ArticleWorld journal of surgical oncology2022
Temporal heterogeneity of HER2 expression in metastatic gastric cancer: a case report.
Article in World journal of surgical oncology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
4 citing papers in PubMed, 5 citations in OpenAlex.
- Role of microRNA-136 inWorld journal of gastrointestinal oncology · 2026Article
- Biomarkers in gastroesophageal cancer 2025: an updated consensus statement by the Spanish Society of Medical Oncology (SEOM) and the Spanish Society of Pathology (SEAP).Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2025Review
- Complete preclinical evaluation of the novel antibody mimetic Nanofitin-IRDye800CW for diverse non-invasive diagnostic applications in the management of HER-2 positive tumors.Scientific reports · 2025Article
- Affibody PET Imaging of HER2-Expressing Cancers as a Key to Guide HER2-Targeted Therapy.Biomedicines · 2024Review
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Gastric cancer is a disease with high heterogeneity, and this heterogeneity may result in an uneven distribution of subclones with varied genetic properties at disease locations (spatial heterogeneity) or temporal changes in subclonal composition (temporal heterogeneity). We present the case of a 69-year-old woman with metastatic gastric cancer who presented for axillary lymph node enlargement and underwent axillary lymphadenectomy. Pathological evidence showed human epidermal growth factor receptor 2 (HER2)(3+). Abdominal computed tomography revealed a mass in the gastric body, gastroscopic biopsy showed HER2(3+). After tumor shrinkage by preoperative translational chemotherapy (oxaliplatin, calcium folate, fluorouracil) and targeted therapy (trastuzumab), she had laparoscopic-assisted total gastrectomy. However, HER2 immunohistochemistry was found to be diffusely negative in the surgically removed tissue, and there was no evidence of HER2 amplification in the whole exon sequencing either. After 10 months of trastuzumab treatment, her disease progressed. Although trastuzumab treatment was initially beneficial, the residual HER2-negative subclones may cause tumor recurrence and metastasis due to temporal heterogeneity, as shown in this case.
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