in public health and provide essential indicators of cancer control. In the late 20th century, the arrival of ...

    Abstract Characterizing trends in mortality rates with consideration of trends in incidence rates at the population level could help identify unmet needs in public health and provide essential indicators of cancer control. In the late 20th century, the arrival of the first molecular targeted agent, rituximab, for non-Hodgkin lymphoma (NHL) led to a paradigm shift in NHL treatment. However, the public health impact of this arrival has not been fully clarified. Here, we evaluated trends in the mortality and incidence rates of NHL in Japan and the United States. Age-standardized rates of mortality reversed after the introduction of rituximab, around 2000, beginning to decline significantly with annual percent changes (95% confidence interval) of -2.6% (-3.6% to -1.6%) in Japan and - 3.9% (-4.2% to -3.5%) in the United States. Despite an increase in incidence, the mortality in all age groups weakened the upward trends or decreased in both countries. From a long-term perspective, the trends in mortality rates differed between the countries. In the United States, the mortality rate has declined continuously since the introduction of rituximab, with a declining incidence rate. In contrast, in Japan, the mortality rate stopped declining and the incidence rate increased remarkably. The introduction of rituximab has had a substantial impact at the population level across a wide range of individuals. To reduce the disease burden in terms of mortality, elucidating risk factors that lead to a decreasing incidence rate is warranted for NHL, as well as further development of novel treatments.
    Language English
    Publishing date 2023-08-18
    Publishing country England
    Document type Journal Article
    ZDB-ID 2115647-5
    ISSN 1349-7006 ; 1349-7006
    ISSN (online) 1349-7006
    ISSN 1349-7006
    DOI 10.1111/cas.15926
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: A Century of Change: Unraveling the Impact of Socioeconomic/Historical Milestones on Age at Menarche and Other Female Reproductive Factors in Japan.

    Iwase, Madoka / Taniyama, Yukari / Koyanagi, Yuriko N / Kasugai, Yumiko / Oze, Isao / Masuda, Norikazu / Ito, Hidemi / Matsuo, Keitaro

    Journal of epidemiology

    2024  

    Abstract: Background: Reproductive factors such as age at menarche are known to be associated with disease risk, but data on trends in these factors in Japan are limited. In this study, we investigated secular trends in reproductive factors and explored their ... ...

    Abstract Background: Reproductive factors such as age at menarche are known to be associated with disease risk, but data on trends in these factors in Japan are limited. In this study, we investigated secular trends in reproductive factors and explored their potential association with socioeconomic and historical events.
    Methods: We conducted a retrospective analysis of 62,005 Japanese women born between 1890 and 1991 using a survey conducted over 25 years. Trends in reproductive factors were analyzed using linear and joinpoint regression models, and their associations with major historical events involving Japan were evaluated.
    Results: We found that the age at menarche showed a significant downward trend (P-value<0.001) over the century. Three joinpoints were identified, in 1932 (15.23 years old), 1946 (13.48 years old), and 1959 (12.71 years old), which indicated that average age at menarche decreased by approximately 0.8% per year between 1932 and 1946, and then by 0.4% per year between 1946 and 1959, both of which were statistically significant. However, after 1959, age of menarche remained stable. Analyses of other reproductive factors found significant changes, including a decrease in parity and the number of babies breastfed, and an increase in age at first birth.
    Conclusion: Age at menarche showed a long-term downward trend in Japan, with significant change points in annual percent change. Other factors showed secular changes in trends as well. These change points were observed at the same time as historical events, namely wars and economic development, suggesting that socioeconomic and environmental changes at the population level affect reproductive factors in females.
    Language English
    Publishing date 2024-01-06
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 1442118-5
    ISSN 1349-9092 ; 0917-5040
    ISSN (online) 1349-9092
    ISSN 0917-5040
    DOI 10.2188/jea.JE20230155
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Confounding in epidemiological studies on assessment of the impact of genetic factors on disease risk: the problem of redundant adjustment.

