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Giommoni E, Lavacchi D, Tirino G, Fornaro L, Iachetta F, Pozzo C, Satolli MA, Spallanzani A, Puzzoni M, Stragliotto S, Sisani M, Formica V, Giovanardi F, Strippoli A, Prisciandaro M, Di Donato S, Pompella L, Pecora I, Romagnani A, Fancelli S, Brugia M, Pillozzi S, De Vita F, Antonuzzo L. Results of the observational prospective RealFLOT study. BMC Cancer 2021; 21:1086. [PMID: 34625033 PMCID: PMC8499559 DOI: 10.1186/s12885-021-08768-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [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: 02/02/2021] [Accepted: 07/26/2021] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Perioperative FLOT (5-fluorouracil, oxaliplatin and docetaxel) has recently become the gold standard treatment for fit patients with operable gastric (GC) or gastroesophageal (GEJ) adenocarcinoma, getting a 5-year overall survival (OS) of 45%, over 23% with surgery alone. METHODS RealFLOT is an Italian, multicentric, observational trial, collecting data from patients with resectable GC or GEJ adenocarcinoma treated with perioperative FLOT. Aim of the study was to describe feasibility and safety of FLOT, pathological complete response rate (pCR), surgical outcomes and overall response rate (ORR) in an unselected real-world population. Additional analyses evaluated the correlation between pCR and survival and the prognostic role of microsatellite instability (MSI) status. RESULTS Of 206 patients enrolled that received perioperative FLOT at 15 Italian centers, 124 (60.2%) received at least 4 full-dose cycles, 190 (92.2%) underwent surgery, and 142 (68.9%) started the postoperative phase. Among patients who started the postoperative phase, 105 (51.0%) received FLOT, while 37 (18%) received de-intensified regimens, depending on clinical condition or previous toxicities. pCR was achieved in 7.3% of cases. Safety profile was consistent with literature. Neutropenia was the most common G 3-4 adverse event (AE): 19.9% in the preoperative phase and 16.9% in the postoperative phase. No toxic death was observed and 30-day postoperative mortality rate was 1.0%. ORR was 45.6% and disease control rate (DCR) was 94.2%. Disease-free survival (DFS) and OS were significantly longer in case of pCR (p = 0.009 and p = 0.023, respectively). A trend towards better DFS was observed among MSI-H patients. CONCLUSIONS These real-world data confirm the feasibility of FLOT in an unselected population, representative of the clinical practice. pCR rate was lower than expected, nevertheless we confirm pCR as a predictive parameter of survival. In addition, MSI-H status seems to be a positive prognostic marker also in patients treated with taxane-containing triplets.
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Affiliation(s)
| | | | - Giuseppe Tirino
- Division of Medical Oncology, Department of Precision Medicine, University of Study of Campania "L. Vanvitelli", Naples, Italy
| | - Lorenzo Fornaro
- Medical Oncology, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy
| | - Francesco Iachetta
- Medical Oncology Unit, Clinical Cancer Center, AUSL-IRCCS, Reggio Emilia, Italy
| | - Carmelo Pozzo
- Medical Oncology, Fondazione Policlinico Universitario "A. Gemelli", IRCCS, Rome, Italy
| | | | | | - Marco Puzzoni
- Medical Oncology Department, University Hospital, University of Cagliari, Cagliari, Italy
| | - Silvia Stragliotto
- Oncology Unit - Dipartimento di Oncologia Clinica e Sperimentale Istituto Oncologico Veneto IOV-IRCCS, Padua, Italy
| | | | - Vincenzo Formica
- Internal Medicine Department "Tor Vergata" University Hospital, Rome, Italy
| | - Filippo Giovanardi
- Medical Oncology, Azienda Unità Sanitaria Locale-IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Antonia Strippoli
- Medical Oncology, Fondazione Policlinico Universitario "A. Gemelli", IRCCS, Rome, Italy
| | - Michele Prisciandaro
- Medical Oncology Department, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Samantha Di Donato
- Medical Oncology, Department Nuovo Ospedale-Santo Stefano Istituto Toscano Tumori, Prato, Italy
| | - Luca Pompella
- Division of Medical Oncology, Department of Precision Medicine, University of Study of Campania "L. Vanvitelli", Naples, Italy
| | - Irene Pecora
- Medical Oncology, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy
| | | | | | - Marco Brugia
- Medical Oncology Unit, AOU Careggi, Florence, Italy
| | | | - Ferdinando De Vita
- Division of Medical Oncology, Department of Precision Medicine, University of Study of Campania "L. Vanvitelli", Naples, Italy
| | - Lorenzo Antonuzzo
- Medical Oncology Unit, AOU Careggi, Florence, Italy. .,Department of Experimental and Clinical Medicine, University of Firenze, Florence, Italy. .,Clinical Oncology Unit, AOU Careggi, Largo Brambilla 3, 50134, Florence, Italy.
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