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Corso G, Criscitiello C, Nicosia L, Pesapane F, Vicini E, Magnoni F, Sibilio A, Zanzottera C, De Scalzi AM, Mannucci S, Marabelli M, Calvello M, Feroce I, Zagami P, Porta FM, Toesca A, Tarantino P, Nicolò E, Mazzarol G, La Vecchia C, Bonanni B, Leonardi MC, Veronesi P, Fusco N. Metaplastic breast cancer: an all-round multidisciplinary consensus. Eur J Cancer Prev 2023; 32:348-363. [PMID: 37021548 DOI: 10.1097/cej.0000000000000794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
Metaplastic breast cancer (MpBC) is a rare and aggressive histologic subtype of breast cancer (BC) characterized by the presence of at least two cellular types, commonly epithelial and mesenchymal components. Despite growing evidence that MpBC is a unique entity, it has long been treated as a variant of nonspecial type (NST) BC. MpBC typically shows the phenotype of triple-negative breast cancer (TNBC), but compared to NST-TNBC, it is a relatively chemorefractory tumor associated with worse outcomes. Therefore, there is an urgent need to develop management guidelines specifically for MpBC to improve the prognosis of patients with early MpBC. This expert consensus aims to guide diagnosis and standardize clinical management of early MpBC among treating physicians. We provide guidance on the challenging radiological and pathological diagnosis of MpBC. Evidence on the involvement of genetic predisposition in the development of MpBC is also explored. We emphasize the importance of a multidisciplinary approach for the treatment of patients with early MpBC. The optimal surgery and radiotherapy approach is presented, as well as the opportunity offered by novel therapeutic approaches to increase treatment response in this chemoresistant subtype. Appropriate management of patients with MpBC is critical to reduce the high risk of local and distant recurrence that characterizes this disease.
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Affiliation(s)
- Giovanni Corso
- Division of Breast Surgery, European Institute of Oncology (IEO), IRCCS
- Department of Oncology and Hemato-Oncology, University of Milan
- European Cancer Prevention Organization (ECP)
| | - Carmen Criscitiello
- Department of Oncology and Hemato-Oncology, University of Milan
- Division of New Drugs and Early Drug Development for Innovative Therapies, European Institute of Oncology (IEO), IRCCS
| | - Luca Nicosia
- Breast Imaging Division, Radiology Department, European Institute of Oncology (IEO), IRCCS, Milan
| | - Filippo Pesapane
- Breast Imaging Division, Radiology Department, European Institute of Oncology (IEO), IRCCS, Milan
| | - Elisa Vicini
- Division of Breast Surgery, European Institute of Oncology (IEO), IRCCS
| | - Francesca Magnoni
- Division of Breast Surgery, European Institute of Oncology (IEO), IRCCS
| | - Andrea Sibilio
- Division of Breast Surgery Forlì (Ravenna), AUSL Romagna, Ravenna
| | - Cristina Zanzottera
- Division of Cancer Prevention and Genetics, European Institute of Oncology (IEO), IRCCS, Milan
| | | | - Sara Mannucci
- Division of Cancer Prevention and Genetics, European Institute of Oncology (IEO), IRCCS, Milan
| | - Monica Marabelli
- Division of Cancer Prevention and Genetics, European Institute of Oncology (IEO), IRCCS, Milan
| | - Mariarosaria Calvello
- Division of Cancer Prevention and Genetics, European Institute of Oncology (IEO), IRCCS, Milan
- Division of Hematology, Clinica Moncucco, Lugano, Switzerland
| | - Irene Feroce
- Division of Cancer Prevention and Genetics, European Institute of Oncology (IEO), IRCCS, Milan
| | - Paola Zagami
- Division of New Drugs and Early Drug Development for Innovative Therapies, European Institute of Oncology (IEO), IRCCS
- Department of Biomedical, Surgical and Dental Sciences
| | | | - Antonio Toesca
- Candiolo Cancer Institute, FPO - IRCCS, Candiolo (TO), Italy
| | - Paolo Tarantino
- Division of New Drugs and Early Drug Development for Innovative Therapies, European Institute of Oncology (IEO), IRCCS
- Division of Breast Oncology, Dana-Farber Cancer Institute, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Eleonora Nicolò
- Division of New Drugs and Early Drug Development for Innovative Therapies, European Institute of Oncology (IEO), IRCCS