    Kasugai, Yumiko / Oze, Isao / Koyanagi, Yuriko N / Taniyama, Yukari / Ito, Hidemi / Imoto, Issei / Matsuo, Keitaro

    Journal of epidemiology

    2024  

    Language English
    Publishing date 2024-02-24
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 1442118-5
    ISSN 1349-9092 ; 0917-5040
    ISSN (online) 1349-9092
    ISSN 0917-5040
    DOI 10.2188/jea.JE20230277
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Trends in the incidence of head and neck cancer by subsite between 1993 and 2015 in Japan.

    Kawakita, Daisuke / Oze, Isao / Iwasaki, Shinichi / Matsuda, Tomohiro / Matsuo, Keitaro / Ito, Hidemi

    Cancer medicine

    2022  Volume 11, Issue 6, Page(s) 1553–1560

    Abstract: Background: Tobacco use and alcohol consumption are still important risk factors for head and neck cancer (HNC) in developing countries, even though decreasing in tobacco prevalence. Recently, an increased incidence of oropharyngeal cancer due to human ... ...

    Abstract Background: Tobacco use and alcohol consumption are still important risk factors for head and neck cancer (HNC) in developing countries, even though decreasing in tobacco prevalence. Recently, an increased incidence of oropharyngeal cancer due to human papilloma virus (HPV) infection has attracted attention in advanced countries, including the United States and Europe. However, few studies have evaluated trends in the incidence of HNC by subsite in Japan.
    Methods: Accordingly, we evaluated these trends in Japan using data from population-based cancer registries. We compiled population-based incidence data from the Monitoring of Cancer Incidence in Japan Project, based on data from 19 population-based cancer registries. Number of incident cases and age-standardized incidence rates of HNC were estimated by subsite, namely lip, oral cavity, salivary glands, nasopharynx, oropharynx, hypopharynx, larynx, nasal and paranasal cavity, middle ear and NOS. Trends in agestandardized incidence rates were characterized using the Joinpoint analysis.
    Results: Among both sexes, oral cavity cancer, salivary gland cancer, and oropharyngeal cancer showed an upward trend (oral cavity: annual percent change (APC) 1.2% for men and APC 1.9% for women; salivary gland: APC 2.2% for men and APC 3.1% for women; oropharynx: APC 5.0% for men and APC 7.6% for women). Additionally, hypopharyngeal cancer showed an upward trend for men (APC 4.1%), and nasopharyngeal cancer and laryngeal cancer showed a downward trend for men (nasopharynx: APC -2.7%; larynx: -1.1%).
    Conclusions: These findings will assist in focusing on the individual prevention of HNC.
    MeSH term(s) Female ; Head and Neck Neoplasms/epidemiology ; Humans ; Incidence ; Japan/epidemiology ; Male ; Nasopharyngeal Neoplasms ; Oropharyngeal Neoplasms/epidemiology ; Papillomavirus Infections/epidemiology ; Registries ; United States
    Language English
    Publishing date 2022-01-14
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2659751-2
    ISSN 2045-7634 ; 2045-7634
    ISSN (online) 2045-7634
    ISSN 2045-7634
    DOI 10.1002/cam4.4539
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: The Heterogeneous Impact of Prediagnostic Folate Intake for Fluorouracil-Containing Induction Chemotherapy for Head and Neck Cancer.

    Sawabe, Michi / Kawakita, Daisuke / Oze, Isao / Iwasaki, Shinichi / Hasegawa, Yasuhisa / Murakami, Shingo / Ito, Hidemi / Hanai, Nobuhiro / Matsuo, Keitaro

    Cancers

    2023  Volume 15, Issue 21

    Abstract: Fluorouracil (FU) exerts its antitumor activity by inhibiting folate-mediated one-carbon metabolism. Evidence that folate may play a role in the carcinogenic process via folate-mediated one-carbon metabolism has given rise to the hypothesis that pre- ... ...

