Evidence map›Paper›PMID 42446766›Full record

ArticleJournal of molecular histology2026

lncRNA MEG3 and Beclin-1 as diagnostic biomarkers in serous ovarian carcinoma: molecular and immunohistochemical insights.

Ansam M Z El Desoky, Heba Mahmoud Abdelgeleel, Manar Moustafa, Marwa Ahmed Mohamed Abdalrahman, Mai M Eldaly

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Article in Journal of molecular histology, 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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5 · Who and what money

Authors and funding

5 authors.

Ansam M Z El DesokyMedical Biochemistry and Molecular Biology Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt.
Heba Mahmoud AbdelgeleelPathology Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt.
Manar MoustafaPathology Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt. mmahmd@medicine.zu.edu.eg.
Marwa Ahmed Mohamed AbdalrahmanObstetrics and Gynecology Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt.
Mai M EldalyMedical Biochemistry and Molecular Biology Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Serous ovarian carcinoma (SOC) is frequently diagnosed at advanced stages and is associated with poor clinical outcomes, highlighting the urgent need for reliable diagnostic and prognostic biomarkers. Long non-coding RNA MEG3 and the autophagy-related protein Beclin-1 are recognized tumor suppressors; however, their combined diagnostic relevance in SOC remains insufficiently explored. This case-control study included 24 patients with histopathologically confirmed SOC. Paired tumor and adjacent non-tumorous ovarian tissues were analyzed for lncRNA MEG3 expression using quantitative real-time PCR and for Beclin-1 protein expression using immunohistochemistry. Serum CA-125 levels were assessed by ELISA. Associations with clinicopathological parameters were evaluated, and diagnostic performance was analyzed using receiver operating characteristic (ROC) curves. Both lncRNA MEG3 and Beclin-1 were significantly downregulated in SOC tissues compared with adjacent non-cancerous tissues (P < 0.0001). Reduced expression was significantly associated with tumor grade and ascites. The relationship with FIGO stage was not uniform in this cohort and should be interpreted cautiously because of the small sample size and unequal distribution of early and advanced cases. Beclin-1 expression was notably higher in premenopausal patients and in well to moderately differentiated tumors. A strong positive correlation was observed between lncRNA MEG3 and Beclin-1 expression (r = 0.96, P < 0.001), indicating a strong statistical association rather than a proven regulatory interaction. ROC curve analysis suggested diagnostic potential for lncRNA MEG3, Beclin-1, and serum CA-125. The concurrent downregulation of lncRNA MEG3 and Beclin-1 in SOC tissues suggests that these markers may serve as promising complementary biomarkers. However, their clinical utility should be considered preliminary and requires validation in larger, multicenter cohorts with functional studies before routine clinical application can be recommended.

Indexed as

Beclin-1Biomarkers, TumorCystadenocarcinoma, SerousOvarian NeoplasmsRNA, Long NoncodingAdultAgedCA-125 AntigenCase-Control StudiesFemaleGene Expression Regulation, NeoplasticHumansImmunohistochemistryMiddle AgedROC CurveBeclin-1BECN1 protein, humanBiomarkers, TumorCA-125 AntigenMEG3 non-coding RNA, humanRNA, Long NoncodingBeclin 1Diagnostic Biomarkers and Tumor Suppressor lncRNAslncMEG3Serous ovarian carcinoma

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.