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Language: search.filters.language.EnglishSubject: search.filters.subject.molecular biomarkers

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    Decoding Breast Cancer: Emerging Molecular Biomarkers and Novel Therapeutic Targets for Precision Medicine
    (MDPI AG, 2025-12-22)
    Dámaris P. Intriago-Baldeón
    ;
    Eduarda Sofía Pérez-Coral
    ;
    Martina Isabella Armas Samaniego
    ;
    Vanessa I. Romero
    ;
    Juan Carlos Pozo Palacios
    Breast cancer is the most frequent gynecological malignancy and the main cause of cancer death in the female population worldwide. One of the most significant challenges in its clinical management is the molecular heterogeneity of malignant breast tumors, which is reflected in the current molecular classification of these entities. In each of these tumor molecular subtypes, distinct genetic alterations are involved, and several intracellular signaling pathways contribute to defining their biological identity and clinical response. This literature review summarized the main classic and emerging biomarkers in breast cancer, along with the therapies associated with them. There are several classic biomarkers associated with this disease, such as estrogen and progesterone receptors, the HER2 receptor, and the Ki-67 cell proliferation marker. Given the limitations of these biomarkers, new biomarkers have been identified, including the TP53 tumor suppressor gene, the EGFR, different types of RNAs, plus epigenetic and immunological biomarkers. The integration of classic and emerging biomarkers along with new therapeutic targets in the clinical practice has promoted a thorough understanding of the high molecular complexity of breast cancer and the development of precision medicine strategies which increase the chances of therapeutic success.
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    Endometriosis as a Systemic and Complex Disease: Toward Phenotype-Based Classification and Personalized Therapy
    (MDPI AG, 2026-01-16)
    Daniel Simancas-Racines
    ;
    Emilia Jiménez Flores
    ;
    Martha Montalvan
    ;
    Raquel Horowitz
    ;
    Valeria Araujo
    Endometriosis is traditionally conceptualized as a pelvic lesion–centered disease; however, mounting evidence indicates it is a chronic, systemic, and multifactorial inflammatory disorder. This review examines the molecular dialog between ectopic endometrial tissue, the immune system, and peripheral organs, highlighting mechanisms that underlie disease chronicity, symptom variability, and therapeutic resistance. Ectopic endometrium exhibits distinct transcriptomic and epigenetic signatures, disrupted hormonal signaling, and a pro-inflammatory microenvironment characterized by inflammatory mediators, prostaglandins, and matrix metalloproteinases. Immune-endometrial crosstalk fosters immune evasion through altered cytokine profiles, extracellular vesicles, immune checkpoint molecules, and immunomodulatory microRNAs, enabling lesion persistence. Beyond the pelvis, systemic low-grade inflammation, circulating cytokines, and microRNAs reflect a molecular spillover that contributes to chronic pain, fatigue, hypothalamic–pituitary–adrenal axis dysregulation, and emerging gut–endometrium interactions. Furthermore, circulating biomarkers—including microRNAs, lncRNAs, extracellular vesicles, and proteomic signatures—offer potential for early diagnosis, patient stratification, and monitoring of therapeutic responses. Conventional hormonal therapies demonstrate limited efficacy, whereas novel molecular targets and delivery systems, including angiogenesis inhibitors, immune modulators, epigenetic regulators, and nanotherapeutics, show promise for precision intervention. A systems medicine framework, integrating multi-omics analyses and network-based approaches, supports reconceptualizing endometriosis as a systemic inflammatory condition with gynecologic manifestations. This perspective emphasizes the need for interdisciplinary collaboration to advance diagnostics, therapeutics, and individualized patient care, ultimately moving beyond a lesion-centered paradigm toward a molecularly informed, holistic understanding of endometriosis.