Detection of Circulating Cytokeratin-19 mRNA-Positive Cells in the Blood and the Mitotic Index of the Primary Tumor Have Independent Prognostic Value in Early Breast Cancer
| Autor: | Dimitris Mavroudis, Efstathios N. Stathopoulos, Stella Apostolaki, M. Perraki, Vassilis Georgoulias, Sofia Agelaki, Maria Kafousi, Konstantinos Tryfonidis |
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| Rok vydání: | 2014 |
| Předmět: |
Adult
Oncology Cancer Research medicine.medical_specialty Mitotic index Cell Breast Neoplasms Real-Time Polymerase Chain Reaction Cytokeratin Breast cancer Circulating tumor cell Internal medicine Antineoplastic Combined Chemotherapy Protocols Biomarkers Tumor Mitotic Index medicine Humans RNA Messenger Aged Neoplasm Staging Keratin-19 Messenger RNA Reverse Transcriptase Polymerase Chain Reaction Proportional hazards model business.industry Middle Aged Neoplastic Cells Circulating Prognosis medicine.disease Primary tumor Survival Rate Carcinoma Lobular medicine.anatomical_structure Chemotherapy Adjuvant Female Neoplasm Grading business Follow-Up Studies |
| Zdroj: | Clinical Breast Cancer. 14:442-450 |
| ISSN: | 1526-8209 |
| Popis: | Previous studies showed that molecular detection of CK-19 mRNA in peripheral blood and the mitotic index of primary tumors have prognostic value in early breast cancer. The aim of this study was to assess the association between these variables.The primary tumors of 223 operable breast cancer patients (92 premenopausal and 131 postmenopausal) were evaluated for the MAI classified as either ≤ 5 per 10, 6 to 10 per 10 and10 per 10 or 10 per 10 and ≥ 10 per 10 mitoses per high power field using a standardized protocol previously reported. Peripheral blood was also collected before and after the end of adjuvant chemotherapy for detection of CK-19 mRNA-positive cells using reverse transcription polymerase chain reaction previously described.After a median follow-up of 118 months, 75 patients (33.6%) experienced disease relapse and 56 (25.1%) died of breast cancer. MAI was strongly associated with disease-free survival (DFS) and overall survival (OS) (P .001 for DFS and OS together). Detecting CK-19 mRNA-positive cells in the peripheral blood before but not after adjuvant chemotherapy was associated with marginally worse DFS (P = .055) and OS (P = .059). Cox regression analysis revealed that MAI and CK-19 mRNA-positive cell detection before adjuvant chemotherapy were independent variables associated with decreased DFS (P .001 and P = .038, respectively) and OS (P .001 and P = .029, respectively). There was no significant interaction between MAI and detection of CK-19 mRNA-positive cells.MAI of the primary tumor and detection of CK-19 mRNA-positive cells in the blood before adjuvant chemotherapy in early breast cancer patients are 2 independent prognostic factors associated with clinical outcome. |
| Databáze: | OpenAIRE |
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