Updated on 2022/05/23

写真a

 
YAMAGUCHI Manako
 
Organization
University Medical and Dental Hospital Perinatal Intensive Care Center Specially Appointed Assistant Professor
Title
Specially Appointed Assistant Professor
External link

Degree

  • 学士(医学) ( 2011.3   秋田大学 )

Research History

  • Niigata University   University Medical and Dental Hospital Perinatal Intensive Care Center   Specially Appointed Assistant Professor

    2019.4

Professional Memberships

  • 日本産科婦人科学会

    2013.4

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Papers

  • Proposing a molecular classification associated with hypercoagulation in ovarian clear cell carcinoma. International journal

    Ryo Tamura, Kosuke Yoshihara, Koji Matsuo, Nozomi Yachida, Ai Miyoshi, Kotaro Takahashi, Kentaro Sugino, Manako Yamaguchi, Yutaro Mori, Kazuaki Suda, Tatsuya Ishiguro, Shujiro Okuda, Teiichi Motoyama, Hirofumi Nakaoka, Akira Kikuchi, Yutaka Ueda, Ituro Inoue, Takayuki Enomoto

    Gynecologic oncology   2021.8

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    BACKGROUND: Although ovarian clear cell carcinoma (CCC) is associated with high incidence of thromboembolism, the clinicopathological and biological significance of hypercoagulable status in CCC remains unclear. MATERIALS AND METHODS: We retrospectively analyzed pretreatment D-dimer levels, thromboembolic status, and clinical outcome of 125 CCCs in the discovery set and 143 CCCs in two other independent validation sets. Next, we performed RNA sequencing of 93 CCCs and compared coagulation-related gene profiles with 2492 pan-cancer data. We investigated differences in molecular characteristics of CCC subclasses based on coagulation status. RESULTS: In the discovery dataset, D-dimer elevation above the normal range was significantly associated with shorter progression-free and overall survival, irrespective to thromboembolic status. Multivariate analysis identified D-dimer elevation and clinical stage as an independent prognostic factors. We confirmed the prognostic significance of D-dimer elevation in the validation sets. Tissue factor and IL6, which are considered key elements of cancer-induced hypercoagulation, were highly expressed in CCC than in other cancers regardless of D-dimer level. Higher activity of various oncogenic pathways was observed in CCC with compared to without D-dimer elevation. Moreover, hierarchical cluster analysis divided 57 CCCs with D-dimer elevation into immunologically hot and cold tumor subtypes. Hot tumors were characterized by enrichment of T-cell inflamed phenotype, inflammation, the epithelial-mesenchymal transition, and high serum levels of CRP, and cold tumors by enrichment of cell cycle and MYC pathways. CONCLUSIONS: CCC represents hypercoagulable disease and elevate D-dimer is a prognostic factor for decreased survival in CCC. D-dimer high CCC has distinct molecular characteristics into the inflammatory-driven pathway (hot tumor) and the immune-suppressive pathway (cold tumor). Treatment implication of our proposed molecular classification merits further investigation.

    DOI: 10.1016/j.ygyno.2021.08.009

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  • The New Era of Three-Dimensional Histoarchitecture of the Human Endometrium. International journal

    Manako Yamaguchi, Kosuke Yoshihara, Nozomi Yachida, Kazuaki Suda, Ryo Tamura, Tatsuya Ishiguro, Takayuki Enomoto

    Journal of personalized medicine   11 ( 8 )   2021.7

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    The histology of the endometrium has traditionally been established by observation of two-dimensional (2D) pathological sections. However, because human endometrial glands exhibit coiling and branching morphology, it is extremely difficult to obtain an entire image of the glands by 2D observation. In recent years, the development of three-dimensional (3D) reconstruction of serial pathological sections by computer and whole-mount imaging technology using tissue clearing methods with high-resolution fluorescence microscopy has enabled us to observe the 3D histoarchitecture of tissues. As a result, 3D imaging has revealed that human endometrial glands form a plexus network in the basalis, similar to the rhizome of grass, whereas mouse uterine glands are single branched tubular glands. This review summarizes the relevant literature on the 3D structure of mouse and human endometrium and discusses the significance of the rhizome structure in the human endometrium and the expected role of understanding the 3D tissue structure in future applications to systems biology.

