ArticleNature genetics2025
Tamoxifen induces PI3K activation in uterine cancer.
Article in Nature genetics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Integrated Clinicogenomic Risk Modeling for Metachronous Second Primary Cancers.medRxiv : the preprint server for health sciences · 2026Article
- Multimodal analysis of a rare BARD1 missense variant suggests its pathogenicity is conditional.NPJ breast cancer · 2026Article
- Study on the expression of p53, PTEN, and p16 in endometrial polyps of breast cancer patients receiving endocrine therapy: a comparative study of immunohistochemistry.Frontiers in oncology · 2026Article
- Oxidative DNA damage induced by 3,4-diOH-TAM, a tamoxifen metabolite, in relation to endometrial carcinogenesis.Scientific reports · 2025Article
- Tamoxifen takes the wheel.Nature reviews. Cancer · 2025Article
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Authors and funding
34 authors.
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Abstract
Mutagenic processes and clonal selection contribute to the development of therapy-associated secondary neoplasms, a known complication of cancer treatment. The association between tamoxifen therapy and secondary uterine cancers is uncommon but well established; however, the genetic mechanisms underlying tamoxifen-driven tumorigenesis remain unclear. We find that oncogenic PIK3CA mutations, common in spontaneously arising estrogen-associated de novo uterine cancer, are significantly less frequent in tamoxifen-associated tumors. In vivo, tamoxifen-induced estrogen receptor stimulation activates phosphoinositide 3-kinase (PI3K) signaling in normal mouse uterine tissue, potentially eliminating the selective benefit of PI3K-activating mutations in tamoxifen-associated uterine cancer. Together, we present a unique pathway of therapy-associated carcinogenesis in which tamoxifen-induced activation of the PI3K pathway acts as a non-genetic driver event, contributing to the multistep model of uterine carcinogenesis. While this PI3K mechanism is specific to tamoxifen-associated uterine cancer, the concept of treatment-induced signaling events may have broader applicability to other routes of tumorigenesis.
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