    Abstract Fluorouracil (FU) exerts its antitumor activity by inhibiting folate-mediated one-carbon metabolism. Evidence that folate may play a role in the carcinogenic process via folate-mediated one-carbon metabolism has given rise to the hypothesis that pre-diagnostic folate intake may induce heterogeneous chemosensitivity to FU-containing induction chemotherapy (IC) in head and neck cancer. To assess this hypothesis, we conducted a cohort study to investigate whether the association between prediagnostic dietary folate intake and cancer survival differed between treatment regimens with and without FU-containing IC in 504 cases of locally advanced (stage III/IV) HNSCC, using an epidemiologic database combined with clinical data. In total, 240 patients were treated with FU-containing IC followed by definitive treatment, and 264 patients were treated with definitive treatment alone. Definitive treatment is defined as (1) the surgical excision of a tumor with clear margins, with or without neck lymph node dissection; or (2) radiotherapy with or without chemotherapy. In the overall cohort of the FU-containing IC group, a higher folate intake was significantly associated with better overall survival (adjusted hazard ratios (HRs) for the highest compared to the lowest folate tertiles (HR
    Language English
    Publishing date 2023-10-26
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2527080-1
    ISSN 2072-6694
    ISSN 2072-6694
    DOI 10.3390/cancers15215150
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Trends of travel burdens to access cancer care among children with cancer: analysis of a population-based cancer registry data in Aichi, Japan.

    Tsutsui, Anna / Ando, Natsumiko / Taniyama, Yukari / Fujimaki, Takako / Kawaura, Masanori / Matsuo, Keitaro / Ito, Hidemi / Ohno, Yuko

    Nagoya journal of medical science

    2023  Volume 85, Issue 3, Page(s) 542–554

    Abstract: Centralization of childhood cancer treatment in specialized hospitals is necessary for quality treatment and care, but imposes a time and cost burden for patients and their families. We investigated the 20-year trend in the patients' car travel burden to ...

    Abstract Centralization of childhood cancer treatment in specialized hospitals is necessary for quality treatment and care, but imposes a time and cost burden for patients and their families. We investigated the 20-year trend in the patients' car travel burden to reach cancer-care hospitals in Aichi Prefecture, Japan. From the Aichi population-based cancer registry data, 1,741 cases diagnosed in 1998-2017 under 15 years of age were extracted and assigned to three treatment groups: invasive treatment (n = 697), radiotherapy (n = 371), or chemotherapy groups (n = 1,462), allowing for duplicate assignment. Their travels to access each treatment hospital were estimated and summarized as the estimated travel times (ETT), estimated travel distances (ETD), and direct distances (DD). The ETTs were compared using the Brunner-Munzel test. The average cases per year for each hospital were plotted. The annual trends during 1998-2017 on ETT, ETD, and DD were investigated using Joinpoint regression models. The ETTs were 0.38-0.45 hours on median for three periods (1998-2005, 2006-2012, and 2013-2017) in three treatment groups and increased by 0.02-0.07 hours from 2006-2012 to 2013-2017, with a statistically significant difference in the radiotherapy group (0.07 hours,
    MeSH term(s) Humans ; Child ; Japan/epidemiology ; Routinely Collected Health Data ; Neoplasms/epidemiology ; Neoplasms/therapy ; Hospitals ; Time Factors ; Health Services Accessibility
    Language English
    Publishing date 2023-09-27
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 193148-9
    ISSN 2186-3326 ; 0027-7622
    ISSN (online) 2186-3326
    ISSN 0027-7622
    DOI 10.18999/nagjms.85.3.542
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: [Geographic information in National Cancer Registry data: Overseas examples and challenges in Japan].

    Katanoda, Kota / Ito, Hidemi / Ito, Yuri / Katayama, Kayoko / Nishino, Yoshikazu / Tsutsui, Anna / Togawa, Kayo / Tanaka, Hirokazu / Ohno, Yuko / Nakaya, Tomoki

    Nihon koshu eisei zasshi] Japanese journal of public health

    2023  Volume 70, Issue 3, Page(s) 163–170

    Abstract: Worldwide, research based on geographic information of official statistical data, including cancer registries, is utilized for cancer control and public health policies. The National Cancer Registry of Japan was launched in 2016, making it possible to ... ...