    DOI: 10.3390/jpm11080713

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  • Biological significance of KRAS mutant allele expression in ovarian endometriosis. International journal

    Nozomi Yachida, Kosuke Yoshihara, Kazuaki Suda, Hirofumi Nakaoka, Haruka Ueda, Kentaro Sugino, Manako Yamaguchi, Yutaro Mori, Kaoru Yamawaki, Ryo Tamura, Tatsuya Ishiguro, Hiroaki Kase, Teiichi Motoyama, Takayuki Enomoto

    Cancer science   112 ( 5 )   2020 - 2032   2021.5

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    KRAS is the most frequently mutated in ovarian endometriosis. However, it is unclear whether the KRAS mutant allele's mRNA is expressed and plays a biological role in ovarian endometriosis. Here, we performed mutation-specific RNA in situ hybridization to evaluate mutant allele expression of KRAS p.G12V, the most frequently detected mutation in ovarian endometriosis in our previous study, in formalin-fixed paraffin-embedded tissue (FFPE) samples of ovarian endometriosis, cancer cell lines, and ovarian cancers. First, we verified that mutant or wild-type allele of KRAS were expressed in all 5 cancer cell lines and 9 ovarian cancer cases corresponding to the mutation status. Next, we applied this assay to 26 ovarian endometriosis cases, and observed mutant allele expression of KRAS p.G12V in 10 cases. Mutant or wild-type allele of KRAS were expressed in line with mutation status in 12 available endometriosis cases for which KRAS gene sequence was determined. Comparison of clinical features between ovarian endometriosis with KRAS p.G12V mutant allele expression and with KRAS wild-type showed that KRAS p.G12V mutant allele expression was significantly associated with inflammation in ovarian endometriosis. Finally, we assessed the spatial distribution of KRAS mutant allele expression in 5 endometriosis cases by performing multiregional sampling. Intratumor heterogeneity of KRAS mutant allele expression was observed in two endometriosis cases, whereas the spatial distribution of KRAS p.G12V mutation signals were diffuse and homogenous in ovarian cancer. In conclusion, evaluation of oncogene mutant expression will be useful for clarifying the biological significance of oncogene mutations in benign tumors.

    DOI: 10.1111/cas.14871

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  • Three-dimensional understanding of the morphological complexity of the human uterine endometrium. International journal

    Manako Yamaguchi, Kosuke Yoshihara, Kazuaki Suda, Hirofumi Nakaoka, Nozomi Yachida, Haruka Ueda, Kentaro Sugino, Yutaro Mori, Kaoru Yamawaki, Ryo Tamura, Tatsuya Ishiguro, Teiichi Motoyama, Yu Watanabe, Shujiro Okuda, Kazuki Tainaka, Takayuki Enomoto

    iScience   24 ( 4 )   102258 - 102258   2021.4

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    The fundamental morphology of the endometrial glands is not sufficiently understood by 2D observation because these glands have complicated winding and branching patterns. To construct a large picture of the endometrial gland structure, we performed tissue-clearing-based 3D imaging of human uterine endometrial tissue. Our 3D immunohistochemistry and layer analyses revealed that the endometrial glands form a plexus network in the stratum basalis and expand horizontally along the muscular layer, similar to the rhizome of grass. We then extended our method to assess the 3D morphology of tissue affected by adenomyosis, a representative "endometrium-related disease," and observed its 3D morphological features, including the direct invasion of endometrial glands into the myometrium and an ant colony-like network of ectopic endometrial glands within the myometrium. Thus, further understanding of the morphology of the human endometrium based on 3D analysis will lead to the identification of the pathogenesis of endometrium-related diseases.

    DOI: 10.1016/j.isci.2021.102258

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  • How Does Endometriosis Lead to Ovarian Cancer? The Molecular Mechanism of Endometriosis-Associated Ovarian Cancer Development. International journal

    Nozomi Yachida, Kosuke Yoshihara, Manako Yamaguchi, Kazuaki Suda, Ryo Tamura, Takayuki Enomoto

    Cancers   13 ( 6 )   2021.3

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    Numerous epidemiological and histopathological studies support the notion that clear cell and endometrioid carcinomas derive from ovarian endometriosis. Accordingly, these histologic types are referred to as "endometriosis-associated ovarian cancer" (EAOC). Although the uterine endometrium is also considered an origin of endometriosis, the molecular mechanism involved in transformation of the uterine endometrium to EAOC via ovarian endometriosis has not yet been clarified. Recent studies based on high-throughput sequencing technology have revealed that cancer-associated gene mutations frequently identified in EAOC may exist in the normal uterine endometrial epithelium and ovarian endometriotic epithelium. The continuum of genomic alterations from the uterine endometrium to endometriosis and EAOC has been described, though the significance of cancer-associated gene mutations in the uterine endometrium or endometriosis remains unclear. In this review, we summarize current knowledge regarding the molecular characteristics of the uterine endometrium, endometriosis, and EAOC and discuss the molecular mechanism of cancer development from the normal endometrium through endometriosis in an effort to prevent EAOC.

