Novel Pathways and Targeted Therapies for Gastric Cancer

A special issue of Journal of Clinical Medicine (ISSN 2077-0383). This special issue belongs to the section "Gastroenterology & Hepatopancreatobiliary Medicine".

Deadline for manuscript submissions: closed (30 September 2020) | Viewed by 20635

Special Issue Editors


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Guest Editor
Department of Surgical Oncology, Medical University of Lublin, 20-080 Lublin, Poland
Interests: gastro-intestinal malignancies; molecular pathology; multimodality treatment; surgical oncology
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Guest Editor
Department of Surgical Oncology, Medical University of Gdansk, 80-210 Gdansk, Poland
Interests: surgical oncology; gastric cancer

Special Issue Information

Dear Colleagues,

New epidemiological trends in gastric cancer (GC) in Western countries include an upward shift in the location of the primary (proximal) tumor and a relative increase of advanced and diffuse type (poorly cohesive) tumors. As a result, approaches to GC surgeries are becoming more individualized. Minimally invasive surgeries which spare organs are seen as both feasible and acceptable, even in patients with advanced GC, but must be followed-up with an adequate response after neoadjuvant treatment. The new goal of preoperative systemic therapy in patients with lymph node positive GC should be to achieve a complete nodal response. The molecular division of GC comes from three various parts of the world. Similarly, there are also three different standard treatment modalities for advanced GC combining local (surgery and radiotherapy) and systemic treatments. So far, the molecular classification of GC does not imply modality treatment. However, there is more and more evidence that some special molecular types of GC can be treated in different ways than that suggested by current clinical guidelines. Advanced GC with PD-L1 positive and MSI-H may exhibit the efficacy of anti-PD-1 therapy in combination with chemotherapy. A combination of immuno- and chemotherapy may become a promising conversion therapy for some molecular profiles of advanced GC.

Gastric cancer is a complex disease and needs to be treated in a complex way using all possible novel tools to improve patients’ outcomes. An individualized multimodal diagnosis and treatment of gastric cancer changes rapidly and we have to understand and implement all of these modalities into daily clinical life.

Prof. Dr. Wojciech P. Polkowski
Dr. Karol Polom
Guest Editors

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Keywords

  • gastric cancer
  • molecular profile
  • staging
  • multimodality treatment
  • precision surgical oncology

Published Papers (4 papers)

