ArticleIndian journal of gastroenterology : official journal of the Indian Society of Gastroenterology2026
Human epidermal growth factor receptor-2/neu expression in gallbladder cancer is significantly associated with clinicopathological parameters and survival.
Article in Indian journal of gastroenterology : official journal of the Indian Society of Gastroenterology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Abstract
backgroundAnti-human epidermal growth factor receptor-2 (Her-2/neu) target therapy has substantially improved the disease outcome of patients with breast and gastric/gastroesophageal cancers characterized by Her-2/neu overexpression and/or amplification. Consequently, evaluating Her-2/neu expression in other cancers to predict response to Her-2/neu targeting agents emerges as a crucial approach. We aimed at investigating the positivity rate of this receptor in gallbladder cancer (GBC) and assess the relationship between Her-2/neu status, clinicopathological parameters and survival to identify patients who would benefit most from anti-Her-2/neu-targeted therapy. The Her-2/neu expression was correlated with clinicopathological parameters and survival of GBC cases.
methodsTotal 235 surgically resected and histopathologically proven primary GBC cases were collected over a five-year period from January 1, 2017, to December 31, 2020. Her-2/neu expression in these cases was analyzed using immunohistochemistry (IHC) and fluorescence in situ hybridization (FISH).
resultsEmploying testing algorithms (IHC scoring based on gastric cancer criteria, followed by FISH in equivocal cases), Her-2/neu positivity was identified in 43 (18.29%) GBC cases and was significantly associated with grade-I tumors, tumor stage > T2, perineural invasion, surgical margin positivity and advanced Tumor-Node-Metastasis (TNM) stage. The mean survival time for Her-2/neu-positive cases was 14 months (SE, 1.1; 95% CI, 11.7-16.06), while it was 20 months (SE, 0.69; 95%CI, 18.1-20.9) for Her-2-negative cases (p < 0.001).
conclusionHer-2/neu is expressed in about one-fifth of GBC patients and is significantly associated with tumor behavior and patient survival. Utilizing novel targeted agents may hold the key to improving the prognosis of these patients.
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