    DOI: 10.3390/cancers13061439

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  • Establishment of in vitro 3D spheroid cell cultivation from human gynecologic cancer tissues. International journal

    Haruka Ueda, Yutaro Mori, Kaoru Yamawaki, Tatsuya Ishiguro, Hirokazu Ohata, Ai Sato, Kentaro Sugino, Nozomi Yachida, Manako Yamaguchi, Kazuaki Suda, Ryo Tamura, Kosuke Yoshihara, Koji Okamoto, Takayuki Enomoto

    STAR protocols   2 ( 1 )   100354 - 100354   2021.3

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    Advanced-stage gynecologic cancer remains a life-threatening disease. Here, we present a protocol for establishment of stable in vitro 3D spheroid cells derived from human uterine endometrial and ovarian cancer tissues. The tumor-derived spheroid cells have cancer stem cell-related characteristics, including tumorigenesis, and can be used for biological and biochemical analyses and drug efficacy assays. Because these cells possess the biological characteristics of original human tumors, spheroid cells and spheroid-derived xenografts will have applications in personalized medicine in the future. For complete details on the use and execution of this protocol, please refer to Ishiguro et al. (2016) and Mori et al. (2019).

    DOI: 10.1016/j.xpro.2021.100354

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  • Risk factors for HPV infection and high-grade cervical disease in sexually active Japanese women. International journal

    Manako Yamaguchi, Masayuki Sekine, Sharon J B Hanley, Risa Kudo, Megumi Hara, Sosuke Adachi, Yutaka Ueda, Etsuko Miyagi, Takayuki Enomoto

    Scientific reports   11 ( 1 )   2898 - 2898   2021.2

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    In Japan, recommendations for HPV vaccines were suspended in 2013 due to unfounded safety fears. Although vaccine opponents claim modifying sexual behavior can prevent cervical cancer, no comprehensive data exist on sexual behavior and the risk of high-grade cervical disease in a Japanese population. This study investigates sexual behavior and the risk of HPV infection and cervical disease in 3968 women aged 20-41 yrs undergoing cervical screening between April 2014 and March 2016. Mean age at first intercourse was 18.4 yrs ± 2.8 and 32% of women reported ≥ 6 lifetime sexual partners. In regression analyses, number of partners was a significant risk factor for HPV infection. However, for high-grade disease (CIN2+), when HPV genotype was adjusted for, number of partners was not statistically significant. The greatest risk factor was an HPV16/18 infection (adjusted odds ratio 113.7, 95% CI: 40.8-316.9). In conclusion, we found that having an HPV16/18 infection and not sexual behavior was the most significant risk factor for high grade cervical disease in young Japanese women. These infections can be prevented by a highly effective vaccine and we recommend that the Japanese government resume proactive recommendations for the HPV vaccine immediately.

    DOI: 10.1038/s41598-021-82354-6

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  • Internet Survey of Awareness and Behavior Related to HPV Vaccination in Japan. International journal

    Risa Kudo, Masayuki Sekine, Manako Yamaguchi, Megumi Hara, Sharon J B Hanley, Yutaka Ueda, Asami Yagi, Sosuke Adachi, Megumi Kurosawa, Etsuko Miyagi, Takayuki Enomoto

    Vaccines   9 ( 2 )   2021.1

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    Recommendations for HPV vaccines were suspended in 2013 due to unfounded safety fears in Japan. We aimed to clarify the differences between vaccinated and unvaccinated females in their awareness, knowledge, and behaviors toward cervical cancer, HPV vaccination and sex. Questionnaires were administered online to women aged 16 to 20. We conducted investigations for the following: awareness, knowledge, and actions for cervical cancer, HPV vaccination, and sexual activity, as well as items related to participants' social background. The survey in 828 girls revealed three points. The first is that more than half of the surveyed Japanese girls had poor knowledge about cervical cancer screening, HPV, or HPV vaccines. The second is that those in the unvaccinated group had a particularly poor knowledge of the subject and tended to have higher sexual activity. The final is that only 0.5% of the girls experienced changes in awareness about sexual activity after vaccination. In conclusion, this is the first large-scale survey analyzing the association between HPV vaccination and sexual activity in Japanese girls. Not only do unvaccinated girls not benefit from vaccines, but they also tend to engage in high-risk sexual behavior, and thus it is even more important to provide information on the effectiveness of vaccines and the usefulness of cancer screening.

