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Genre L, Roché H, Varela L, Kanoun D, Ouali M, Filleron T, Dalenc F. External validation of a published nomogram for prediction of brain metastasis in patients with extra-cerebral metastatic breast cancer and risk regression analysis. Eur J Cancer 2016; 72:200-209. [PMID: 28042991 DOI: 10.1016/j.ejca.2016.10.019] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Revised: 10/04/2016] [Accepted: 10/21/2016] [Indexed: 12/22/2022]
Abstract
BACKGROUND Survival of patients with metastatic breast cancer (MBC) suffering from brain metastasis (BM) is limited and this event is usually fatal. In 2010, the Graesslin's nomogram was published in order to predict subsequent BM in patients with breast cancer (BC) with extra-cerebral metastatic disease. This model aims to select a patient population at high risk for BM and thus will facilitate the design of prevention strategies and/or the impact of early treatment of BM in prospective clinical studies. PATIENTS AND METHODS Nomogram external validation was retrospectively applied to patients with BC and later BM between January 2005 and December 2012, treated in our institution. Moreover, risk factors of BM appearance were studied by Fine and Gray's competing risk analysis. RESULTS Among 492 patients with MBC, 116 developed subsequent BM. Seventy of them were included for the nomogram validation. The discrimination is good (area under curve = 0.695 [95% confidence interval, 0.61-0.77]). Risk factors of BM appearance are: human epidermal growth factor receptor 2 (HER2) overexpression/amplification, triple-negative BC and number of extra-cerebral metastatic sites (>1). With a competing risk model, we highlight the nomogram interest for HER2+ tumour subgroup exclusively. CONCLUSION Graesslin's nomogram external validation demonstrates exportability and reproducibility. Importantly, the competing risk model analysis provides additional information for the design of prospective trials concerning the early diagnosis of BM and/or preventive treatment on high risk patients with extra-cerebral metastatic BC.
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Affiliation(s)
- Ludivine Genre
- Department of Gynecologic Surgery, IUCT-O, Toulouse, France
| | - Henri Roché
- Department of Medical Oncology, Institut Claudius Regaud, IUCT-O, Toulouse, France
| | - Léonel Varela
- Department of Radiotherapy, Institut Claudius Regaud, IUCT-O, Toulouse, France
| | - Dorra Kanoun
- Department of Medical Oncology, Institut Claudius Regaud, IUCT-O, Toulouse, France
| | - Monia Ouali
- Department of Biostatistics, Institut Claudius Regaud, IUCT-O, Toulouse, France
| | - Thomas Filleron
- Department of Biostatistics, Institut Claudius Regaud, IUCT-O, Toulouse, France
| | - Florence Dalenc
- Department of Medical Oncology, Institut Claudius Regaud, IUCT-O, Toulouse, France.
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Santini AC, Giovane G, Auletta A, Di Carlo A, Fiorelli A, Cito L, Astarita C, Giordano A, Alfano R, Feola A, Di Domenico M. Translational Research and Plasma Proteomic in Cancer. J Cell Biochem 2015; 117:828-35. [PMID: 26479787 DOI: 10.1002/jcb.25413] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Accepted: 10/16/2015] [Indexed: 12/14/2022]
Abstract
Proteomics is a recent field of research in molecular biology that can help in the fight against cancer through the search for biomarkers that can detect this disease in the early stages of its development. Proteomic is a speedily growing technology, also thanks to the development of even more sensitive and fast mass spectrometry analysis. Although this technique is the most widespread for the discovery of new cancer biomarkers, it still suffers of a poor sensitivity and insufficient reproducibility, essentially due to the tumor heterogeneity. Common technical shortcomings include limitations in the sensitivity of detecting low abundant biomarkers and possible systematic biases in the observed data. Current research attempts are trying to develop high-resolution proteomic instrumentation for high-throughput monitoring of protein changes that occur in cancer. In this review, we describe the basic features of the proteomic tools which have proven to be useful in cancer research, showing their advantages and disadvantages. The application of these proteomic tools could provide early biomarkers detection in various cancer types and could improve the understanding the mechanisms of tumor growth and dissemination.
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Affiliation(s)
- Annamaria Chiara Santini
- Department of Morphopathology, Thoracic Surgery Unit, Second University of Naples, Naples, Italy
| | - Giancarlo Giovane
- Department of Experimental Medicine, Section of Hygiene, Occupational Medicine and Forensic Medicine, Second University of Naples, Naples, Italy
| | - Adelaide Auletta
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy
| | - Angelina Di Carlo
- Department of Medico-Surgical Sciences and Biotechnologies, "Sapienza" University of Rome, Rome, Italy
| | - Alfonso Fiorelli
- Department of Morphopathology, Thoracic Surgery Unit, Second University of Naples, Naples, Italy
| | - Letizia Cito
- Oncology Research Center of Mercogliano (CROM), Istituto Nazionale Tumori "Fodazione G. Pascale" - IRCCS, Naples, Italy
| | - Carlo Astarita
- Sbarro Institute for Cancer Research and Molecular Medicine, Center for Biotechnology, Temple University, Philadelphia, Pennsylvania
| | - Antonio Giordano
- Sbarro Institute for Cancer Research and Molecular Medicine, Center for Biotechnology, Temple University, Philadelphia, Pennsylvania.,Department of Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy
| | - Roberto Alfano
- Department of Anesthesiological, Surgical and Emergency Sciences. Second University of Naples, Naples, Italy
| | - Antonia Feola
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy.,Department of Biology, University of Naples "Federico II", Naples, Italy
| | - Marina Di Domenico
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy.,Sbarro Institute for Cancer Research and Molecular Medicine, Center for Biotechnology, Temple University, Philadelphia, Pennsylvania
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