{"id":34,"date":"2026-01-28T11:29:58","date_gmt":"2026-01-28T02:29:58","guid":{"rendered":"https:\/\/dev.rftcjapan.org\/?page_id=34"},"modified":"2026-02-27T13:22:33","modified_gmt":"2026-02-27T04:22:33","slug":"risk-factors-genetics","status":"publish","type":"page","link":"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/risk-factors-genetics\/","title":{"rendered":"Risk Factors &amp; Genetics"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"34\" class=\"elementor elementor-34\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fe8b0f7 e-flex e-con-boxed e-con e-parent\" data-id=\"fe8b0f7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-1330e98 e-con-full elementor-hidden-mobile e-flex e-con e-child\" data-id=\"1330e98\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-cf00d66 e-con-full e-flex e-con e-child\" data-id=\"cf00d66\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;sticky&quot;:&quot;top&quot;,&quot;sticky_on&quot;:[&quot;desktop&quot;,&quot;tablet&quot;],&quot;sticky_offset&quot;:100,&quot;sticky_parent&quot;:&quot;yes&quot;,&quot;sticky_effects_offset&quot;:0,&quot;sticky_anchor_link_offset&quot;:0}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8794339 elementor-widget elementor-widget-heading\" data-id=\"8794339\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h6 class=\"elementor-heading-title elementor-size-default\">About Breast Cancer<\/h6>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-042a078 elementor-widget elementor-widget-template\" data-id=\"042a078\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"template.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-template\">\n\t\t\t\t\t<div data-elementor-type=\"section\" data-elementor-id=\"3044\" class=\"elementor elementor-3044\" data-elementor-post-type=\"elementor_library\">\n\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-2330\" class=\"elementor-element elementor-element-fd830c6 e-con-full e-grid e-con e-child\" data-id=\"fd830c6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-2330\" class=\"elementor-element elementor-element-3717cd6 e-con-full e-flex e-con e-child\" data-id=\"3717cd6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e6c4d06 elementor-widget elementor-widget-heading\" data-id=\"e6c4d06\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Breast Cancer Basics<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c84b33f elementor-nav-menu--dropdown-none elementor-widget elementor-widget-nav-menu\" data-id=\"c84b33f\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;layout&quot;:&quot;vertical&quot;,&quot;submenu_icon&quot;:{&quot;value&quot;:&quot;&lt;i aria-hidden=\\&quot;true\\&quot; class=\\&quot;\\&quot;&gt;&lt;\\\/i&gt;&quot;,&quot;library&quot;:&quot;&quot;}}\" data-widget_type=\"nav-menu.default\">\n\t\t\t\t\t\t\t\t<nav aria-label=\"\u30e1\u30cb\u30e5\u30fc\" class=\"elementor-nav-menu--main elementor-nav-menu__container elementor-nav-menu--layout-vertical e--pointer-none\">\n\t\t\t\t<ul id=\"menu-1-c84b33f\" class=\"elementor-nav-menu sm-vertical\"><li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2517\"><a href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/what-is-breast-cancer\/\" class=\"elementor-item\">What is Breast Cancer?<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2515\"><a href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/breast-cancer-statistics-global-japan\/\" class=\"elementor-item\">Breast Cancer Statistics (Global &amp; Japan)<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2516\"><a href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/understanding-the-risk-of-breast-cancer\/\" class=\"elementor-item\">Understanding the Risk of Breast Cancer<\/a><\/li>\n<\/ul>\t\t\t<\/nav>\n\t\t\t\t\t\t<nav class=\"elementor-nav-menu--dropdown elementor-nav-menu__container\" aria-hidden=\"true\">\n\t\t\t\t<ul id=\"menu-2-c84b33f\" class=\"elementor-nav-menu sm-vertical\"><li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2517\"><a href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/what-is-breast-cancer\/\" class=\"elementor-item\" tabindex=\"-1\">What is Breast Cancer?