Performance and clinical utility of two targeted multigene panels for GIST molecular characterization
Molecular analysis is mandatory in the diagnostic work-up of gastrointestinal stromal tumors (GISTs). Indeed, it is essential for clinical decisions, from patients' selection for systemic treatment to identifying unrecognized syndromic conditions. Since GISTs are recognized as a heterogeneous family of different clinical entities, molecular analysis should also require a feasible, rapid, and reliable diagnostic workflow. Herein, we present our experience on the performance and clinical utility of two lab-developed multigene-NGS panels specifically built for GIST analysis. Among 163 analyzed GISTs, 72.4% carried KIT mutations while 11.0% were PDGFRA-mutant. Among putative KIT/PDGFRA WT cases that arrived at our attention from an external analysis, nine of 10 were found carrying either KIT or PDGFRA pathogenic mutations by our panel. On 26 KIT/PDGFRA/BRAF WT patients at the first level, the second level panel identified NF1 or SDHA mutations in 16 cases, while 10 patients did not display any mutation, except for two of them found as carriers of SDHC epimutation. This optimized NGS diagnostic approach helps to characterize the molecular profiles of GIST and drastically reduces the number of truly non-KIT and non-PDGFRA-addicted GIST cases.
Authors
- Antonio De Leo (ORCID: https://orcid.org/0000-0002-3761-5135)
- Maria Concetta Nigro (ORCID: https://orcid.org/0000-0003-3834-6122)
- Elisabetta Setola (ORCID: https://orcid.org/0000-0001-9704-3290)
- Maria Abbondanza Pantaleo (ORCID: https://orcid.org/0000-0002-0177-6957)
- Angela Dalia Ricci (ORCID: https://orcid.org/0000-0002-0701-6764)
- Dario de Biase (ORCID: https://orcid.org/0000-0002-0609-8817)
- Giovanni Grignani (ORCID: https://orcid.org/0000-0001-5515-569X)
- Massimo Del Gaudio (ORCID: https://orcid.org/0000-0003-2754-1627)
- Elena Fumagalli (ORCID: https://orcid.org/0000-0003-4814-7637)
- Thais Maloberti (ORCID: https://orcid.org/0000-0002-8306-4653)
- Marco Grillini (ORCID: https://orcid.org/0000-0003-2506-7239)
- Fabio Gelsomino (ORCID: https://orcid.org/0000-0001-7979-4795)
- Livia Gozzellino
- Annalisa Astolfi (ORCID: https://orcid.org/0000-0002-2732-0747)
- Bruno Vincenzi (ORCID: https://orcid.org/0000-0001-8222-9025)
- S. Aliberti (ORCID: https://orcid.org/0000-0001-6990-9341)
- Annalisa Altimari (ORCID: https://orcid.org/0000-0001-9944-2455)
- Antonella Brunello (ORCID: https://orcid.org/0000-0003-2583-5226)
- Alice Costa (ORCID: https://orcid.org/0000-0003-0809-2512)
- Maria Giulia Pirini
- Margherita Nannini (ORCID: https://orcid.org/0000-0002-2103-1960)
- Giovanni Tallini (ORCID: https://orcid.org/0000-0003-0113-6682)
Institutions
- University of Modena and Reggio Emilia (IT)
- Università Campus Bio-Medico (IT)
- Istituto Oncologico Veneto (IT)
- Azienda USL di Bologna (IT)
- Candiolo Cancer Institute (IT)
- Gastroenterology Hospital "Saverio de Bellis" (IT)
- Fondazione IRCCS Istituto Nazionale dei Tumori (IT)
- European Institute of Oncology (IT)
- University of Bologna (IT)
Publication Details
- Journal
- Scientific Reports
- Published
- 2025-12-17
- DOI
- https://doi.org/10.1038/s41598-025-30548-7
- Primary Topic
- Gastrointestinal Tumor Research and Treatment
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- European Commission
- Università di Bologna