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ESR1, BRCA1 and CYP19A defects induce genomic instability, disrupt transcriptional DNA-stabilizing circuits, and progressively impair glucose regulation, ultimately culminating in DNA damage, impaired repair, and cancer initiation in affected organs.",{"@graph":14,"@context":73},[15,34,56],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/healthcare/","Healthcare",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/human-cancers-derived-from-either-genetic-or-lifestyle-factors-are-initiated-by-impaired-estrogen-signaling/464530/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/human-cancers-derived-from-either-genetic-or-lifestyle-factors-are-initiated-by-impaired-estrogen-signaling/464530.png","ImageObject",300,407,{"name":42,"@type":43},"Finn","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-11-08","2026-09-30",true,{"@type":52,"interactionType":53,"userInteractionCount":55},"InteractionCounter",{"@type":54},"ViewAction",10,{"@type":57,"mainEntity":58},"FAQPage",[59,65,69],{"name":60,"@type":61,"acceptedAnswer":62},"How does impaired estrogen signaling connect genetic and lifestyle causes of cancer risk?","Question",{"text":63,"@type":64},"Impaired estrogen signaling, whether from genetic defects or lifestyle factors, triggers hypothalamic neural and hormonal commands that attempt to restore genomic stability. When compensation fails, breakdown of genomic regulation leads to cancer initiation.","Answer",{"name":66,"@type":61,"acceptedAnswer":67},"What roles do ESR1, BRCA1, and CYP19A play in the proposed mechanism?",{"text":68,"@type":64},"Germline mutations affecting ESR1, BRCA1, and CYP19A cause genomic instability. Their encoded proteins form transcriptional circuits driven by estrogen regulation that stabilize DNA and coordinate cell proliferation and glucose supply.",{"name":70,"@type":61,"acceptedAnswer":71},"What is the relationship between type-2 diabetes, insulin resistance, and cancer development in this article?",{"text":72,"@type":64},"The strengthening defect in estrogen signaling and impaired glucose uptake lead to metabolic syndrome and type-2 diabetes. Despite compensatory actions, increased serum glucose and altered organ metabolism accompany later DNA damage and cancer initiation.","https://schema.org",{"og:url":32,"og:type":75,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":77,"canonical":32},"index,follow",{"doc_id":79,"site_id":7},464530,1790938172,{"code":4,"msg":82,"data":83},"success",[84,88,92,96,101,106,110,115,120,123,126],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":85,"show_sort_weight":86,"slug":87},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":89,"show_sort_weight":90,"slug":91},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":93,"show_sort_weight":94,"slug":95},"Exam",70,"exam",{"id":97,"doc_module":4,"doc_module_name":25,"category_name":98,"show_sort_weight":99,"slug":100},5,"Comic",60,"comic",{"id":102,"doc_module":4,"doc_module_name":25,"category_name":103,"show_sort_weight":104,"slug":105},6,"Technology",50,"technology",{"id":107,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":108,"slug":109},7,40,"healthcare",{"id":111,"doc_module":4,"doc_module_name":25,"category_name":112,"show_sort_weight":113,"slug":114},8,"Research & Report",30,"research-report",{"id":116,"doc_module":4,"doc_module_name":25,"category_name":117,"show_sort_weight":118,"slug":119},9,"Religion & Spirituality",20,"religion-spirituality",{"id":118,"doc_module":4,"doc_module_name":25,"category_name":121,"show_sort_weight":118,"slug":122},"World Cup","world-cup",{"id":55,"doc_module":4,"doc_module_name":25,"category_name":124,"show_sort_weight":55,"slug":125},"Lifestyle","lifestyle",{"id":127,"doc_module":4,"doc_module_name":25,"category_name":128,"show_sort_weight":97,"slug":129},19,"General","general",{"code":4,"msg":82,"data":131},{"doc_id":79,"user_id":132,"nickname":42,"user_avatar":133,"doc_module":4,"category_id":107,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":55,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":139,"language":140,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":12,"update_tm":144,"read_time":145,"preview_page_count":4},34359740700684,"https://ap-avatar.wpscdn.com/avatar/1f400023980c374ae676?_k=1777273430885731487","Review  \nHuman Cancers Derived from Either Genetic or Lifestyle Factors Are Initiated by Impaired Estrogen Signaling  \nZsuzsanna Suba   \nAcademic Editor: Satoshi Inoue  \nReceived: 24 October 2025  \nRevised: 17 December 2025  \nAccepted: 25 December 2025  \nPublished: 26 December 2025  \nCopyright: © 2025 by the author. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.  \nDepartment of Molecular Pathology, National Institute of Oncology, Ráth György Str. 7-9, H-1122 Budapest, Hungary; [subazdr@gmail.com](subazdr@gmail.com); Tel.: +36-1-224-8600  \nSimple Summary  \nImpaired estrogen signaling caused by either endogenous or environmental factors alarms the hypothalamus, which then issues neural and hormonal commands throughout the whole body to restore genomic stability. In the first, compensated phase of defective estrogen signaling, patients appear healthy. Hyperinsulinemia is a subtle signal of the genome that indicates successful restoration of estrogen signaling at the expense of excessive insulin synthesis. Over time, the strengthening defect in estrogen signaling and impaired glucose uptake result in metabolic syndrome, with various symptoms and altered laboratory findings. The compensatory molecular changes are warnings from an endangered genome struggling to restore estrogen signaling and DNA stability. The worsening defect in estrogen signaling leads to type-2 diabetes, reflected by increased serum glucose levels despite all compensatory actions, while organs suffer from the lack of glucose and excessive lipid deposition. The complete breakdown of estrogen signaling results in DNA damage and cancer initiation in the affected organ. Cancer development is the genome’s cry for help to combat against dysregulation.  \nAbstract  \nBackground: Genetic studies have found that a germline BRCA1 gene mutation is the origin of highly increased cancer risk. Clinical studies have suggested that increased cancer risk in type-2 diabetes may be attributed to unhealthy lifestyle factors and bad habits. Purpose: Patients with either BRCA1 gene mutation or type-2 diabetes similarly exhibit increased cancer risk, insulin resistance, and fertility disorders. It was suggested that these three alterations derive from a common genomic failure, and its recognition may shed light on the unsolved secret of cancer. Results: (1) Germline mutations on ESR1, BRCA1, and CYP19A genes encoding estrogen receptor alpha (ERα), genome safeguarding BRCA1 protein, and CYP19 aromatase enzyme cause genomic instability. BRCA1 and ESR1 gene mutations specifically cause breast cancer, while error in the CYP19A gene leads to cancers in the endometrium, ovaries, and thyroid. (2) ERα, BRCA1, and CYP19 aromatase proteins are transcription factors creating the crucial DNA stabilizer circuit driven by estrogen regulation. Liganded ERα drives a second regulatory circuit to also control cell proliferation, in partnership with various growth factors. In a third regulatory circuit, liganded ERα drives cellular glucose supply in close interplay with insulin, IGF-1, and glucose transporters. (3) Impaired expression or activation of each transcription factor of the triad leads to defective estrogen signaling and endangers regular cell proliferation, insulin sensitivity, and fertility. (4) Impaired estrogen signaling caused by either genetic or lifestyle factors alarms the hypothalamus, which issues neural and hormonal commands throughout the body to restore estrogen signaling. (5) When the compensatory actions cannot restore estrogen signaling, the breakdown of genomic regulation leads to cancer  \ninitiation. (6) Lifestyle factors that upregulate estrogen signaling decrease cancer risk, while downregulating estrogen signaling increases it. Conclusions: Increased cancer risk, insulin resistance, and infertility all originate from defective estrogen signaling.  \nKeywo","cbCaimItU8062EAJ","https://ap.wps.com/l/cbCaimItU8062EAJ","pdf",3007090,34,"English","# Simple Summary\n# Abstract\n## Background\n## Purpose\n## Results\n## Conclusions\n# 1. Introduction","[{\"question\":\"How does impaired estrogen signaling connect genetic and lifestyle causes of cancer risk?\",\"answer\":\"Impaired estrogen signaling, whether from genetic defects or lifestyle factors, triggers hypothalamic neural and hormonal commands that attempt to restore genomic stability. When compensation fails, breakdown of genomic regulation leads to cancer initiation.\"},{\"question\":\"What roles do ESR1, BRCA1, and CYP19A play in the proposed mechanism?\",\"answer\":\"Germline mutations affecting ESR1, BRCA1, and CYP19A cause genomic instability. Their encoded proteins form transcriptional circuits driven by estrogen regulation that stabilize DNA and coordinate cell proliferation and glucose supply.\"},{\"question\":\"What is the relationship between type-2 diabetes, insulin resistance, and cancer development in this article?\",\"answer\":\"The strengthening defect in estrogen signaling and impaired glucose uptake lead to metabolic syndrome and type-2 diabetes. Despite compensatory actions, increased serum glucose and altered organ metabolism accompany later DNA damage and cancer initiation.\"}]","Human Cancers Derived from Either Genetic or Lifestyle Factors Are Initiated by Impaired Estrogen Signaling | PDF",1790768313,86]