<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2515\"><a href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/breast-cancer-statistics-global-japan\/\" class=\"elementor-item\" tabindex=\"-1\">Breast Cancer Statistics (Global &amp; Japan)<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2516\"><a href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/understanding-the-risk-of-breast-cancer\/\" class=\"elementor-item\" tabindex=\"-1\">Understanding the Risk of Breast Cancer<\/a><\/li>\n<\/ul>\t\t\t<\/nav>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-2330\" class=\"elementor-element elementor-element-67a9bd1 e-con-full e-flex e-con e-child\" data-id=\"67a9bd1\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ed0de9e elementor-widget elementor-widget-heading\" data-id=\"ed0de9e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Diagnosis &amp; Staging<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c981917 elementor-nav-menu--dropdown-none elementor-widget elementor-widget-nav-menu\" data-id=\"c981917\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;layout&quot;:&quot;vertical&quot;,&quot;submenu_icon&quot;:{&quot;value&quot;:&quot;&lt;svg aria-hidden=\\&quot;true\\&quot; class=\\&quot;e-font-icon-svg e-fas-caret-down\\&quot; viewBox=\\&quot;0 0 320 512\\&quot; xmlns=\\&quot;http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\&quot;&gt;&lt;path d=\\&quot;M31.3 192h257.3c17.8 0 26.7 21.5 14.1 34.1L174.1 354.8c-7.8 7.8-20.5 7.8-28.3 0L17.2 226.1C4.6 213.5 13.5 192 31.3 192z\\&quot;&gt;&lt;\\\/path&gt;&lt;\\\/svg&gt;&quot;,&quot;library&quot;:&quot;fa-solid&quot;}}\" data-widget_type=\"nav-menu.default\">\n\t\t\t\t\t\t\t\t<nav aria-label=\"\u30e1\u30cb\u30e5\u30fc\" class=\"elementor-nav-menu--main elementor-nav-menu__container elementor-nav-menu--layout-vertical e--pointer-none\">\n\t\t\t\t<ul id=\"menu-1-c981917\" class=\"elementor-nav-menu sm-vertical\"><li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2521\"><a href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/signs-and-symptoms\/\" class=\"elementor-item\">Signs and Symptoms<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2522\"><a href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/the-stages-of-breast-cancer\/\" class=\"elementor-item\">The Stages of Breast Cancer<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2523\"><a href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/tumor-size-and-staging\/\" class=\"elementor-item\">Tumor Size and Staging<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2520\"><a href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/metastases-and-staging\/\" class=\"elementor-item\">Metastases and Staging<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2519\"><a href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/early-stage-breast-cancers-non-invasive\/\" class=\"elementor-item\">Early-Stage Breast Cancers (Non-invasive)<\/a><\/li>\n<\/ul>\t\t\t<\/nav>\n\t\t\t\t\t\t<nav class=\"elementor-nav-menu--dropdown elementor-nav-menu__container\" aria-hidden=\"true\">\n\t\t\t\t<ul id=\"menu-2-c981917\" class=\"elementor-nav-menu sm-vertical\"><li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2521\"><a href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/signs-and-symptoms\/\" class=\"elementor-item\" tabindex=\"-1\">Signs and Symptoms<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2522\"><a href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/the-stages-of-breast-cancer\/\" class=\"elementor-item\" tabindex=\"-1\">The Stages of Breast Cancer<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2523\"><a href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/tumor-size-and-staging\/\" class=\"elementor-item\" tabindex=\"-1\">Tumor Size and Staging<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2520\"><a href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/metastases-and-staging\/\" class=\"elementor-item\" tabindex=\"-1\">Metastases and Staging<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2519\"><a