{"title":"Programmed Death Ligand-1 Expression in Gastric Cancer Cases in Zambia.","authors":"Husna Munshi, Chibamba Mumba, Mupeta Songwe, Violet Kayamba","doi":"10.53974/unza.jabs.9.2.1492","DOIUrl":"10.53974/unza.jabs.9.2.1492","url":null,"abstract":"<p><p>Gastric cancer is a highly fatal disease in Zambia due to delayed diagnosis, aggressiveness of the disease and ineffective treatment. Programmed death ligand-1 is a key biomarker of gastric cancer, linked to immune evasion and response to anti-Programmed death ligand-1 therapies. This study aimed to evaluate the expression of in gastric cancer cases and its association with various clinicopathological prognostic factors in Zambia. This pilot study utilized archived formalin-fixed, paraffin-embedded tissue blocks from patients diagnosed with gastric cancer at the University Teaching Hospitals in Lusaka, Zambia. A total of 41 gastric cancer samples were examined, with 65.9% female (27) and 34.1% male (14), and a median age of 63 years (interquatile range: 56-76). The slides were stained with Haematoxylin and Eosin, followed by immunohistochemical analysis to assess Programmed Death Ligand-1 expression, which was evaluated using a combined positive scoring system. Statistical analysis was conducted using STATA to evaluate the data version 15. Six patients (14.6%) exhibited positive expression of Programmed Death Ligand-1, with a combined positive score of 1 or higher. However, our analysis did not reveal any significant associations between PD-L1 expression and any of the clinicopathological variables assessed. We found that a small proportion (14.6 %) of GCs in our population expresses Programmed Death Ligand-1, a potentially therapeutically actionable patient group.</p>","PeriodicalId":520938,"journal":{"name":"Journal of agricultural and biomedical sciences","volume":"9 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12245711/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144629444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}