| | - Giovanni Mazzarol
- Division of Pathology, European Institute of Oncology (IEO), IRCCS, Milan, Italy
| | - Carlo La Vecchia
- Department of Clinical Sciences and Community Health, University of Milan, Milan, and
| | - Bernardo Bonanni
- Division of Cancer Prevention and Genetics, European Institute of Oncology (IEO), IRCCS, Milan
| | | | - Paolo Veronesi
- Division of Breast Surgery, European Institute of Oncology (IEO), IRCCS
- Department of Oncology and Hemato-Oncology, University of Milan
| | - Nicola Fusco
- Department of Oncology and Hemato-Oncology, University of Milan
- Harvard Medical School, Boston, MA, USA
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Corso G, D'Ecclesiis O, Magnoni F, Mazzotta E, Conforti F, Veronesi P, Sajjadi E, Venetis K, Fusco N, Gandini S. Metaplastic breast cancers and triple-negative breast cancers of no special type: are they prognostically different? A systematic review and meta-analysis. Eur J Cancer Prev 2022; 31:459-466. [PMID: 35088973 DOI: 10.1097/cej.0000000000000733] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND AND AIMS Metaplastic breast cancer (MBC) and triple-negative (TN) BC of no special type are often confounded with each other in terms of survival and prognosis. In this systematic study and meta-analysis, we evaluated the prognosis of each of these two different diagnoses. METHODS We conducted a systematic literature search and review using the MOOSE guidelines, through PUBMED database, the Ovid MEDLINE database, and the ISI Web of Science Citation Index Expanded (SCI Expanded). Overall survival (OS) and disease-free survival (DFS) were the main outcomes considered. RESULTS Our review eventually selected six independent studies, with a total of more than 59 519 patients. MBC was found to associate with worse OS compared to TNBC of no special type, with a significant 40% increased risk of death [summary hazard ratio (SHR) = 1.40, 95% confidence interval (CI): 1.30-1.50]. We found neither heterogeneity ( I2 = 0%) nor evidence of publication bias ( P = 0.82 and P = 0.49 by Begg's and Egger's test, respectively) between studies. No statistically significant difference was found between MBC and TNBC of no special type in terms of DFS (SHR = 1.17, 95% CI: 0.80-1.71). CONCLUSION This study demonstrates that TNBC of no special type and MBC have comparable DFS, although the latter presents a significantly worse prognosis in terms of OS. Despite DFS being similar in both subtypes, this did not result in significant OS benefits, with MBC score being the worse of the two diseases.
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Affiliation(s)
- Giovanni Corso
- Division of Breast Surgery, European Institute of Oncology (IEO), IRCCS, Milan
- Department of Oncology and Hemato-Oncology, University of Milan, Milan
| | - Oriana D'Ecclesiis
- Division of Experimental Oncology, European Institute of Oncology (IEO), IRCCS, Milan
| | - Francesca Magnoni
- Division of Breast Surgery, European Institute of Oncology (IEO), IRCCS, Milan
| | - Erica Mazzotta
- Division of Breast Surgery, European Institute of Oncology (IEO), IRCCS, Milan
| | - Fabio Conforti
- Division of Medical Oncology for Melanoma, Sarcoma, and Rare Tumors, European Institute of Oncology (IEO), IRCCS, Milan
| | - Paolo Veronesi
- Division of Breast Surgery, European Institute of Oncology (IEO), IRCCS, Milan
- Department of Oncology and Hemato-Oncology, University of Milan, Milan
| | - Elham Sajjadi
- Department of Oncology and Hemato-Oncology, University of Milan, Milan
- Biobank for Translational Medicine (B4MED) Unit, Division of Pathology, European Institute of Oncology (IEO), IRCCS, Milan, Italy
| | - Konstantinos Venetis
- Department of Oncology and Hemato-Oncology, University of Milan, Milan
- Biobank for Translational Medicine (B4MED) Unit, Division of Pathology, European Institute of Oncology (IEO), IRCCS, Milan, Italy
| | - Nicola Fusco
- Department of Oncology and Hemato-Oncology, University of Milan, Milan
- Biobank for Translational Medicine (B4MED) Unit, Division of Pathology, European Institute of Oncology (IEO), IRCCS, Milan, Italy
| | - Sara Gandini
- Division of Experimental Oncology, European Institute of Oncology (IEO), IRCCS, Milan
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