href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/early-stage-breast-cancers-non-invasive\/\" class=\"elementor-item\" tabindex=\"-1\">Early-Stage Breast Cancers (Non-invasive)<\/a><\/li>\n<\/ul>\t\t\t<\/nav>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-2330\" class=\"elementor-element elementor-element-dd578e0 e-con-full e-flex e-con e-child\" data-id=\"dd578e0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6342a8d elementor-widget elementor-widget-heading\" data-id=\"6342a8d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Risk Factors &amp; Genetics<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-857c29f elementor-nav-menu--dropdown-none elementor-widget elementor-widget-nav-menu\" data-id=\"857c29f\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;layout&quot;:&quot;vertical&quot;,&quot;submenu_icon&quot;:{&quot;value&quot;:&quot;&lt;svg aria-hidden=\\&quot;true\\&quot; class=\\&quot;e-font-icon-svg e-fas-caret-down\\&quot; viewBox=\\&quot;0 0 320 512\\&quot; xmlns=\\&quot;http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\&quot;&gt;&lt;path d=\\&quot;M31.3 192h257.3c17.8 0 26.7 21.5 14.1 34.1L174.1 354.8c-7.8 7.8-20.5 7.8-28.3 0L17.2 226.1C4.6 213.5 13.5 192 31.3 192z\\&quot;&gt;&lt;\\\/path&gt;&lt;\\\/svg&gt;&quot;,&quot;library&quot;:&quot;fa-solid&quot;}}\" data-widget_type=\"nav-menu.default\">\n\t\t\t\t\t\t\t\t<nav aria-label=\"\u30e1\u30cb\u30e5\u30fc\" class=\"elementor-nav-menu--main elementor-nav-menu__container elementor-nav-menu--layout-vertical e--pointer-none\">\n\t\t\t\t<ul id=\"menu-1-857c29f\" class=\"elementor-nav-menu sm-vertical\"><li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2525\"><a href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/brca1-and-brca2-mutations-in-men\/\" class=\"elementor-item\">BRCA1 and BRCA2 Mutations in Men<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2526\"><a href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/brca1-and-brca2-mutations-in-women\/\" class=\"elementor-item\">BRCA1 and BRCA2 Mutations in Women<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2528\"><a href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/lobular-carcinoma-in-situ-lcis\/\" class=\"elementor-item\">Lobular Carcinoma in Situ (LCIS)<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2527\"><a href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/early-life-exposures\/\" class=\"elementor-item\">Early Life Exposures<\/a><\/li>\n<\/ul>\t\t\t<\/nav>\n\t\t\t\t\t\t<nav class=\"elementor-nav-menu--dropdown elementor-nav-menu__container\" aria-hidden=\"true\">\n\t\t\t\t<ul id=\"menu-2-857c29f\" class=\"elementor-nav-menu sm-vertical\"><li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2525\"><a href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/brca1-and-brca2-mutations-in-men\/\" class=\"elementor-item\" tabindex=\"-1\">BRCA1 and BRCA2 Mutations in Men<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2526\"><a href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/brca1-and-brca2-mutations-in-women\/\" class=\"elementor-item\" tabindex=\"-1\">BRCA1 and BRCA2 Mutations in Women<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2528\"><a href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/lobular-carcinoma-in-situ-lcis\/\" class=\"elementor-item\" tabindex=\"-1\">Lobular Carcinoma in Situ (LCIS)<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2527\"><a href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/early-life-exposures\/\" class=\"elementor-item\" tabindex=\"-1\">Early Life Exposures<\/a><\/li>\n<\/ul>\t\t\t<\/nav>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-2330\" class=\"elementor-element elementor-element-8382bf4 e-con-full e-flex e-con e-child\" data-id=\"8382bf4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f24ff62 elementor-widget elementor-widget-heading\" data-id=\"f24ff62\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Benign Breast Conditions<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e396cf6 elementor-nav-menu--dropdown-none elementor-widget elementor-widget-nav-menu\" data-id=\"e396cf6\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;layout&quot;:&quot;vertical&quot;,&quot;submenu_icon&quot;:{&quot;value&quot;:&quot;&lt;svg