    DOI: 10.3390/vaccines9020087

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  • ARID1A protein expression is retained in ovarian endometriosis with ARID1A loss-of-function mutations: implication for the two-hit hypothesis. International journal

    Nozomi Yachida, Kosuke Yoshihara, Kazuaki Suda, Hirofumi Nakaoka, Haruka Ueda, Kentaro Sugino, Manako Yamaguchi, Yutaro Mori, Kaoru Yamawaki, Ryo Tamura, Tatsuya Ishiguro, Masanori Isobe, Teiichi Motoyama, Ituro Inoue, Takayuki Enomoto

    Scientific reports   10 ( 1 )   14260 - 14260   2020.8

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    ARID1A loss-of-function mutation accompanied by a loss of ARID1A protein expression is considered one of the most important driver events in endometriosis-associated ovarian cancer. Although our recent genomic study clarified that ARID1A loss-of-function mutations were detected in 13% of ovarian endometriosis, an association between the ARID1A mutation status and ARID1A protein expression in ovarian endometriosis remains unclear. We performed immunohistochemical staining for ARID1A in 78 ovarian endometriosis samples and 99 clear cell carcinoma samples. We revealed that not only 70 endometriosis samples without ARID1A mutations but also eight endometriosis samples with ARID1A loss-of-function mutations retained ARID1A protein expression. On the other hand, most of clear cell carcinomas with ARID1A loss-of-function mutations showed a loss of ARID1A protein expression. In particular, clear cell carcinoma samples which harbor multiple ARID1A loss-of-function mutations or both a single ARID1A loss-of-function mutation and ARID1A allelic imbalance lost ARID1A protein expression. However, ARID1A protein expression was retained in seven clear cell carcinomas with ARID1A loss-of-function mutations. These results suggest that a single ARID1A loss-of-function mutation is insufficient for ARID1A loss in ovarian endometriosis and some clear cell carcinoma. Further driver events may be needed for the malignant transformation of ovarian endometriosis with ARID1A loss-of-function mutations.

    DOI: 10.1038/s41598-020-71273-7

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  • Epidemiologic Profile of Type-Specific Human Papillomavirus Infection after Initiation of HPV Vaccination. International journal

    Masayuki Sekine, Manako Yamaguchi, Risa Kudo, Sharon J B Hanley, Megumi Hara, Sosuke Adachi, Yutaka Ueda, Etsuko Miyagi, Sayaka Ikeda, Asami Yagi, Takayuki Enomoto

    Vaccines   8 ( 3 )   2020.7

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    Organized human papillomavirus vaccination (OHPV) in Japan was introduced in 2010 for girls aged 12-16 years who were born in 1994 or later. The rate of OHPV coverage was 70-80%. However, after suspension of the government vaccination recommendation, the coverage dramatically decreased. We aim to investigate the change in prevalence of HPV infection after the initiation of HPV vaccination. We recruited females aged 20-21 years attending public cervical cancer screening from 2014 to 2017 fiscal years (April 2014 to March 2018). Residual Pap test specimens were collected for HPV testing. We compared the prevalence of HPV type-specific infection between women registered in 2014 (born in 1993-1994, including the pre-OHPV generation) and registered in 2015-2017 (born in 1994-1997, the OHPV generation). We collected 2379 specimens. The vaccination coverage figures were 30.7%, 86.6%, 88.4% and 93.7% (p < 0.01) from 2014 to 2017, respectively. The prevalence of HPV16/18 infection significantly decreased from 1.3% in 2014 to 0% in 2017 (p = 0.02). The three most prevalent types were HPV52, 16 and 56 in 2014, and HPV52, 58 and 56 in 2015-2017, respectively. HPV16 and 33 infection rates decreased. On the other hand, the HPV58 infection rate was obviously increased after OHPV from 0.3% to 2.1%. Our study demonstrates that the prevalence of HPV16/18 infection dramatically decreased and the profile of type-specific HPV infection was changed after OHPV.

