ArticleModern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc2020
PD-L1 in small bowel adenocarcinoma is associated with etiology and tumor-infiltrating lymphocytes, in addition to microsatellite instability.
Article in Modern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 23 papers, 1 of them a synthesis that pooled it.
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Who cites it
23 citing papers in PubMed, 1 synthesis or guideline pooled it, 48 citations in OpenAlex.
- Small bowel adenocarcinoma in Crohn's disease: a systematic review and meta-analysis of the prevalence, manifestation, histopathology, and outcomes.International journal of colorectal disease · 2022Pooled it
- An Open Source Automated Tumor Infiltrating Lymphocytes Algorithm for Prognosis in Primary Small Bowel Adenocarcinoma Using Routine Hematoxylin and Eosin Stained Sections.Cancer medicine · 2026Article
- GDF10 Regulates Iron-Dependent Lipid Oxidation in Colorectal Cancer Cells Through Interaction With IGF2.Biotechnology and applied biochemistry · 2025Article
- Medullary carcinomas of the nonampullary small intestine: association with coeliac disease, mismatch repair deficiency, PD-L1 expression, and favourable prognosis.Histopathology · 2025Article
- A small bowel adenocarcinoma harboring a DDR2 mutation in a celiac patient.Clinical journal of gastroenterology · 2024Article
- Tertiary lymphoid structures' pattern and prognostic value in primary adenocarcinoma of jejunum and ileum.World journal of surgical oncology · 2024Article
- Immune signature of small bowel adenocarcinoma and the role of tumor microenvironment.World journal of gastroenterology · 2024Article
- Alterations in p53, Microsatellite Stability and Lack of MUC5AC Expression as Molecular Features of Colorectal Carcinoma Associated with Inflammatory Bowel Disease.International journal of molecular sciences · 2023Article
- Molecular Landscape and Association With Crohn Disease of Poorly Cohesive Carcinomas of the Nonampullary Small Bowel.American journal of clinical pathology · 2023Article
- Malignant complications of celiac disease: a case series and review of the literature.Journal of medical case reports · 2022Review
- PD-L1 evaluation in the gastrointestinal tract: from biological rationale to its clinical application.Pathologica · 2022Review
- Review
- Prognostic relevance and putative histogenetic role of cytokeratin 7 and MUC5AC expression in Crohn's disease-associated small bowel carcinoma.Virchows Archiv : an international journal of pathology · 2021Article
- Association between intestinal neoplasms and celiac disease: A review.World journal of gastrointestinal oncology · 2021Review
- Review
- Prognostic Role of Mismatch Repair Status, Histotype and High-Risk Pathologic Features in Stage II Small Bowel Adenocarcinomas.Annals of surgical oncology · 2021Article
- Case Report: Molecular Features and Treatment Options for Small Bowel Adenocarcinoma.Frontiers in oncology · 2021Article
- Article
- Comment on Jun, S.Y.; et al. "Tumor Budding and Poorly Differentiated Clusters in Small Intestinal Adenocarcinoma"Cancers · 2020Article
- Current prognostic and predictive biomarkers for gastrointestinal tumors in clinical practice.Pathologica · 2020Review
Corrections and comments
- Erratum issued
Authors and funding
70 authors at 20 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Small bowel adenocarcinomas (SBAs) are often associated with poor prognosis and have limited therapeutic options. Programmed cell death protein-1 (PD-1)/programmed cell death ligand 1 (PD-L1) pathway blockade is an effective treatment in many microsatellite instability-high (MSI-H) solid tumors. We aimed at investigating PD-L1 and PD-1 expression in non-hereditary, non-ampullary SBAs, associated with celiac disease (CeD), Crohn's disease (CrD), or sporadic, recruited through the Small Bowel Cancer Italian Consortium. We assessed PD-L1 and PD-1 by immunohistochemistry in a series of 121 surgically resected SBAs, including 34 CeD-SBAs, 49 CrD-SBAs, and 38 sporadic SBAs. PD-L1 and PD-1 expression was correlated with several clinico-pathological features, such as the etiology, microsatellite instability status, and tumor-infiltrating lymphocyte (TIL) density. The prevalence of PD-L1 positivity according to combined positive score (CPS) was 26% in the whole cohort of SBAs, with significantly (p = 0.001) higher percentage (35%) in both CeD-SBAs and CrD-SBAs in comparison with sporadic SBAs (5%). CPS ≥ 1 SBAs were significantly (p = 0.013) more frequent in MSI-H cases (41%) than in non-MSI-H ones (18%); however, 15 CPS ≥ 1 microsatellite stable SBAs were also identified. CPS ≥ 1 SBAs showed higher TIL and PD-1
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