aria-hidden=\\&quot;true\\&quot; class=\\&quot;e-font-icon-svg e-fas-caret-down\\&quot; viewBox=\\&quot;0 0 320 512\\&quot; xmlns=\\&quot;http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\&quot;&gt;&lt;path d=\\&quot;M31.3 192h257.3c17.8 0 26.7 21.5 14.1 34.1L174.1 354.8c-7.8 7.8-20.5 7.8-28.3 0L17.2 226.1C4.6 213.5 13.5 192 31.3 192z\\&quot;&gt;&lt;\\\/path&gt;&lt;\\\/svg&gt;&quot;,&quot;library&quot;:&quot;fa-solid&quot;}}\" data-widget_type=\"nav-menu.default\">\n\t\t\t\t\t\t\t\t<nav aria-label=\"\u30e1\u30cb\u30e5\u30fc\" class=\"elementor-nav-menu--main elementor-nav-menu__container elementor-nav-menu--layout-vertical e--pointer-none\">\n\t\t\t\t<ul id=\"menu-1-e396cf6\" class=\"elementor-nav-menu sm-vertical\"><li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7721\"><a href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/chemo-side-effects\/\" class=\"elementor-item\">Chemo side effects<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2529\"><a href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/patient-faq\/\" class=\"elementor-item\">Patient FAQ<\/a><\/li>\n<\/ul>\t\t\t<\/nav>\n\t\t\t\t\t\t<nav class=\"elementor-nav-menu--dropdown elementor-nav-menu__container\" aria-hidden=\"true\">\n\t\t\t\t<ul id=\"menu-2-e396cf6\" class=\"elementor-nav-menu sm-vertical\"><li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7721\"><a href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/chemo-side-effects\/\" class=\"elementor-item\" tabindex=\"-1\">Chemo side effects<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-2529\"><a href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/patient-faq\/\" class=\"elementor-item\" tabindex=\"-1\">Patient FAQ<\/a><\/li>\n<\/ul>\t\t\t<\/nav>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a40198c e-con-full e-flex e-con e-child\" data-id=\"a40198c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-da4e2b1 elementor-widget elementor-widget-heading\" data-id=\"da4e2b1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Risk Factors &amp; Genetics<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9c0c26c elementor-widget elementor-widget-text-editor\" data-id=\"9c0c26c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>While many factors contribute to breast cancer, understanding your personal risk and genetic background is key to prevention and early detection. This section explores inherited gene mutations, specific high-risk markers, and how early-life experiences can shape long-term health.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2b8d8ea elementor-widget elementor-widget-image\" data-id=\"2b8d8ea\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"533\" src=\"https:\/\/rftcjapan.org\/wpdata\/wp-content\/uploads\/2026\/02\/microscope-1200x800.webp\" class=\"attachment-large size-large wp-image-6317\" alt=\"\" srcset=\"https:\/\/rftcjapan.org\/wpdata\/wp-content\/uploads\/2026\/02\/microscope-1200x800.webp 1200w, https:\/\/rftcjapan.org\/wpdata\/wp-content\/uploads\/2026\/02\/microscope-600x400.webp 600w, https:\/\/rftcjapan.org\/wpdata\/wp-content\/uploads\/2026\/02\/microscope-1080x720.webp 1080w, https:\/\/rftcjapan.org\/wpdata\/wp-content\/uploads\/2026\/02\/microscope-300x200.webp 300w, https:\/\/rftcjapan.org\/wpdata\/wp-content\/uploads\/2026\/02\/microscope-768x512.webp 768w, https:\/\/rftcjapan.org\/wpdata\/wp-content\/uploads\/2026\/02\/microscope-1536x1024.webp 1536w, https:\/\/rftcjapan.org\/wpdata\/wp-content\/uploads\/2026\/02\/microscope.webp 1920w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-37e8a1a e-con-full e-flex e-con e-child\" data-id=\"37e8a1a\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d2fbb49 elementor-widget elementor-widget-heading\" data-id=\"d2fbb49\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">BRCA1 and BRCA2 Mutations in Men<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b2c9879 elementor-widget elementor-widget-heading\" data-id=\"b2c9879\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Genetic health is not just a women\u2019s issue. Men who inherit harmful BRCA mutations face increased risks for several types of cancer and can pass these mutations to their children.