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DE Felice F, Valentini V, DE Vincentiis M, DI Gioia CRT, Musio D, Tummulo AA, Ricci LI, Converti V, Mezi S, Messineo D, Tenore G, Della Monaca M, Ralli M, Vullo F, Botticelli A, Brauner E, Priore P, Umberto R, Marchetti P, Della Rocca C, Polimeni A, Tombolini V. Prediction of Recurrence by Machine Learning in Salivary Gland Cancer Patients After Adjuvant (Chemo)Radiotherapy. In Vivo 2021; 35:3355-3360. [PMID: 34697169 DOI: 10.21873/invivo.12633] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/07/2021] [Accepted: 08/09/2021] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM To investigate survival outcomes and recurrence patterns using machine learning in patients with salivary gland malignant tumor (SGMT) undergoing adjuvant chemoradiotherapy (CRT). PATIENTS AND METHODS Consecutive SGMT patients were identified, and a data set included nine predictor variables and a dependent variable [disease-free survival (DFS) event] was standardized. The open-source R software was used. Survival outcomes were estimated by the Kaplan-Meier method. The random forest approach was used to select the important explanatory variables. A classification tree that optimally partitioned SGMT patients with different DFS rates was built. RESULTS In total, 54 SGMT patients were included in the final analysis. Five-year DFS was 62.1%. The top two important variables identified were pathologic node (pN) and pathologic tumor (pT). Based on these explanatory variables, patients were partitioned in three groups, including pN0, pT1-2 pN+ and pT3-4 pN+ with 26%, 38% and 75% probability of recurrence, respectively. Accordingly, 5-year DFS rates were 73.7%, 57.1% and 34.3%, respectively. CONCLUSION The proposed decision tree algorithm is an appropriate tool to partition SGMT patients. It can guide decision-making and future research in the SGMT field.
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Affiliation(s)
- Francesca DE Felice
- Department of Radiotherapy, Policlinico Umberto I "Sapienza" University of Rome, Rome, Italy;
| | - Valentino Valentini
- Department of Oral and Maxillo Facial Sciences, Policlinico Umberto I, "Sapienza" University of Rome, Rome, Italy
| | - Marco DE Vincentiis
- Department of Oral and Maxillo Facial Sciences, Policlinico Umberto I, "Sapienza" University of Rome, Rome, Italy
| | - Cira Rosaria Tiziana DI Gioia
- Department of Radiological Sciences, Oncology and Pathology, Policlinico Umberto I "Sapienza" University of Rome, Rome, Italy
| | - Daniela Musio
- Department of Radiotherapy, Policlinico Umberto I "Sapienza" University of Rome, Rome, Italy
| | - Aida Angela Tummulo
- Department of Radiotherapy, Policlinico Umberto I "Sapienza" University of Rome, Rome, Italy
| | - Ludovica Isabella Ricci
- Department of Radiotherapy, Policlinico Umberto I "Sapienza" University of Rome, Rome, Italy
| | - Valeria Converti
- Department of Radiotherapy, Policlinico Umberto I "Sapienza" University of Rome, Rome, Italy
| | - Silvia Mezi
- Department of Medical Oncology B, Policlinico Umberto I "Sapienza" University of Rome, Rome, Italy
| | - Daniela Messineo
- Department of Radiological Sciences, Oncology and Pathology, Policlinico Umberto I "Sapienza" University of Rome, Rome, Italy
| | - Gianluca Tenore
- Department of Oral and Maxillo Facial Sciences, Policlinico Umberto I, "Sapienza" University of Rome, Rome, Italy
| | - Marco Della Monaca
- Department of Oral and Maxillo Facial Sciences, Policlinico Umberto I, "Sapienza" University of Rome, Rome, Italy
| | - Massimo Ralli
- Department of Oral and Maxillo Facial Sciences, Policlinico Umberto I, "Sapienza" University of Rome, Rome, Italy
| | - Francesco Vullo
- Department of Radiological Sciences, Oncology and Pathology, Policlinico Umberto I "Sapienza" University of Rome, Rome, Italy
| | - Andrea Botticelli
- Department of Clinical and molecular oncology, Policlinico Umberto I "Sapienza" University of Rome, Rome, Italy
| | - Edoardo Brauner
- Department of Oral and Maxillo Facial Sciences, Policlinico Umberto I, "Sapienza" University of Rome, Rome, Italy
| | - Paolo Priore
- Department of Oral and Maxillo Facial Sciences, Policlinico Umberto I, "Sapienza" University of Rome, Rome, Italy
| | - Romeo Umberto
- Department of Oral and Maxillo Facial Sciences, Policlinico Umberto I, "Sapienza" University of Rome, Rome, Italy
| | - Paolo Marchetti
- Department of Clinical and molecular oncology, Policlinico Umberto I "Sapienza" University of Rome, Rome, Italy
| | - Carlo Della Rocca
- Department of Medical Oncology B, Policlinico Umberto I "Sapienza" University of Rome, Rome, Italy
| | - Antonella Polimeni
- Department of Oral and Maxillo Facial Sciences, Policlinico Umberto I, "Sapienza" University of Rome, Rome, Italy
| | - Vincenzo Tombolini
- Department of Radiotherapy, Policlinico Umberto I "Sapienza" University of Rome, Rome, Italy
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