    DOI: 10.3390/vaccines8030425

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  • Japan's Ongoing Crisis on HPV Vaccination. International journal

    Masayuki Sekine, Risa Kudo, Manako Yamaguchi, Sharon J B Hanley, Megumi Hara, Sosuke Adachi, Yutaka Ueda, Etsuko Miyagi, Sayaka Ikeda, Asami Yagi, Takayuki Enomoto

    Vaccines   8 ( 3 )   2020.7

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    : The Japanese government suspended proactive recommendations for the HPV vaccine in June 2013. The suspension is now in its seventh year, despite all the data pointing to the safety of the HPV vaccine. We reported a high vaccine effectiveness in the group of women vaccinated before their first intercourse (93.9%). The prevalence of cross-protected types of HPV 31/45/52 was also lower in the vaccinated group, and the vaccine effectiveness was 67.7%. Furthermore, prevalence of HPV16, 31 and 52 infection rates in the vaccinated group were obviously lower than that in the unvaccinated group, and no one had HPV18 or 45 infection in the vaccinated group. The addition of a cross-protective effect toward HPV types 31/45/52 to HPV types 16/18, which is the direct target of the bivalent HPV vaccine, may possibly prevent around 82% of invasive cervical cancer cases in Japan. With regard to the preventive effect of histological abnormalities, we also reported significant reduction in incidence of cervical intraepithelial neoplasia (CIN)3 or worse. Thus, the efficacy of the vaccine has been demonstrated for precancerous disease, and the diverse symptoms after HPV vaccination are likely functional somatic. For the future of Japanese girls, there is a need to resume the proactive recommendation of HPV vaccination and for immediate action to be taken by the Japanese government.

    DOI: 10.3390/vaccines8030362

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  • XCL1 expression correlates with CD8-positive T cells infiltration and PD-L1 expression in squamous cell carcinoma arising from mature cystic teratoma of the ovary. International journal

    Ryo Tamura, Kosuke Yoshihara, Hirofumi Nakaoka, Nozomi Yachida, Manako Yamaguchi, Kazuaki Suda, Tatsuya Ishiguro, Koji Nishino, Hiroshi Ichikawa, Keiichi Homma, Akira Kikuchi, Yutaka Ueda, Yuji Takei, Hiroyuki Fujiwara, Teiichi Motoyama, Shujiro Okuda, Toshifumi Wakai, Ituro Inoue, Takayuki Enomoto

    Oncogene   39 ( 17 )   3541 - 3554   2020.4

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    Molecular characteristics of carcinoma arising from mature cystic teratoma of the ovary (MCT) remain unclear due to its rarity. We analyzed RNA-sequencing data of 2322 pan-cancer [1378 squamous cell carcinomas (SCC), 6 adenosquamous carcinomas (ASC), and 938 adenocarcinomas (AC)] including six carcinomas arising from MCT (four SCCs, one ASC, and one AC). Hierarchical clustering and principal component analysis showed that gene expression profiles of carcinomas arising from MCT were different between each histological type and that gene expression profiles of SCCs arising MCT (MCT-SCCs) was apparently similar to those of lung SCCs. By epidermis-associated pathways activity based on gene set enrichment analysis, 1030 SCCs were divided into two groups: epidermis-signature high (head and neck, esophagus, and skin) and low (cervix, lung, and MCT). In addition to pan-SCC transcriptome analysis, cytokeratin profiling based on immunohistochemistry in the independent samples of 21 MCT-SCCs clarified that MCT-SCC dominantly expressed CK18, suggesting the origin of MCT-SCC was columnar epithelium. Subsequently, we investigated differentially expressed genes in MCT-SCCs compared with different SCCs and identified XCL1 was specifically overexpressed in MCT-SCCs. Through immunohistochemistry analysis, we identified XCL1 expression on tumor cells in 13/24 (54%) of MCT-SCCs but not in MCTs. XCL1 expression was also significantly associated with the number of tumor-infiltrating CD8-positive T cells and PD-L1 expression on tumor cells. XCL1 produced by tumor cells may induce PD1/PD-L1 interaction and dysfunction of CD8-positive T cells in tumor microenvironment. XCL1 expression may be a novel biomarker for malignant transformation of MCT into SCC and a biomarker candidate for therapeutic response to an anti-PD1/PD-L1 therapy.