<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bae1600 color-bullet-list elementor-widget elementor-widget-text-editor\" data-id=\"bae1600\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>Key Topics:<\/strong> <br \/>The specific risks for male breast, prostate, and pancreatic cancers, and why genetic testing is critical for informing family members of their own potential risks.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-133a34a elementor-mobile-align-justify elementor-widget elementor-widget-button\" data-id=\"133a34a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/brca1-and-brca2-mutations-in-men\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-icon\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-right\" viewBox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M285.476 272.971L91.132 467.314c-9.373 9.373-24.569 9.373-33.941 0l-22.667-22.667c-9.357-9.357-9.375-24.522-.04-33.901L188.505 256 34.484 101.255c-9.335-9.379-9.317-24.544.04-33.901l22.667-22.667c9.373-9.373 24.569-9.373 33.941 0L285.475 239.03c9.373 9.372 9.373 24.568.001 33.941z\"><\/path><\/svg>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Learn More<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e94b22e e-con-full e-flex e-con e-child\" data-id=\"e94b22e\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b2d807b elementor-widget elementor-widget-heading\" data-id=\"b2d807b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">BRCA1 and BRCA2 Mutations in Women<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a46c78a elementor-widget elementor-widget-heading\" data-id=\"a46c78a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Inherited mutations in the BRCA1 and BRCA2 genes significantly increase a woman's lifetime risk of developing breast and ovarian cancer, often at a younger age.<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6e6c194 color-bullet-list elementor-widget elementor-widget-text-editor\" data-id=\"6e6c194\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>Key Topics:<\/strong><br \/>Understanding the 50% chance of passing mutations to children, the statistics of lifetime cancer risk (up to 70%), and proactive management options like enhanced screening or preventive surgery.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-36d2dd0 elementor-mobile-align-justify elementor-widget elementor-widget-button\" data-id=\"36d2dd0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/brca1-and-brca2-mutations-in-women\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-icon\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-right\" viewBox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M285.476 272.971L91.132 467.314c-9.373 9.373-24.569 9.373-33.941 0l-22.667-22.667c-9.357-9.357-9.375-24.522-.04-33.901L188.505 256 34.484 101.255c-9.335-9.379-9.317-24.544.04-33.901l22.667-22.667c9.373-9.373 24.569-9.373 33.941 0L285.475 239.03c9.373 9.372 9.373 24.568.001 33.941z\"><\/path><\/svg>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Learn More<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8b19ef9 e-con-full e-flex e-con e-child\" data-id=\"8b19ef9\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f9671e7 elementor-widget elementor-widget-heading\" data-id=\"f9671e7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Lobular Carcinoma in Situ (LCIS)<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0ec13a8 elementor-widget elementor-widget-heading\" data-id=\"0ec13a8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">CIS is not breast cancer itself, but rather a \"warning sign\" that indicates a significantly higher risk of developing invasive cancer in the future.<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-501d744 color-bullet-list elementor-widget elementor-widget-text-editor\" data-id=\"501d744\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>Key Topics:<\/strong> <br \/>Why LCIS is considered a marker of risk rather than a disease, how it is typically discovered incidentally during biopsies, and the importance of long-term monitoring and personalized screening.