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Research

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14 pages, 1999 KiB  
Article
Proteomics Analysis of Gastric Cancer Patients with Diabetes Mellitus
by Hugo Osório, Cátia Silva, Marta Ferreira, Irene Gullo, Valdemar Máximo, Rita Barros, Fernando Mendonça, Carla Oliveira and Fátima Carneiro
J. Clin. Med. 2021, 10(3), 407; https://doi.org/10.3390/jcm10030407 - 21 Jan 2021
Cited by 32 | Viewed by 4426
Abstract
Proteomics is a powerful approach to study the molecular mechanisms of cancer. In this study, we aim to characterize the proteomic profile of gastric cancer (GC) in patients with diabetes mellitus (DM) type 2. Forty GC tissue samples including 19 cases from diabetic [...] Read more.
Proteomics is a powerful approach to study the molecular mechanisms of cancer. In this study, we aim to characterize the proteomic profile of gastric cancer (GC) in patients with diabetes mellitus (DM) type 2. Forty GC tissue samples including 19 cases from diabetic patients and 21 cases from individuals without diabetes (control group) were selected for the proteomics analysis. Gastric tissues were processed following the single-pot, solid-phase-enhanced sample preparation approach—SP3 and enzymatic digestion with trypsin. The resulting peptides were analyzed by LC-MS Liquid Chromatography—Mass Spectrometry (LC-MS). The comparison of protein expression levels between GC samples from diabetic and non-diabetic patients was performed by label-free quantification (LFQ). A total of 6599 protein groups were identified in the 40 samples. Thirty-seven proteins were differentially expressed among the two groups, with 16 upregulated and 21 downregulated in the diabetic cohort. Statistical overrepresentation tests were considered for different annotation sets including the Gene Ontology(GO), Kyoto Encyclopedia of Genes and Genomes (KEGG), Reactome, and Disease functional databases. Upregulated proteins in the GC samples from diabetic patients were particularly enriched in respiratory electron transport and alcohol metabolic biological processes, while downregulated proteins were associated with epithelial cancers, intestinal diseases, and cell–cell junction cellular components. Taken together, these results support the data already obtained by previous studies that associate diabetes with metabolic disorders and diabetes-associated diseases, such as Alzheimer’s and Parkinson’s, and also provide valuable insights into seven GC-associated protein targets, claudin-3, polymeric immunoglobulin receptor protein, cadherin-17, villin-1, transglutaminase-2, desmoglein-2, and mucin-13, which warrant further investigation. Full article
(This article belongs to the Special Issue Novel Pathways and Targeted Therapies for Gastric Cancer)
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13 pages, 1374 KiB  
Article
Local and Central Evaluation of HER2 Positivity and Clinical Outcome in Advanced Gastric and Gastroesophageal Cancer—Results from the AGMT GASTRIC-5 Registry
by Florian Huemer, Lukas Weiss, Peter Regitnig, Thomas Winder, Bernd Hartmann, Josef Thaler, Gudrun Piringer, Clemens A. Schmitt, Wolfgang Eisterer, Hannes Gänzer, Alois Wüstner, Johannes Andel, Björn Jagdt, Hanno Ulmer, Richard Greil and Ewald Wöll
J. Clin. Med. 2020, 9(4), 935; https://doi.org/10.3390/jcm9040935 - 29 Mar 2020
Cited by 9 | Viewed by 3151
Abstract
Trastuzumab in combination with a platinum and fluorouracil is the treatment of choice for patients with advanced human epidermal growth factor receptor 2 (HER2) positive gastric cancer and gastroesophageal junction (GEJ) cancer. Pathological assessment of the HER2 status in gastric/GEJ cancer, however, still [...] Read more.
Trastuzumab in combination with a platinum and fluorouracil is the treatment of choice for patients with advanced human epidermal growth factor receptor 2 (HER2) positive gastric cancer and gastroesophageal junction (GEJ) cancer. Pathological assessment of the HER2 status in gastric/GEJ cancer, however, still remains difficult. However, it is a crucial prerequisite for optimal treatment. The GASTRIC-5 registry was designed as an observational, multi-center research initiative comparing local and central HER2 testing. HER2 status was assessed by immunohistochemistry (IHC) and in equivocal cases (IHC score 2+) by additional in-situ hybridization. Between May 2011 and August 2018, tumor samples of 183 patients were tested in local and central pathology laboratories, respectively. Central testing revealed HER2 positivity in 38 samples (21%). Discordant HER2 results were found in 12% (22 out of 183) with locally HER2 positive/centrally HER2 negative results (9%, 17 out of 183), exceeding locally HER2 negative/centrally HER2 positive results (3%, 5 out of 183). Centrally confirmed HER2 positive patients receiving trastuzumab-based palliative first-line therapy showed a longer median overall survival compared to centrally HER2 positive patients not receiving trastuzumab (17.7 months (95% CI: 10,870–24,530) vs. 6.9 months (95% CI: 3.980–9.820), p = 0.016). The findings of the GASTRIC-5 registry corroborate the challenge of HER2 testing in gastric/GEJ cancer and highlight the necessity for central quality control to optimize individual treatment options. Centrally HER2 positive patients not receiving trastuzumab had the worst outcome in a Western real-world gastric/GEJ cancer cohort. Full article
(This article belongs to the Special Issue Novel Pathways and Targeted Therapies for Gastric Cancer)
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15 pages, 604 KiB  
Review
CAR-T Cell Therapy—An Overview of Targets in Gastric Cancer
by Dominika Bębnowska, Ewelina Grywalska, Paulina Niedźwiedzka-Rystwej, Barbara Sosnowska-Pasiarska, Jolanta Smok-Kalwat, Marcin Pasiarski, Stanisław Góźdź, Jacek Roliński and Wojciech Polkowski
J. Clin. Med. 2020, 9(6), 1894; https://doi.org/10.3390/jcm9061894 - 17 Jun 2020
Cited by 46 | Viewed by 7478
Abstract
Gastric cancer (GC) is one of the most commonly diagnosed malignancies and, unfortunately, still has a high mortality rate. Recent research points to CAR-T immunotherapy as a promising treatment for this disease. Using genetically engineered T cells designed to target a previously selected [...] Read more.
Gastric cancer (GC) is one of the most commonly diagnosed malignancies and, unfortunately, still has a high mortality rate. Recent research points to CAR-T immunotherapy as a promising treatment for this disease. Using genetically engineered T cells designed to target a previously selected antigen, researchers are able to harness the natural anti-tumor activity of T cells. For therapy to be successful, however, it is essential to choose antigens that are present on tumor cells but not on healthy cells. In this review, we present an overview of the most important targets for CAR-T therapy in the context of GC, including their biologic function and therapeutic application. A number of clinical studies point to the following as important markers in GC: human epidermal growth factor receptor 2, carcinoembryonic antigen, mucin 1, epithelial cell adhesion molecule, claudin 18.2, mesothelin, natural-killer receptor group 2 member D, and folate receptor 1. Although these markers have been met with some success, the search for new and improved targets continues. Key among these novel biomarkers are the B7H6 ligand, actin-related protein 2/3 (ARP 2/3), neuropilin-1 (NRP-1), desmocollin 2 (DSC2), anion exchanger 1 (AF1), and cancer-related antigens CA-72-4 and CA-19-9. Full article
(This article belongs to the Special Issue Novel Pathways and Targeted Therapies for Gastric Cancer)
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13 pages, 881 KiB  
Review
MSI and EBV Positive Gastric Cancer’s Subgroups and Their Link with Novel Immunotherapy
by Maria Grazia Rodriquenz, Giandomenico Roviello, Alberto D’Angelo, Daniele Lavacchi, Franco Roviello and Karol Polom
J. Clin. Med. 2020, 9(5), 1427; https://doi.org/10.3390/jcm9051427 - 11 May 2020
Cited by 55 | Viewed by 5112
Abstract
Gastric cancers have been historically classified based on histomorphologic features. The Cancer Genome Atlas network reported the comprehensive identification of genetic alterations associated with gastric cancer, identifying four distinct subtypes— Epstein-Barr virus (EBV)-positive, microsatellite-unstable/instability (MSI), genomically stable and chromosomal instability. In particular, EBV-positive [...] Read more.
Gastric cancers have been historically classified based on histomorphologic features. The Cancer Genome Atlas network reported the comprehensive identification of genetic alterations associated with gastric cancer, identifying four distinct subtypes— Epstein-Barr virus (EBV)-positive, microsatellite-unstable/instability (MSI), genomically stable and chromosomal instability. In particular, EBV-positive and MSI gastric cancers seem responsive to novel immunotherapies drugs. The aim of this review is to describe MSI and EBV positive gastric cancer’s subgroups and their relationship with novel immunotherapy. Full article
(This article belongs to the Special Issue Novel Pathways and Targeted Therapies for Gastric Cancer)
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