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Incorvaia L, Badalamenti G, Fanale D, Vincenzi B, Luca ID, Algeri L, Barraco N, Brando C, Bonasera A, Bono M, Castiglia M, Cancelliere D, Cani M, Rita Corsini L, Fiorino A, Galvano A, Pedone E, Perez A, Pivetti A, Graceffa G, Pantuso G, Cabibi D, Russo A, Bazan V. Not all KIT 557/558 codons mutations have the same prognostic influence on recurrence-free survival: breaking the exon 11 mutations in gastrointestinal stromal tumors (GISTs). Ther Adv Med Oncol 2021; 13:17588359211049779. [PMID: 34616493 PMCID: PMC8488518 DOI: 10.1177/17588359211049779] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Accepted: 09/08/2021] [Indexed: 11/17/2022] Open
Abstract
Background: Although the gastrointestinal stromal tumor (GIST) genotype is not currently
included in risk-stratification systems, a growing body of evidence shows
that the pathogenic variant (PV) type and codon location hold a strong
prognostic influence on recurrence-free survival (RFS). This information has
particular relevance in the adjuvant setting, where an accurate
prognostication could help to better identify high-risk tumors and guide
clinical decision-making. Materials and Methods: Between January 2005 and December 2020, 96 patients with completely resected
GISTs harboring a KIT proto-oncogene receptor tyrosine kinase
(KIT) exon 11 PV were included in the study. We
analyzed the type and codon location of the PV according to
clinicopathological characteristics and clinical outcome; the metastatic
sites in relapsed patients were also investigated. Results: Tumors harboring a KIT exon 11 deletion or
deletion/insertion involving the 557 and/or 558 codons, showed a more
aggressive clinical behavior compared with tumors carrying
deletion/deletion/insertion in other codons, or tumors with
duplication/insertion/single-nucleotide variant (SNV) (7-year RFS: 50%
versus 73.1% versus 88.2%,
respectively; p < 0.001). Notably, among 18 relapsed
patients with 557 and/or 558 deletion or deletion/insertion, 14 patients
(77.8%) harbored deletions simultaneously involving 557 and 558 codons,
while only 4 patients (22.2%) harbored deletions involving only 1 of the
557/558 codons. Thus, when 557 or 558 deletions occurred separately, the
tumor showed a prognostic behavior similar to the GIST carrying deletions
outside the 557/558 position. Remarkably, patients with GISTs stratified as
intermediate risk, but carrying the 557/558 deletion, showed a similar
outcome to the high-risk patients with tumors harboring deletions in codons
other than 557/558, or duplication/insertion/SNV. Conclusion: Our data support the inclusion of the PV type and codon location in routine
risk prediction models, and suggest that intermediate-risk patients whose
GISTs harbor 557/558 deletions may also need to be treated with adjuvant
imatinib like the high-risk patients.
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Affiliation(s)
- Lorena Incorvaia
- Department of Biomedicine, Neuroscience and Advanced Diagnostics (Bi.N.D.), Section of Medical Oncology, University of Palermo, Via del Vespro 129, Palermo, 90127, Italy
| | - Giuseppe Badalamenti
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Daniele Fanale
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Bruno Vincenzi
- Department of Medical Oncology, Biomedical Campus, University of Rome, Rome, Italy
| | - Ida De Luca
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Laura Algeri
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Nadia Barraco
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Chiara Brando
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Annalisa Bonasera
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Marco Bono
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Marta Castiglia
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Daniela Cancelliere
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Massimiliano Cani
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Lidia Rita Corsini
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Alessia Fiorino
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Antonio Galvano
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Erika Pedone
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Alessandro Perez
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Alessia Pivetti
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Giuseppa Graceffa
- Department of Surgical, Oncological and Oral Sciences, Section of General and Oncological Surgery, University of Palermo, Palermo, Italy
| | - Gianni Pantuso
- Department of Surgical, Oncological and Oral Sciences, Section of General and Oncological Surgery, University of Palermo, Palermo, Italy
| | - Daniela Cabibi
- Department of Health Promotion, Mother and Child Care, University of Palermo, Palermo, Italy
| | - Antonio Russo
- Department of Surgical, Oncological and Oral Sciences, Section of Medical Oncology, University of Palermo, Palermo, Italy
| | - Viviana Bazan
- Department of Biomedicine, Neuroscience and Advanced Diagnostics (Bi.N.D.), Section of Medical Oncology, University of Palermo, Palermo, Italy
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