    DOI: 10.1038/s41388-020-1237-0

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  • Germline and somatic mutations of homologous recombination-associated genes in Japanese ovarian cancer patients. International journal

    Kentaro Sugino, Ryo Tamura, Hirofumi Nakaoka, Nozomi Yachida, Manako Yamaguchi, Yutaro Mori, Kaoru Yamawaki, Kazuaki Suda, Tatsuya Ishiguro, Sosuke Adachi, Masanori Isobe, Masayuki Yamaguchi, Katsunori Kashima, Teiichi Motoyama, Ituro Inoue, Kosuke Yoshihara, Takayuki Enomoto

    Scientific reports   9 ( 1 )   17808 - 17808   2019.11

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    We explored the frequency of germline and somatic mutations in homologous recombination (HR)-associated genes in major histological types of ovarian cancer. We performed targeted sequencing to assess germline and somatic mutations of 16 HR-associated genes and 4 mismatch repair (MMR) genes among 207 ovarian cancer patients (50 high-grade serous carcinomas (HGSC), 99 clear cell carcinomas (CCC), 39 endometrioid carcinomas (EC), 13 mucinous carcinomas (MC), and 6 low-grade serous carcinomas (LGSC)). Germline or somatic mutations of HR-associated genes were detected in 44% of HGSC, 28% of CCC, 23% of EC, 16% of MC, and 17% of LGSC patients. The profile of HR-associated gene mutations was remarkably different among each histological type. Germline BRCA1/2 mutations were frequently detected in HGSC and were rarely observed in CCC, EC, and MC patients. ATM somatic mutation was more frequently detected in CCC (9%) and EC patients (18%) than in HGSC patients (4%). There was a positive correlation between MMR gene mutations and HR-associated gene mutations (p = 0.0072). Our findings might be useful in selection of ovarian cancer patients that should be treated with PARP inhibitors.

    DOI: 10.1038/s41598-019-54116-y

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  • Bivalent Human Papillomavirus Vaccine Effectiveness in a Japanese Population: High Vaccine-Type-Specific Effectiveness and Evidence of Cross-Protection. International journal

    Risa Kudo, Manako Yamaguchi, Masayuki Sekine, Sosuke Adachi, Yutaka Ueda, Etsuko Miyagi, Megumi Hara, Sharon J B Hanley, Takayuki Enomoto

    The Journal of infectious diseases   219 ( 3 )   382 - 390   2019.1

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    Background: Proactive recommendations for human papillomavirus (HPV) vaccines in Japan have been suspended for 5 years because of safety concerns. While no scientific evidence exists to substantiate these concerns, one reason given for not reinstating recommendations is the lack of reliable vaccine effectiveness (VE) data in a Japanese population. This study reports the VE of the bivalent HPV vaccine in Japanese women aged 20-22 years. Methods: During cervical screening between 2014 and 2016, women had Papanicolaou smears and HPV tests performed and provided data about their sexual history. Estimates of VE for vaccine-targeted HPV type 16 (HPV16) and 18 and cross-protection against other types were calculated. Results: Overall, 2197 women were tested, and 1814 were included in the analysis. Of these, 1355 (74.6%) were vaccinated, and 1295 (95.5%) completed the 3-dose schedule. In women sexually naive at vaccination, the pooled VEs against HPV16 and 18 and for HPV31, 45, and 52 were 95.5% (P < .01) and 71.9% (P < .01), respectively. When adjusted for number of sex partners and birth year, pooled VEs were 93.9% (P = .01) and 67.7% (P = .01) for HPV16 and 18 and HPV31, 45, and 52, respectively. Conclusions: The bivalent HPV vaccine is highly effective against HPV16 and 18. Furthermore, significant cross-protection against HPV31, 45, and 52 was demonstrated and sustained up to 6 years after vaccination. These findings should reassure politicians about the VE of bivalent HPV vaccine in a Japanese population.