    Abstract Worldwide, research based on geographic information of official statistical data, including cancer registries, is utilized for cancer control and public health policies. The National Cancer Registry of Japan was launched in 2016, making it possible to use data on cancer incidence systematically. Given the nature of this comprehensive survey, the usefulness of the National Cancer Registry would be further enhanced when it is utilized at small-regional levels, such as in municipalities or even smaller geographical units. It is essential to maintain a balance between privacy protection and data usability. Currently, the national and prefectural councils determine the availability of the data from the National Cancer Registry at the small-regional level on an individual application basis. Under this framework, use of the data is often restricted or declined. This paper showcases three model countries where geographic information obtained from cancer registry data are widely utilized: the United States, Canada, and the United Kingdom. It further discusses measures to ensure that data are effectively used, without compromising data privacy. In the three countries, data-providing systems have been established to compile the necessary data from the cancer registry and other linked databases, in accordance with the purpose of use. The relationships between healthcare access and various outcomes are elaborately examined at the small-regional level. In Japan, similar utilization of data has not been fully implemented, and there remain many hurdles to the application of the data use. For the National Cancer Registry to promote research and further enhance cancer control, it is necessary to establish a system that enables effective and safe utilization of the data from the National Cancer Registry, including linkage with other data and on-site use.
    MeSH term(s) Humans ; United States ; Japan/epidemiology ; Registries ; Neoplasms/epidemiology ; Neoplasms/prevention & control ; Privacy ; Health Services Accessibility
    Language Japanese
    Publishing date 2023-02-10
    Publishing country Japan
    Document type English Abstract ; Journal Article
    ZDB-ID 45044-3
    ISSN 0546-1766
    ISSN 0546-1766
    DOI 10.11236/jph.22-093
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Cumulative cigarette tar exposure and lung cancer risk among Japanese smokers.

    Shimatani, Keiichi / Ito, Hidemi / Matsuo, Keitaro / Tajima, Kazuo / Takezaki, Toshiro

    Japanese journal of clinical oncology

    2020  Volume 50, Issue 9, Page(s) 1009–1017

    Abstract: Objective: Tar concentration in cigarette brands is chronologically decreasing in the USA and Japan. However, studies investigating lung cancer risk with cumulative tar exposure in Western and Asian countries are insufficient. To investigate the risk of ...

    Abstract Objective: Tar concentration in cigarette brands is chronologically decreasing in the USA and Japan. However, studies investigating lung cancer risk with cumulative tar exposure in Western and Asian countries are insufficient. To investigate the risk of lung cancer with cumulative cigarette tar exposure, we conducted a case-control study among Japanese current smokers.
    Methods: This study used data from the US-Japan lung cancer joint study in 1993-1998. A total of 282 subjects with histologically confirmed lung cancer and 162 hospital and 227 community controls were included in the study, and two control groups were combined. The information regarding tar concentration was obtained from the published documents and additional estimation using the equation of regression. Cumulative tar concentration was calculated by multiplying the annual value of brand-specific tar concentration by years of smoking. The odds ratios and 95% confidence intervals for lung cancer with cumulative tar exposure were estimated using a logistic model.
    Results: The odds ratios for lung cancer with both lower (1-59.8 × 105 mg) and higher (>59.8 × 105 mg) total cumulative tar exposure were statistically significant (3.81, 2.23-6.50 and 11.64, 6.56-20.67, respectively) with increasing trend (P < 0.001). The stratification analysis showed higher odds ratios in subjects with higher cumulative tar exposure regardless of inhalation, duration of smoking filtered cigarettes and histological type.
    Conclusions: This study showed that cumulative tar exposure is a dose-dependent indicator for lung cancer risk, and low-tar exposure was still associated with increased cancer risk.
    MeSH term(s) Adult ; Aged ; Aged, 80 and over ; Case-Control Studies ; Female ; Humans ; Japan ; Lung Neoplasms/etiology ; Lung Neoplasms/pathology ; Male ; Middle Aged ; Risk Factors ; Smokers/statistics & numerical data ; Smoking/adverse effects ; Surveys and Questionnaires ; Tars/adverse effects
    Chemical Substances Tars ; tobacco tar
    Language English
    Publishing date 2020-06-16
    Publishing country England
    Document type Journal Article
    ZDB-ID 190978-2
    ISSN 1465-3621 ; 0368-2811
    ISSN (online) 1465-3621
    ISSN 0368-2811
    DOI 10.1093/jjco/hyaa083
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: A Dose-Response Meta-analysis of Coffee Consumption and Colorectal Cancer Risk in the Japanese Population: Application of a Cubic-Spline Model.

