Evidence map›Paper›PMID 42564422›Full record

ArticleAfrican journal of laboratory medicine2026

Expression of p53 and p63 proteins and their correlation with histological grades among gastric carcinoma specimens at Mbarara Regional Referral Hospital.

Lydia Jolly Ninsiima, Abraham Birungi, Richard Kasadha, Michael Junior Mugisa, Leuben Tibenderana, Nicholas Nuwashaba, Saphurah Nabaasa, Hassan Wasswa, Lawrence Amadile, Frank Ssedyabane

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Article in African journal of laboratory medicine, 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

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10 authors.

Lydia Jolly NinsiimaDepartment of Medical Laboratory Science, Faculty of Medicine, Mbarara University of Science and Technology, Mbarara, Uganda.ORCID https://orcid.org/0009-0004-2282-3777
Abraham BirungiDepartment of Pathology, Faculty of Medicine, Mbarara University of Science and Technology, Mbarara, Uganda.ORCID https://orcid.org/0000-0002-4141-8900
Richard KasadhaDepartment of Medical Laboratory Science, Faculty of Medicine, Mbarara University of Science and Technology, Mbarara, Uganda.ORCID https://orcid.org/0009-0007-8995-5119
Michael Junior MugisaDepartment of Medical Laboratory Science, Faculty of Medicine, Mbarara University of Science and Technology, Mbarara, Uganda.ORCID https://orcid.org/0009-0008-3947-3864
Leuben TibenderanaDepartment of Medical Laboratory Science, Faculty of Medicine, Mbarara University of Science and Technology, Mbarara, Uganda.ORCID https://orcid.org/0009-0000-8697-3732
Nicholas NuwashabaDepartment of Medical Laboratory Science, Faculty of Medicine, Mbarara University of Science and Technology, Mbarara, Uganda.ORCID https://orcid.org/0009-0009-2415-6839
Saphurah NabaasaDepartment of Medical Laboratory Science, Faculty of Medicine, Mbarara University of Science and Technology, Mbarara, Uganda.ORCID https://orcid.org/0009-0000-0221-9741
Hassan WasswaDepartment of Medical Laboratory Science, Faculty of Medicine, Mbarara University of Science and Technology, Mbarara, Uganda.ORCID https://orcid.org/0009-0002-5438-9173
Lawrence AmadileDepartment of Medical Laboratory Science, Faculty of Medicine, Mbarara University of Science and Technology, Mbarara, Uganda.ORCID https://orcid.org/0009-0008-2928-4672
Frank SsedyabaneDepartment of Medical Laboratory Science, Faculty of Medicine, Mbarara University of Science and Technology, Mbarara, Uganda.ORCID https://orcid.org/0000-0002-6836-5749

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: Gastric carcinoma remains one of the most common and deadly cancers worldwide, especially among older men. In sub-Saharan Africa and Uganda in particular, the diagnostic biomarkers of gastric carcinomas are not well documented; also, limited studies have been conducted in Uganda regarding the prognostic and diagnostic value of p53 and p63 immunohistochemical expression in gastric carcinomas. Objective: We aimed to determine the immunohistochemical expression of p53 and p63 proteins and their correlation with different histological grades among archived gastric carcinoma specimens at Mbarara Regional Referral Hospital. Methods: This was a laboratory-based cross-sectional study. We retrieved 166 archived formalin-fixed paraffin-embedded gastric carcinoma tissue specimens from the histopathology laboratory. They were stained with Harris haematoxylin and eosin stain and subsequently stained with p63 and p53 monoclonal antibody immunohistochemistry. Results: Of the 166 gastric carcinoma specimens retrieved, almost a third of specimens were poorly differentiated (53/166; 32%) although the majority were moderately differentiated (68/166; 41%). P53 expression was 20/45 (44.4%), 27/68 (39.7) and 21/53 (39.6) in well-differentiated, moderately differentiated and poorly differentiated gastric carcinoma. Statistically significant positive correlation was observed between p63 and weak immunohistochemical expression (Spearman rho 0.155, Conclusion: P53 expression was more than p63 expression in different histological grades. There was no significant correlation of p53 with different histological grades but significant correlation was observed between p63 and moderately differentiated gastric carcinoma specimens. We recommend a prospective study using advanced molecular tests on fresh gastric carcinoma specimens to assess the prognostic usefulness of p53 and p63 biomarkers. What this study adds: This study provides the first Ugandan data on p53 and p63 expression in gastric carcinoma, highlighting p63's significant correlation with moderately differentiated tumours.

Indexed as

gastric carcinomahistological gradesimmunohistochemistryp53p63tissue

Identifiers

PMID42564422
PMCPMC13443881

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