Evidence map›Paper›PMID 41608334›Full record

ArticleWorld journal of clinical oncology2026

Evaluating murine double minute 2 status as a stratification tool for risk-adapted management in plasma cell neoplasms.

Noura A A Ebrahim, Habiba Elfandy, Aya Mohamed Adel Arafat, Amira Diyaa Darwish, Mahitab Ibrahim Eltohamy

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Article in World journal of clinical oncology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

5 authors.

Noura A A EbrahimDepartment of Oncologic Pathology, National Cancer Institute, Cairo University, Cairo 11796, Al Qāhirah, Egypt. npathologist@gmail.com.
Habiba ElfandyDepartment of Oncologic Pathology, National Cancer Institute, Cairo University, Cairo 11796, Al Qāhirah, Egypt.
Aya Mohamed Adel ArafatDepartment of Clinical and Chemical Pathology, Kasr Al-Aini Faculty of Medicine, Cairo University, Cairo 11562, Egypt.
Amira Diyaa DarwishDepartment of Medical Oncology, National Cancer Institute, Cairo University, Cairo 11796, Al Qāhirah, Egypt.
Mahitab Ibrahim EltohamyDepartment of Oncologic Pathology, National Cancer Institute, Cairo University, Cairo 11796, Al Qāhirah, Egypt.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe E3 ubiquitin ligase murine double minute 2 (MDM2) is a key negative regulator of the tumor suppressor protein p53 and has been implicated in the development of various cancers, including hematologic malignancies. In multiple myeloma (MM), increased MDM2 expression has been reported and may play a role in disease progression and resistance to therapy. Despite this, the prognostic implications of MDM2 detected through immunohistochemistry (IHC) remain insufficiently defined.

aimTo evaluate the clinical, pathological, and prognostic significance of MDM2 expression in plasma cell neoplasms, with a focus on its potential utility as an early indicator of disease severity and therapeutic response.

methodsA retrospective analysis was conducted on 71 patients diagnosed with MM or related plasma cell disorders treated at the National Cancer Institute between 2018 and 2022. MDM2 protein expression was assessed using IHC on extramedullary lesion biopsy samples, employing the MDM2 (A.M.1) monoclonal antibody. Nuclear staining in at least 1% of plasma cells was used as the threshold for MDM2 positivity. Comparative analyses were performed between MDM2-positive and MDM2-negative groups, examining clinical characteristics, laboratory data, histopathological features, treatment responses at 12 weeks and 24 weeks, and survival outcomes, including relapse-free survival (RFS) and overall survival.

resultsMDM2 expression was identified in 30% of patient samples. While no major differences were observed in baseline demographics, disease stage, or most laboratory values, serum albumin levels were significantly lower in MDM2-positive patients (

conclusionIHC-detected MDM2 overexpression identifies a distinct subset of plasma cell neoplasms characterized by reduced early treatment responsiveness and significantly shorter RFS. These findings support the potential of MDM2 as a prognostic biomarker for early relapse risk in MM. Incorporating MDM2 assessment into diagnostic and prognostic workflows may enable more individualized treatment approaches. Further validation through prospective studies is recommended.

Indexed as

CD45Epithelial membrane antigenImmunohistochemistryMultiple myelomaMurine double minute 2p53 pathwayPlasma cell neoplasmsPrognostic biomarkerRelapse-free survivalRisk stratification

Identifiers

PMID41608334
PMCPMC12836004

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