ArticleSurgery2017
Loss of DPC4/SMAD4 expression in primary gastrointestinal neuroendocrine tumors is associated with cancer-related death after resection.
Article in Surgery, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
What it found
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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
8 citing papers in PubMed, 11 citations in OpenAlex.
- Prognostic and Predictive Significance of Selected Gene Mutations in Pancreatic and Intestinal Neuroendocrine Tumors.International journal of molecular sciences · 2026Review
- An Overview of Altered Pathways Associated with Sensitivity to Platinum-Based Chemotherapy in Neuroendocrine Tumors: Strengths and Prospects.International journal of molecular sciences · 2024Review
- Downregulation of SMAD4 protects HaCaT cells against UVB-induced damage and oxidative stress through the activation of EMT.Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology · 2024Article
- From microbiota toward gastro-enteropancreatic neuroendocrine neoplasms: Are we on the highway to hell?Reviews in endocrine & metabolic disorders · 2021Review
- MicroRNAs as the critical regulators of Doxorubicin resistance in breast tumor cells.Cancer cell international · 2021Review
- Clinical Features, Management, and Molecular Characteristics of Familial Small Bowel Neuroendocrine Tumors.Frontiers in endocrinology · 2021Review
- Genetics and Epigenetics of Gastroenteropancreatic Neuroendocrine Neoplasms.Endocrine reviews · 2019Review
- [Expressions of ΔNp63α, DPC4/Smad4 and P21 in cervical squamous cell carcinoma an their clinical significance].Nan fang yi ke da xue xue bao = Journal of Southern Medical University · 2018Article
Corrections and comments
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Authors and funding
12 authors at 1 institution in 1 country.
Funding
Abstract
backgroundGastrointestinal neuroendocrine tumors have frequent loss of DPC4/SMAD4 expression, a known tumor suppressor. The impact of SMAD4 loss on gastrointestinal neuroendocrine tumors aggressiveness or cancer-related patient outcomes is not defined. We examined the expression of SMAD4 in resected gastrointestinal neuroendocrine tumors and its impact on oncologic outcomes.
methodsPatients who underwent complete curative operative resection of gastrointestinal neuroendocrine tumors were identified retrospectively (n = 38). Immunohistochemical staining for SMAD4 expression was scored by a blinded pathologist and correlated with clinicopathologic features and oncologic outcomes.
resultsTwenty-nine percent of the gastrointestinal neuroendocrine tumors were SMAD4-negative and 71% SMAD4-positive. Median overall survival was 155 months (95% confidence interval, 102-208 months). Loss of SMAD4 was associated with both decreased median disease-free survival (28 months; 95% confidence interval, 16-40) months compared with 223 months (95% confidence interval, 3-443 months) for SMAD4-positive patients (P = .03) and decreased median disease-specific survival (SMAD4: 137 [95% confidence interval, 81-194] months versus SMAD4-positive: 204 [95% confidence interval, 143-264] months; P = .04). This translated into a decrease in median overall survival (SMAD4-negative: 125 (95% confidence interval, 51-214) months versus SMAD4-positive: 185 (95% confidence interval, 138-232) months; P = .02).
conclusionConsistent with the known biology of the DPC4/SMAD4 gene, an absence of its protein expression in primary gastrointestinal neuroendocrine tumors was negatively associated with outcomes after curative operative resection.
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