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Mirjolet C, Merlin JL, Truc G, Noël G, Thariat J, Domont J, Sargos P, Renard-Oldrini S, Ray-Coquard I, Liem X, Chevreau C, Lagrange JL, Mahé MA, Collin F, Bonnetain F, Bertaut A, Maingon P. RILA blood biomarker as a predictor of radiation-induced sarcoma in a matched cohort study. EBioMedicine 2019; 41:420-426. [PMID: 30827931 PMCID: PMC6442988 DOI: 10.1016/j.ebiom.2019.02.031] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 02/14/2019] [Accepted: 02/15/2019] [Indexed: 11/19/2022] Open
Abstract
Purpose Radiation-induced sarcoma (RIS) is a rare but serious event. Its occurrence has been discussed during the implementation of new radiation techniques and justified appropriate radioprotection requirements. New approaches targeting intrinsic radio-sensitivity have been described, such as radiation-induced CD8 T-lymphocyte apoptosis (RILA) able to predict late radio-induced toxicities. We studied the role of RILA as a predisposing factor for RIS as a late adverse event following radiation therapy (RT). Patients and methods In this prospective biological study, a total of 120 patients diagnosed with RIS were matched with 240 control patients with cancer other than sarcoma, for age, sex, primary tumor location and delay after radiation. RILA was prospectively assessed from blood samples using flow cytometry. Results Three hundred and forty-seven patients were analyzed (118 RIS patients and 229 matched control patients). A majority (74%) were initially treated by RT for breast cancer. The mean RT dose was comparable with a similar mean (± standard deviation) for RIS (53.7 ± 16.0 Gy) and control patients (57.1 ± 15.1 Gy) (p = .053). Median RILA values were significantly lower in RIS than in control patients with respectively 18.5% [5.5–55.7] and 22.3% [3.8–52.2] (p = .0008). Thus, patients with a RILA >21.3% are less likely to develop RIS (p < .0001, OR: 0.358, 95%CI [0.221–0.599]. Conclusion RILA is a promising indicator to predict an individual risk of developing RIS. Our results should be followed up and compared with molecular and genomic testing in order to better identify patients at risk. A dedicated strategy could be developed to define and inform high-risk patients who require a specific approach for primary tumor treatment and long term follow-up.
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Affiliation(s)
- C Mirjolet
- Department of Radiation Oncology, Georges François Leclerc Cancer Center, Dijon, France
| | - J L Merlin
- Department of Biopathology, Université de Lorraine, CNRS UMR 7039 CRAN, Institut de Cancérologie de Lorraine, Nancy, France
| | - G Truc
- Department of Radiation Oncology, Georges François Leclerc Cancer Center, Dijon, France
| | - G Noël
- Department of Radiation Oncology, Paul Strauss Center, Strasbourg, France
| | - J Thariat
- Department of Radiation Oncology, Antoine Lacassagne center, Nice, France; Department of Radiation Oncology, François Baclesse Center, Caen, France
| | - J Domont
- Department of Oncology, Gustave Roussy, Villejuif, France
| | - P Sargos
- Department of Radiation Oncology, Institut Bergonié, Bordeaux, France
| | - S Renard-Oldrini
- Department of Radiation Oncology, Institut de Cancérologie de Lorraine, NANCY, France
| | - I Ray-Coquard
- Department of Radiation Oncology, Léon Berard Center, Université Claude Bernard, Lyon, France
| | - X Liem
- Department of Radiation Oncology, Oscar Lambret Center, Lille, France
| | - C Chevreau
- Department of Radiation Oncology, IUCT Oncopole, Toulouse, France
| | - J L Lagrange
- Department of Radiation Oncology, Henri Mondor Hospital, Créteil, France
| | - M A Mahé
- Department of Radiation Oncology, ICO René Gauducheau, Saint Herblain, France
| | - F Collin
- Department of Biopathology, Georges François Leclerc Cancer Center, Dijon, France
| | - F Bonnetain
- Department of Statistics, Georges François Leclerc Cancer Center, Dijon, France
| | - A Bertaut
- Department of Statistics, Georges François Leclerc Cancer Center, Dijon, France
| | - P Maingon
- Department of Radiation Oncology, Georges François Leclerc Cancer Center, Dijon, France; Department of Radiation Oncology, Sorbonne Université, GHU La Pitié Salpêtrière Charles Foix, Paris, France.
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