    Horisaki, Ken / Takahashi, Kunihiko / Ito, Hidemi / Matsui, Shigeyuki

    Journal of epidemiology

    2018  Volume 28, Issue 12, Page(s) 503–509

    Abstract: Background: A recent meta-analysis compared the relative risks of colorectal cancer between the highest and lowest levels of coffee consumption in the Japanese population. However, this analysis did not define the risks with respect to specific exposure ...

    Abstract Background: A recent meta-analysis compared the relative risks of colorectal cancer between the highest and lowest levels of coffee consumption in the Japanese population. However, this analysis did not define the risks with respect to specific exposure values when considering levels of coffee consumption per day in the study population.
    Methods: We conducted a two-stage random-effects dose-response meta-analysis of the association between coffee consumption and colorectal cancer among the Japanese. This was performed by modeling coffee consumption using restricted cubic splines to be able to examine a potential nonlinear relation.
    Results: We identified a total of 26 studies from seven articles, which were distributed separately according to sex and colon/rectum cancers. Data from 14 cohort studies showed that the pooled relative risks for colorectal cancers were less than 1.0 in cases with coffee consumption of 1-3 cups/day and 1.0 in cases with consumption of 4 cups/day or more, although these results were not statistically significant. Data from 12 case-control studies showed that the pooled odds ratios for cancer risk were significantly less than 1.0 in cases with coffee consumption of 1-6 cups/day.
    Conclusions: Findings from this meta-analysis indicate that moderate coffee consumption may not be associated or may be weakly inversely associated with the risk of colorectal cancer in the Japanese population.
    MeSH term(s) Case-Control Studies ; Coffee ; Colorectal Neoplasms/epidemiology ; Dose-Response Relationship, Drug ; Humans ; Japan/epidemiology ; Models, Statistical ; Risk Factors
    Chemical Substances Coffee
    Language English
    Publishing date 2018-06-02
    Publishing country Japan
    Document type Journal Article ; Meta-Analysis
    ZDB-ID 1442118-5
    ISSN 1349-9092 ; 0917-5040
    ISSN (online) 1349-9092
    ISSN 0917-5040
    DOI 10.2188/jea.JE20170201
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Molecular epidemiology, and possible real-world applications in breast cancer.

    Ito, Hidemi / Matsuo, Keitaro

    Breast cancer (Tokyo, Japan)

    2015  Volume 23, Issue 1, Page(s) 33–38

    Abstract: Gene-environment interaction, a key idea in molecular epidemiology, has enabled the development of personalized medicine. This concept includes personalized prevention. While genome-wide association studies have identified a number of genetic ... ...

    Abstract Gene-environment interaction, a key idea in molecular epidemiology, has enabled the development of personalized medicine. This concept includes personalized prevention. While genome-wide association studies have identified a number of genetic susceptibility loci in breast cancer risk, however, the application of this knowledge to practical prevention is still underway. Here, we briefly review the history of molecular epidemiology and its progress in breast cancer epidemiology. We then introduce our experience with the trial combination of GWAS-identified loci and well-established lifestyle and reproductive risk factors in the risk prediction of breast cancer. Finally, we report our exploration of the cumulative risk of breast cancer based on this risk prediction model as a potential tool for individual risk communication, including genetic risk factors and gene-environment interaction with obesity.
    MeSH term(s) Breast Neoplasms/epidemiology ; Breast Neoplasms/genetics ; Female ; Gene-Environment Interaction ; Genetic Predisposition to Disease ; Genome-Wide Association Study ; Humans ; Molecular Epidemiology ; Obesity/epidemiology ; Risk Factors
    Language English
    Publishing date 2015-04-11
    Publishing country Japan
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2052429-8
    ISSN 1880-4233 ; 1340-6868
    ISSN (online) 1880-4233
    ISSN 1340-6868
    DOI 10.1007/s12282-015-0609-8
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