ArticleBMC cancer2024
Prognostic significance of low HER2 expression in gastric cancer: a retrospective, single-center analysis.
Article in BMC cancer, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 1 of them a synthesis that pooled it.
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Who cites it
5 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Bibliometric analysis of tumor marker application in gastric cancer diagnosis from 2019 to 2024.Frontiers in medicine · 2025Pooled it
- Clinicopathological features and prognoses of HER-2-positive gastric cancer.Molecular and clinical oncology · 2026Article
- Survival Outcomes in ERBB2-Low vs ERBB2-Null Advanced Gastric Cancer.JAMA network open · 2026Observational
- The Effect of HER2 Status on Gastric Cancer Survival and the Clinical Implications of the HER2-Low Definition: A Retrospective Study.Medicina (Kaunas, Lithuania) · 2025Article
- Deciphering prognostic markers in gastric signet ring cell carcinoma: Human epidermal growth factor receptor 2 and other key factors.World journal of clinical oncology · 2025Article
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Authors and funding
10 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionMutated human epidermal growth factor receptor 2 (HER2) is an oncogene with critical pathogenic roles in breast cancer. HER2-low-positive breast cancer is a recently described subtype. We aimed to explore the clinical and molecular characteristics of gastric cancer with low HER2 expression, drawing on recent developments in breast cancer subtypes. MATERIALS AND
methodsThis retrospective study involved 129 patients with HER2-non-amplified gastric cancer treated in Iwate prefectural Iwai Hospital from 2013 to 2019. Tumors were classified as HER2-null or low-positive based on immunohistochemistry score 0 or 1 + or 2 + with HER2 negativity in situ hybridization, respectively. Statistical analyses, including Kaplan-Meier analyses and Cox proportional hazards model were conducted.
resultsLow HER2 expression was present in 26% (33/129) of the patients. Clinicopathological characteristics were not significantly different between the HER2-low and null groups. Kaplan-Meier analysis of overall survival was significantly longer in the HER2-low group than in the HER2-null group (P = 0.01). In multivariate Cox regression analysis, HER2-null status was associated with worse survival (hazard ratio 3.01; 95% confidence interval 1.18-7.65; and P = 0.02).
conclusionThis study highlights the prognostic importance of low HER2 expression in gastric cancer, similar to that observed in HER2-low-positive breast cancer, and suggests reclassification of gastric cancer to improve personalized treatment. Future studies should elucidate the molecular underpinnings of low HER2 expression in gastric cancer to guide novel therapeutic strategies and improve outcomes.
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