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Ciammella P, Cozzi S, Borghetti P, Galaverni M, Nardone V, Ruggieri MP, Sepulcri M, Scotti V, Bruni A, Zanelli F, Piro R, Tagliavini E, Botti A, Iori F, Alì E, Bennati C, Tiseo M. Redetermination of PD-L1 expression after chemio-radiation in locally advanced PDL1 negative NSCLC patients: retrospective multicentric analysis. Front Oncol 2024; 14:1325249. [PMID: 38357196 PMCID: PMC10866304 DOI: 10.3389/fonc.2024.1325249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 01/02/2024] [Indexed: 02/16/2024] Open
Abstract
Background Chemoradiation therapy (CRT) is the treatment of choice for locally advanced non-small cell lung cancer (LA-NSCLC). Several clinical trials that combine programmed cell death 1 (PD1) axis inhibitors with radiotherapy are in development for patients with LA-NSCLC. However, the effect of CRT on tumor cells programmed cell death ligand-1 (PD-L1) expression is unknown. Methods In this multicentric retrospective study, we analyzed paired NSCLC specimens that had been obtained pre- and post-CRT. PD-L1 expression on tumor cells was studied by immunohistochemistry. The purpose of this study was to evaluate the feasibility, risk of complications, and clinical relevance of performing re-biopsy after CRT in patients with PD-L1 negative LA-NSCLC. Results Overall, 31 patients from 6 centers with PD-L1 negative LA-NSCLC were analyzed. The percentage of tumor cells with PD-L1 expression significantly increased between pre- and post-CRT specimens in 14 patients (45%). Nine patients had unchanged PD-L1 expression after CRT, in five patients the rebiopsy material was insufficient for PD-L1 analysis and in two patients no tumor cells at rebiopsy were found. The post-rebiopsy complication rate was very low (6%). All patients with positive PD-L1 re-biopsy received Durvalumab maintenance after CRT, except one patient who had a long hospitalization for tuberculosis reactivation. Median PFS of patients with unchanged or increased PD-L1 expression was 10 and 16.9 months, respectively. Conclusion CRT administration can induce PD-L1 expression in a considerable fraction of PD-L1 negative patients at baseline, allowing them receiving the maintenance Durvalumab in Europe. Hence, after a definitive CRT, PD-L1 redetermination should be considered in patients with LA-NSCLC PD-L1 negative, to have a better selection of maintenance Durvalumab candidates.
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Affiliation(s)
- Patrizia Ciammella
- Radiation Oncology Unit, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Salvatore Cozzi
- Radiation Oncology Department, Centre Lèon Bèrard, Lyon, France
| | - Paolo Borghetti
- Dipartimento di Radioterapia Oncologica, Università e ASST Spedali Civili di Brescia, Brescia, Italy
| | - Marco Galaverni
- Radiation Oncology Unit, University Hospital of Parma, Parma, Italy
| | - Valerio Nardone
- Dipartimento di Medicina di Precisione, Università degli Studi della Campania “L. Vanvitelli, Napoli, Italy
| | - Maria Paola Ruggieri
- Radiation Oncology Unit, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Matteo Sepulcri
- Radiation Oncology Unit, Veneto Institute of Oncology IOV - IRCCS, Padua, Italy
| | - Vieri Scotti
- Oncology Department, Azienda Ospedaliero-Universitaria Careggi, Florence, Italy
| | - Alessio Bruni
- Radiation Therapy Unit, Department of Oncology and Hematology, University Hospital of Modena, Modena, Italy
| | - Francesca Zanelli
- Oncology Unit, Azienda Unità Sanitaria Locale-IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Roberto Piro
- Pulmonology Unit, Azienda Unità Sanitaria Locale-IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Elena Tagliavini
- Pathology Unit, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Andrea Botti
- Medical Physics Unit, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Federico Iori
- Radiation Oncology Unit, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy
- Clinical and Experimental Medicine PhD Program, Department of Biomedical, Metabolic, and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Emanuele Alì
- Radiation Oncology Unit, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Chiara Bennati
- Department of Hematology-Onco, S Maria delle Croci Hospital, Ravenna, Italy
| | - Marcello Tiseo
- Department of Medicine and Surgery, University of Parma, Parma, Italy
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