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Kawai M, Ohtani S, Iwasaki M, Yamamoto S, Takamatsu K, Okamura H, Arai M, Nomura T, Ozaki S, Shibata KI, Akabane A, Motoi F, Yamauchi C, Yamamoto Y, Iwata H, Saji S. The Japanese Breast Cancer Society clinical practice guidelines for epidemiology and prevention of breast cancer, 2022 edition. Breast Cancer 2024; 31:166-178. [PMID: 38147174 PMCID: PMC10902093 DOI: 10.1007/s12282-023-01531-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 11/27/2023] [Indexed: 12/27/2023]
Abstract
The Japanese Breast Cancer Society Clinical Practice Guidelines for Epidemiology and Prevention of Breast Cancer, 2022 Edition.
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Affiliation(s)
- Masaaki Kawai
- Department of Surgery I, Yamagata University, Yamagata, Japan.
| | | | - Motoki Iwasaki
- Division of Epidemiology, National Cancer Center Institute for Cancer Control, Tokyo, Japan
| | | | - Kiyoshi Takamatsu
- Department of Obstetrics and Gynecology, Tokyo Dental College Ichikawa General Hospital, Ichikawa, Japan
| | - Hitoshi Okamura
- Department of Psychosocial Rehabilitation, Graduate School of Biomedical and Health Sciences, Hiroshima University, Higashi-Hiroshima, Japan
| | - Masami Arai
- Department of Clinical Genetics, Juntendo University, Graduate School of Medicine, Tokyo, Japan
| | - Tsunehisa Nomura
- Department of Breast and Thyroid Surgery, Kawasaki Medical School, Matsushima, Kurashiki, Japan
| | - Shinji Ozaki
- Department of Breast Surgery, Hiroshima Prefectural Hospital, Hiroshima, Japan
| | | | - Ayaka Akabane
- Department of Surgery I, Yamagata University, Yamagata, Japan
| | - Fuyuhiko Motoi
- Department of Surgery I, Yamagata University, Yamagata, Japan
| | - Chikako Yamauchi
- Department of Radiation Oncology, Shiga General Hospital, Moriyama, Moriyama-Shi, Shiga, Japan
| | - Yutaka Yamamoto
- Department of Breast and Endocrine Surgery, Kumamoto University Hospital, Kumamoto, Japan
| | - Hiroji Iwata
- Department of Breast Oncology, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Shigehira Saji
- Department of Medical Oncology, Fukushima Medical University, Fukushima, Japan
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Jia L, Lv W, Liang L, Ma Y, Ma X, Zhang S, Zhao Y. The Causal Effect of Reproductive Factors on Breast Cancer: A Two-Sample Mendelian Randomization Study. J Clin Med 2023; 12:347. [PMID: 36615147 PMCID: PMC9820938 DOI: 10.3390/jcm12010347] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/28/2022] [Accepted: 12/28/2022] [Indexed: 01/03/2023] Open
Abstract
Several studies have shown that female reproductive factors are associated with breast cancer (BC), but the results differ. We conducted two-sample MR in the present work. The raw data applied in the MR study were all from the Genome-wide association study (GWAS) database. The causal effect of reproductive factors on breast cancer were mainly estimated by the standard inverse variance weighted (IVW) method. Cochran's Q test and I2 statistics were used to assess heterogeneity. The pleiotropy was evaluated by MR-Egger intercept test and MR-PRESSO. Finally, the leave-one-out analysis was performed to evaluate the robustness of the MR results. We found that there was a negative causal effect of the age at last live birth on BC (OR = 0.687, 95%CI = 0.539-0.875, p = 0.002) and positive effect of the age at menopause on BC (OR = 1.054, 95%CI = 1.034-1.075, p = 8.010 × 10-8). Additionally, there were null effects of the age at menarche (OR = 0.977, 95%CI = 0.915-1.043, p = 0.484), the age at first sexual intercourse (OR = 1.053, 95%CI = 0.958-1.157, p = 0.284) and the age at first birth (OR = 0.981, 95%CI = 0.936-1.027, p = 0.404) on BC. All these results were reliable and stable. In conclusion, the present study showed that younger age at last birth and older age at menopause could increase the risk of BC.
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Affiliation(s)
| | | | | | | | | | | | - Yonglin Zhao
- Department of Oncology, The Second Affiliated Hospital of Xi’an Jiaotong University, No. 157 Xiwu Road, Xi’an 710004, China
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