Targeting Mouse Double Minute 2 Homolog (MDM2) Oncogene in Breast Adenocarcinoma
Athanasios Niotis1, Sofianiki Mastronikoli2, Despoina Spyropoulou3
1Department of Breast Surgery, "Henry Dunant" Medical Hospital, Athens, Greece.
Maedica
|July 8, 2026
Summary
MDM2 oncogene amplification drives breast adenocarcinoma (BAC) progression by disrupting the Tp53-MDM2 balance. Targeted therapies against MDM2 show promise for specific BAC genetic profiles.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Breast adenocarcinoma (BAC) is a major cause of cancer mortality in women globally.
- The tumor suppressor p53 and its negative regulator, the MDM2 oncogene, form a critical feedback loop in BAC.
- Deregulation of this loop is implicated in BAC development and progression.
Purpose of the Study:
- To investigate MDM2 oncogene deregulation mechanisms in BAC.
- To review targeted therapeutic strategies for MDM2-driven BAC.
Main Methods:
- A systematic review of 50 PubMed-indexed studies.
- Keywords included: breast, cancer, oncogene, MDM2, targeted therapies.
- Focus on MDM2 gene/protein function, deregulation, and anti-MDM2 regimens in BAC.
Main Results:
- MDM2 oncogene amplification, with or without gene polymorphisms, is a key event in BAC onset and progression.
- These genetic alterations disrupt the Tp53-MDM2 balance and breast epithelial cell homeostasis.
- MDM2 overexpression, primarily due to amplification, is frequent in BAC.
Conclusions:
- Understanding MDM2's role is crucial for developing targeted therapies in BAC.
- Specific anti-MDM2 agents are being explored for BACs with distinct genetic signatures.
- Targeting MDM2 offers a promising therapeutic avenue for specific BAC subtypes.
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