1
|
Molinari C, Tedaldi G, Rebuzzi F, Morgagni P, Capelli L, Ravaioli S, Tumedei MM, Scarpi E, Tomezzoli A, Bernasconi R, Ambrosio MR, D'Ignazio A, Solaini L, Limarzi F, Ercolani G, Martinelli G, Ulivi P, Saragoni L. Early Gastric Cancer: identification of molecular markers able to distinguish submucosa-penetrating lesions with different prognosis. Gastric Cancer 2021; 24:392-401. [PMID: 33156452 DOI: 10.1007/s10120-020-01135-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 10/18/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND Early Gastric Cancer (EGC) reaches 25% of the gastric cancers surgically treated in some areas of Northeastern Italy and is usually characterized by a good prognosis. However, among EGCs classified according to Kodama's criteria, Pen A subgroup is characterized by extensive submucosal invasion, lymph node metastases and worse prognosis, whereas Pen B subgroup by better prognosis. The aim of the study was to characterize the differences between Pen A, Pen B and locally advanced gastric cancer (T3N0) in order to identify biomarkers involved in aggressiveness and clinical outcome. METHODS We selected 33 Pen A, 34 Pen B and 20 T3N0 tumors and performed immunohistochemistry of mucins, copy number variation analysis of a gene panel, microsatellite instability (MSI), TP53 mutation and loss of heterozygosity (LOH) analyses. RESULTS Pen A subgroup was characterized by MUC6 overexpression (p = 0.021). Otherwise, the Pen B subgroup was significantly associated with the amplification of GATA6 gene (p = 0.002). The higher percentage of MSI tumors was observed in T3N0 group (p = 0.002), but no significant differences between EGC types were found. Finally, TP53 gene analysis showed that 32.8% of Pen tumors have a mutation in exons 5-8 and 50.0% presented LOH. Co-occurrence of TP53 mutation and LOH mainly characterized Pen A tumors (p = 0.022). CONCLUSIONS Our analyses revealed that clinico-pathological parameters, microsatellite status and frequency of TP53 mutations do not seem to distinguish Pen subgroups. Conversely, the amplification of GATA6 was associated with Pen B, as well as the overexpression of MUC6 and the TP53mut/LOH significantly characterized Pen A.
Collapse
Affiliation(s)
- Chiara Molinari
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, via P. Maroncelli 40, 47014, Meldola, FC, Italy
| | - Gianluca Tedaldi
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, via P. Maroncelli 40, 47014, Meldola, FC, Italy.
| | - Francesca Rebuzzi
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, via P. Maroncelli 40, 47014, Meldola, FC, Italy
| | - Paolo Morgagni
- Department of Surgery, Morgagni-Pierantoni Hospital, Forlì, Italy
| | - Laura Capelli
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, via P. Maroncelli 40, 47014, Meldola, FC, Italy
| | - Sara Ravaioli
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, via P. Maroncelli 40, 47014, Meldola, FC, Italy
| | - Maria Maddalena Tumedei
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, via P. Maroncelli 40, 47014, Meldola, FC, Italy
| | - Emanuela Scarpi
- Biostatistics and Clinical Trials Unit, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, Meldola, Italy
| | - Anna Tomezzoli
- Department of Pathology, University of Verona, Verona, Italy
| | | | - Maria Raffaella Ambrosio
- Pathology Unit, University of Siena, Siena, Italy.,Pathology Unit, Azienda USL Toscana Nord-Ovest, Pisa, Italy
| | | | - Leonardo Solaini
- Department of Surgery, Morgagni-Pierantoni Hospital, Forlì, Italy.,Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Francesco Limarzi
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, via P. Maroncelli 40, 47014, Meldola, FC, Italy
| | - Giorgio Ercolani
- Department of Surgery, Morgagni-Pierantoni Hospital, Forlì, Italy
| | - Giovanni Martinelli
- Department of Medical Oncology, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, Meldola, Italy
| | - Paola Ulivi
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, via P. Maroncelli 40, 47014, Meldola, FC, Italy
| | - Luca Saragoni
- Pathology Unit, Morgagni-Pierantoni Hospital, Forlì, Italy
| |
Collapse
|