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f2e240c elementor-mobile-align-justify elementor-widget elementor-widget-button\" data-id=\"f2e240c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/lobular-carcinoma-in-situ-lcis\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-icon\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-right\" viewBox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M285.476 272.971L91.132 467.314c-9.373 9.373-24.569 9.373-33.941 0l-22.667-22.667c-9.357-9.357-9.375-24.522-.04-33.901L188.505 256 34.484 101.255c-9.335-9.379-9.317-24.544.04-33.901l22.667-22.667c9.373-9.373 24.569-9.373 33.941 0L285.475 239.03c9.373 9.372 9.373 24.568.001 33.941z\"><\/path><\/svg>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Learn More<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-44115b7 e-con-full e-flex e-con e-child\" data-id=\"44115b7\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5b587e0 elementor-widget elementor-widget-heading\" data-id=\"5b587e0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Early Life Exposures<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9355af1 elementor-widget elementor-widget-heading\" data-id=\"9355af1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Research suggests that experiences and environmental exposures from before birth through adolescence can influence breast cancer risk later in life.<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bc7a432 color-bullet-list elementor-widget elementor-widget-text-editor\" data-id=\"bc7a432\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>Key Topics:<\/strong> <br \/>The impact of factors like maternal health during pregnancy, medical radiation exposure during childhood, and lifestyle choices like diet and physical activity during puberty.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-94f3c08 elementor-mobile-align-justify elementor-widget elementor-widget-button\" data-id=\"94f3c08\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/rftcjapan.org\/en\/about-breast-cancer\/early-life-exposures\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-icon\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-right\" viewBox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M285.476 272.971L91.132 467.314c-9.373 9.373-24.569 9.373-33.941 0l-22.667-22.667c-9.357-9.357-9.375-24.522-.04-33.901L188.505 256 34.484 101.255c-9.335-9.379-9.317-24.544.04-33.901l22.667-22.667c9.373-9.373 24.569-9.373 33.941 0L285.475 239.03c9.373 9.372 9.373 24.568.001 33.941z\"><\/path><\/svg>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Learn More<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>About Breast Cancer While many factors contribute to breast cancer, understanding your personal risk and genetic background is key to prevention and early detection. This section explores inherited gene mutations, specific high-risk markers, and how early-life experiences can shape long-term health. BRCA1 and BRCA2 Mutations in Men Genetic health is not just a women\u2019s issue. [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":27,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-34","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Risk Factors &amp; Genetics - RFTC Japan<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/rftcjapan.org\/\u4e73\u304c\u3093\u306b\u3064\u3044\u3066\/\u30ea\u30b9\u30af\u8981\u56e0\u3068\u907a\u4f1d\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Risk Factors &amp; Genetics - RFTC Japan\" \/>\n<meta property=\"og:description\" content=\"About Breast Cancer While many factors contribute to breast cancer, understanding your personal risk and genetic background is key to prevention and early detection. This section explores inherited gene mutations, specific high-risk markers, and how early-life experiences can shape long-term health. BRCA1 and BRCA2 Mutations in Men Genetic health is not just a women\u2019s