    DOI: 10.1093/infdis/jiy516

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  • Differential misclassification between self-reported status and official HPV vaccination records in Japan: Implications for evaluating vaccine safety and effectiveness. International journal

    Manako Yamaguchi, Masayuki Sekine, Risa Kudo, Sosuke Adachi, Yutaka Ueda, Etsuko Miyagi, Megumi Hara, Sharon J B Hanley, Takayuki Enomoto

    Papillomavirus research (Amsterdam, Netherlands)   6   6 - 10   2018.12

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    Japan has no national vaccine registry and approximately 1700 municipalities manage the immunization records independently. In June 2013, proactive recommendations for the human papillomavirus (HPV) vaccine were suspended after unconfirmed reports of adverse events following immunization in the media, despite no vaccine safety signal having been raised. Furthermore, studies assessing HPV vaccine safety and effectiveness published post suspension are predominantly based on self-reported information. Our aim was to examine the accuracy of self-reported vaccination status compared with official municipal records. Participants were women aged 20-22 yrs, who were attending for cervical screening in Niigata city. Among the 1230 eligible registrants, vaccine uptake, defined as any dose, was 75.0% and 77.2% according to a self-reported questionnaire and municipal records, respectively. The accuracy rate of self-reported information was as follows: positive predictive value (PPV) was 87.7%; negative predictive value (NPV) was 54.5%; sensitivity was 85.2%; and specificity was 59.8%. The validity of self-reported information was only moderate (Kappa statistic = 0.44, 95% confidence interval 0.37-0.50). This combined with the low NPV may lead to reduced estimation of effectiveness and safety. A more reliable method, such as a national HPV vaccine registry, needs to be established for assessing HPV immunization status in Japan.

    DOI: 10.1016/j.pvr.2018.05.002

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  • 日本人若年女性のsexual activityとHPV感染、子宮頸部細胞診異常との相関

    山口 真奈子, 工藤 梨沙, 安達 聡介, 関根 正幸, 八木 麻未, 田中 佑典, 上田 豊, 宮城 悦子, 榎本 隆之

    日本癌治療学会学術集会抄録集   55回   P165 - 1   2017.10

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  • 日本人若年女性におけるHPVワクチン公費接種者のHPV感染予防効果

    工藤 梨沙, 山口 真奈子, 安達 聡介, 関根 正幸, 八木 麻未, 田中 佑典, 上田 豊, 宮城 悦子, 榎本 隆之

    日本癌治療学会学術集会抄録集   55回   PS - 6   2017.10

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  • Realistic fear of cervical cancer risk in Japan depending on birth year. International journal

    Asami Yagi, Yutaka Ueda, Tomomi Egawa-Takata, Yusuke Tanaka, Ruriko Nakae, Akiko Morimoto, Yoshito Terai, Masahide Ohmichi, Tomoyuki Ichimura, Toshiyuki Sumi, Hiromi Murata, Hidetaka Okada, Hidekatsu Nakai, Masaki Mandai, Shinya Matsuzaki, Eiji Kobayashi, Kiyoshi Yoshino, Tadashi Kimura, Junko Saito, Yumiko Hori, Eiichi Morii, Tomio Nakayama, Yukio Suzuki, Yoko Motoki, Akiko Sukegawa, Mikiko Asai-Sato, Etsuko Miyagi, Manako Yamaguchi, Risa Kudo, Sosuke Adachi, Masayuki Sekine, Takayuki Enomoto, Yorihiko Horikoshi, Tetsu Takagi, Kentaro Shimura

    Human vaccines & immunotherapeutics   13 ( 7 )   1700 - 1704   2017.7

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    OBJECTIVE: In Japan, the possible adverse events upon HPV vaccination was widely reported in the media. MHLW announced the suspension of aggressively encouraging HPV vaccination in 2013, and inoculation rate has sharply declined. The aim of the present study was estimation of future cervical cancer risk. METHODS: The latest data on vaccination rate at each age in Sakai City were first investigated. The rate of experiencing sexual intercourse at the age of 12, 13, 14, 15, 16, 17 and throughout lifetime is assumed to be 0%, 1%, 2%, 5%, 15%, 25%, and 85% respectively. The cervical cancer risk was regarded to be proportional to the relative risk of HPV infection over the lifetime. The risk in those born in 1993 whom HPV vaccination was not available yet for was defined to be 1.0000. RESULTS: The cumulative vaccination rates were 65.8% in those born in 1994, 72.7% in 1995, 72.8% in 1996, 75.7% in 1997, 75.0% in 1998, 66.8% in 1999, 4.1% in 2000, 1.5% in 2001, 0.1% in 2002, and 0.1% in 2003. The relative cervical cancer risk in those born in 1994-1999 was reduced to 0.56-0.70, however, the rate in those born in 2000-2003 was 0.98-1.0, almost the same risk as before introduction of the vaccine. DISCUSSION: The cumulative initial vaccination rates were different by the year of birth. It is confirmed that the risk of future cervical cancer differs in accordance with the year of birth. For these females, cervical cancer screening should be recommended more strongly.