issue. [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/rftcjapan.org\/\u4e73\u304c\u3093\u306b\u3064\u3044\u3066\/\u30ea\u30b9\u30af\u8981\u56e0\u3068\u907a\u4f1d\/\" \/>\n<meta property=\"og:site_name\" content=\"RFTC Japan\" \/>\n<meta property=\"article:modified_time\" content=\"2026-02-27T04:22:33+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/rftcjapan.org\/wpdata\/wp-content\/uploads\/2026\/02\/microscope-1200x800.webp\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"28 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/rftcjapan.org\\\/%e4%b9%b3%e3%81%8c%e3%82%93%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6\\\/%e3%83%aa%e3%82%b9%e3%82%af%e8%a6%81%e5%9b%a0%e3%81%a8%e9%81%ba%e4%bc%9d\\\/\",\"url\":\"https:\\\/\\\/rftcjapan.org\\\/%e4%b9%b3%e3%81%8c%e3%82%93%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6\\\/%e3%83%aa%e3%82%b9%e3%82%af%e8%a6%81%e5%9b%a0%e3%81%a8%e9%81%ba%e4%bc%9d\\\/\",\"name\":\"Risk Factors &amp; Genetics - RFTC Japan\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/rftcjapan.org\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/rftcjapan.org\\\/%e4%b9%b3%e3%81%8c%e3%82%93%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6\\\/%e3%83%aa%e3%82%b9%e3%82%af%e8%a6%81%e5%9b%a0%e3%81%a8%e9%81%ba%e4%bc%9d\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/rftcjapan.org\\\/%e4%b9%b3%e3%81%8c%e3%82%93%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6\\\/%e3%83%aa%e3%82%b9%e3%82%af%e8%a6%81%e5%9b%a0%e3%81%a8%e9%81%ba%e4%bc%9d\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/rftcjapan.org\\\/wpdata\\\/wp-content\\\/uploads\\\/2026\\\/02\\\/microscope-1200x800.webp\",\"datePublished\":\"2026-01-28T02:29:58+00:00\",\"dateModified\":\"2026-02-27T04:22:33+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/rftcjapan.org\\\/%e4%b9%b3%e3%81%8c%e3%82%93%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6\\\/%e3%83%aa%e3%82%b9%e3%82%af%e8%a6%81%e5%9b%a0%e3%81%a8%e9%81%ba%e4%bc%9d\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/rftcjapan.org\\\/%e4%b9%b3%e3%81%8c%e3%82%93%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6\\\/%e3%83%aa%e3%82%b9%e3%82%af%e8%a6%81%e5%9b%a0%e3%81%a8%e9%81%ba%e4%bc%9d\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/rftcjapan.org\\\/%e4%b9%b3%e3%81%8c%e3%82%93%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6\\\/%e3%83%aa%e3%82%b9%e3%82%af%e8%a6%81%e5%9b%a0%e3%81%a8%e9%81%ba%e4%bc%9d\\\/#primaryimage\",\"url\":\"https:\\\/\\\/rftcjapan.org\\\/wpdata\\\/wp-content\\\/uploads\\\/2026\\\/02\\\/microscope-1200x800.webp\",\"contentUrl\":\"https:\\\/\\\/rftcjapan.org\\\/wpdata\\\/wp-content\\\/uploads\\\/2026\\\/02\\\/microscope-1200x800.webp\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/rftcjapan.org\\\/%e4%b9%b3%e3%81%8c%e3%82%93%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6\\\/%e3%83%aa%e3%82%b9%e3%82%af%e8%a6%81%e5%9b%a0%e3%81%a8%e9%81%ba%e4%bc%9d\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/rftcjapan.org\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"About Breast Cancer\",\"item\":\"https:\\\/\\\/rftcjapan.org\\\/%e4%b9%b3%e3%81%8c%e3%82%93%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Risk Factors &amp; Genetics\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/rftcjapan.org\\\/#website\",\"url\":\"https:\\\/\\\/rftcjapan.org\\\/\",\"name\":\"RFTC Japan\",\"description\":\"Japan&#039;s Leading Breast Cancer Foundation\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/rftcjapan.org\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Risk Factors &amp; Genetics - RFTC Japan","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/rftcjapan.org\/\u4e73\u304c\u3093\u306b\u3064\u3044\u3066\/\u30ea\u30b9\u30af\u8981\u56e0\u3068\u907a\u4f1d\/","og_locale":"en_US","og_type":"article","og_title":"Risk Factors &amp; Genetics - RFTC Japan","og_description":"About Breast Cancer While many factors contribute to breast cancer, understanding your personal risk and genetic background is key to prevention and early detection. This section explores inherited gene mutations, specific high-risk markers, and how early-life experiences can shape long-term health. BRCA1 and BRCA2 Mutations in Men Genetic health is not just a women\u2019s issue. [&hellip;]","og_url":"https:\/\/rftcjapan.org\/\u4e73\u304c\u3093\u306b\u3064\u3044\u3066\/\u30ea\u30b9\u30af\u8981\u56e0\u3068\u907a\u4f1d\/","og_site_name":"RFTC Japan","article_modified_time":"2026-02-27T04:22:33+00:00","og_image":[{"url":"https:\/\/rftcjapan.org\/wpdata\/wp-content\/uploads\/2026\/02\/microscope-1200x800.webp","type":"","width":"","height":""}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"28 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/rftcjapan.org\/%e4%b9%b3%e3%81%8c%e3%82%93%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6\/%e3%83%aa%e3%82%b9%e3%82%af%e8%a6%81%e5%9b%a0%e3%81%a8%e9%81%ba%e4%bc%9d\/","url":"https:\/\/rftcjapan.org\/%e4%b9%b3%e3%81%8c%e3%82%93%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6\/%e3%83%aa%e3%82%b9%e3%82%af%e8%a6%81%e5%9b%a0%e3%81%a8%e9%81%ba%e4%bc%9d\/","name":"Risk Factors &amp; Genetics - RFTC Japan","isPartOf":{"@id":"https:\/\/rftcjapan.org\/#website"},"primaryImageOfPage":{"@id":"https:\/\/rftcjapan.org\/%e4%b9%b3%e3%81%8c%e3%82%93%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6\/%e3%83%aa%e3%82%b9%e3%82%af%e8%a6%81%e5%9b%a0%e3%81%a8%e9%81%ba%e4%bc%9d\/#primaryimage"},"image":{"@id":"https:\/\/rftcjapan.org\/%e4%b9%b3%e3%81%8c%e3%82%93%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6\/%e3%83%aa%e3%82%b9%e3%82%af%e8%a6%81%e5%9b%a0%e3%81%a8%e9%81%ba%e4%bc%9d\/#primaryimage"},"thumbnailUrl":"https:\/\/rftcjapan.org\/wpdata\/wp-content\/uploads\/2026\/02\/microscope-1200x800.webp","datePublished":"2026-01-28T02:29:58+00:00","dateModified":"2026-02-27T04:22:33+00:00","breadcrumb":{"@id":"https:\/\/rftcjapan.org\/%e4%b9%b3%e3%81%8c%e3%82%93%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6\/%e3%83%aa%e3%82%b9%e3%82%af%e8%a6%81%e5%9b%a0%e3%81%a8%e9%81%ba%e4%bc%9d\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/rftcjapan.org\/%e4%b9%b3%e3%81%8c%e3%82%93%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6\/%e3%83%aa%e3%82%b9%e3%82%af%e8%a6%81%e5%9b%a0%e3%81%a8%e9%81%ba%e4%bc%9d\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/rftcjapan.org\/%e4%b9%b3%e3%81%8c%e3%82%93%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6\/%e3%83%aa%e3%82%b9%e3%82%af%e8%a6%81%e5%9b%a0%e3%81%a8%e9%81%ba%e4%bc%9d\/#primaryimage","url":"https:\/\/rftcjapan.org\/wpdata\/wp-content\/uploads\/2026\/02\/microscope-1200x800.webp","contentUrl":"https:\/\/rftcjapan.org\/wpdata\/wp-content\/uploads\/2026\/02\/microscope-1200x800.webp"},{"@type":"BreadcrumbList","@id":"https:\/\/rftcjapan.org\/%e4%b9%b3%e3%81%8c%e3%82%93%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6\/%e3%83%aa%e3%82%b9%e3%82%af%e8%a6%81%e5%9b%a0%e3%81%a8%e9%81%ba%e4%bc%9d\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/rftcjapan.org\/"},{"@type":"ListItem","position":2,"name":"About Breast Cancer","item":"https:\/\/rftcjapan.org\/%e4%b9%b3%e3%81%8c%e3%82%93%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6\/"},{"@type":"ListItem","position":3,"name":"Risk Factors &amp; Genetics"}]},{"@type":"WebSite","@id":"https:\/\/rftcjapan.org\/#website","url":"https:\/\/rftcjapan.org\/","name":"RFTC Japan","description":"Japan&#039;s Leading Breast Cancer Foundation","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/rftcjapan.org\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/rftcjapan.org\/en\/wp-json\/wp\/v2\/pages\/34","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rftcjapan.org\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/rftcjapan.org\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/rftcjapan.org\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/rftcjapan.org\/en\/wp-json\/wp\/v2\/comments?post=34"}],"version-history":[{"count":40,"href":"https:\/\/rftcjapan.org\/en\/wp-json\/wp\/v2\/pages\/34\/revisions"}],"predecessor-version":[{"id":7368,"href":"https:\/\/rftcjapan.org\/en\/wp-json\/wp\/v2\/pages\/34\/revisions\/7368"}],"up":[{"embeddable":true,"href":"https:\/\/rftcjapan.org\/en\/wp-json\/wp\/v2\/pages\/27"}],"wp:attachment":[{"href":"https:\/\/rftcjapan.org\/en\/wp-json\/wp\/v2\/media?parent=34"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}