    DOI: 10.1080/21645515.2017.1292190

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  • ヒトパピローマウイルス(HPV)検査におけるハイリスクスクリーニング法とジェノタイピング法による結果不一致例の検討

    工藤 梨沙, 関根 正幸, 山口 真奈子, 安達 聡介, 榎本 隆之, 上田 豊, 高田 友美, 森本 晶子, 田中 佑典, 八木 麻未

    日本産科婦人科学会雑誌   69 ( 2 )   674 - 674   2017.2

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    Language:Japanese   Publisher:(公社)日本産科婦人科学会  

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  • Project conducted in Hirakata to improve cervical cancer screening rates in 20-year-old Japanese: Influencing parents to recommend that their daughters undergo cervical cancer screening. International journal

    Asami Yagi, Yutaka Ueda, Tomomi Egawa-Takata, Yusuke Tanaka, Yoshito Terai, Masahide Ohmichi, Tomoyuki Ichimura, Toshiyuki Sumi, Hiromi Murata, Hidetaka Okada, Hidekatsu Nakai, Masaki Mandai, Shinya Matsuzaki, Eiji Kobayashi, Kiyoshi Yoshino, Tadashi Kimura, Junko Saito, Yumiko Hori, Eiichi Morii, Tomio Nakayama, Yukio Suzuki, Yoko Motoki, Akiko Sukegawa, Mikiko Asai-Sato, Etsuko Miyagi, Manako Yamaguchi, Risa Kudo, Sosuke Adachi, Masayuki Sekine, Takayuki Enomoto, Yorihiko Horikoshi, Tetsu Takagi, Kentaro Shimura

    The journal of obstetrics and gynaecology research   42 ( 12 )   1802 - 1807   2016.12

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    Language:English   Publishing type:Research paper (scientific journal)  

    AIM: In Japan, the rate of routine cervical cancer screening is quite low, and the incidence of cervical cancer has recently been increasing. Our objective was to investigate ways to effectively influence parental willingness to recommend that their 20-year-old daughters undergo cervical cancer screening. METHODS: We targeted parents whose 20-year-old daughters were living with them. In fiscal year 2013, as usual, the daughter received a reminder postcard several months after they had received a free coupon for cervical cancer screening. In fiscal year 2014, the targeted parents received a cervical cancer information leaflet, as well as a cartoon about cervical cancer to show to their daughters, with a request that they recommend to their daughter that she undergo cervical cancer screening. The subsequent screening rates for fiscal years 2013 and 2014 were compared. RESULTS: The cervical cancer screening rate of 20-year-old women whose parents received the information packet in fiscal year 2014 was significantly higher than for the women who, in fiscal year 2013, received only a simple reminder postcard (P < 0.001). As a result, the total screening rate for 20-year-old women for the whole of the 2014 fiscal year was significantly increased over 2013 (P < 0.001). CONCLUSION: For the first time, we have shown that the parents of 20-year-old daughters can be motivated to recommend that their daughters receive their first cervical cancer screening. This was achieved by sending a cervical cancer information leaflet and a cartoon about cervical cancer for these parents to show to their daughters. This method was significantly effective for improving cervical cancer screening rates.

    DOI: 10.1111/jog.13122

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  • 20-21歳女性におけるHPVワクチン接種とHPV感染率、および性活動性との相関

    関根 正幸, 山口 真奈子, 工藤 梨沙, 安達 聡介, 田中 佑典, 森本 晶子, 高田 友美, 八木 麻未, 上田 豊, 榎本 隆之

    日本婦人科腫瘍学会雑誌   34 ( 3 )   411 - 411   2016.6

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    Language:Japanese   Publisher:(公社)日本婦人科腫瘍学会  

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Awards

  • Encouragement Award

    2019   Reduction in human papillomavirus 16/18 prevalence in a population with high coverage of HPV vaccination in Japan

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  • Best Oral Presentation

    2017   AOGIN   Effectiveness of national human papillomavirus vaccination program for Japanese young women

    Manako Yamaguchi

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