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Retrospective Study
Copyright ©The Author(s) 2025. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Clin Oncol. Nov 24, 2025; 16(11): 110687
Published online Nov 24, 2025. doi: 10.5306/wjco.v16.i11.110687
Clinical outcomes of early-stage breast cancer in Morocco: A cohort of 400 women
Nabil Ismaili, Fadila Guessous, Sanaa El Majjaoui
Nabil Ismaili, Department of Medical Oncology, Mohammed VI Faculty of Medicine, Mohammed VI University of Sciences and Health, Casablanca 20100, Morocco
Nabil Ismaili, Fadila Guessous, Sanaa El Majjaoui, Laboratory of Oncopathology, Biology and Environment of Cancer Laboratory, Mohammed VI Center for Research and Innovation, Rabat 10100, Morocco
Fadila Guessous, Department of Biomedical Sciences, Mohammed VI Faculty of Medicine, Mohammed VI University of Sciences and Health, Casablanca 20100, Morocco
Sanaa El Majjaoui, Department of Radiotherapy, Mohammed VI Faculty of Medicine, Mohammed VI University of Sciences and Health, Casablanca 20100, Morocco
Author contributions: Ismaili N was responsible for the conception and design, data collection and assembly, data analysis, interpretation, manuscript writing, and final approval of the manuscript; Guessous F was responsible for the interpretation, manuscript writing, and final approval of the manuscript; El Majjaoui S was responsible for the data collection and assembly, interpretation, manuscript writing, and final approval of manuscript.
Institutional review board statement: The Institutional Review Board of the Mohammed VI University of Sciences and Health confirms that the present retrospective study, involving human subjects, ensure the protection of participants’ identity and data confidentiality.
Informed consent statement: As the treatment was conducted by the medical staff, depending on the drugs availability in Morocco, oral consent was obtained from the subjects and was approved by the Institutional Review Boards of the National Institute of Oncology Cancer Center in Rabat.
Conflict-of-interest statement: There is no conflict of interest associated with any of the senior author or other coauthors who contributed to this manuscript.
Data sharing statement: The data supporting the study findings is accessible for review at National Institute of Oncology in Rabat.
Open Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: https://creativecommons.org/Licenses/by-nc/4.0/
Corresponding author: Nabil Ismaili, MD, Professor, Department of Medical Oncology, Mohammed VI Faculty of Medicine, Mohammed VI University of Sciences and Health, Boulevard Mohamed Taieb Naciri, Commune Hay Hassani, Casablanca 20100, Morocco. ismailinabil@yahoo.fr
Received: June 17, 2025
Revised: July 8, 2025
Accepted: October 9, 2025
Published online: November 24, 2025
Processing time: 158 Days and 0.2 Hours
Abstract
BACKGROUND

Outcomes of early breast cancer in African women are currently not well defined.

AIM

To analyze survival outcomes and prognostic factors in Moroccan women with operable breast cancer treated with multimodal therapies.

METHODS

We retrospectively analyzed the data of a large cohort of 400 patients diagnosed with nonmetastatic breast cancer who completed surgery, chemotherapy, and radiotherapy at the National Institute of Oncology in Rabat, from January 2001 to December 2003.

RESULTS

The mean age at diagnosis was 45 years (range: 22-91 years). Surgery was performed in all cases: Mastectomy in 86% and breast-conserving surgery in 14%. Most tumors (> 87%) were classified as pathologic T2 stage or higher, and axillary lymph nodes were involved in 75.5% of cases. Ninety-five percent of patients completed six cycles of adjuvant chemotherapy, and all received radiotherapy. At a median follow-up of 74.5 months, the 5-year overall survival (OS) was 82.1% [95% confidence interval (CI): 78.1-86.3], and the 5-year disease-free survival was 78.1% (95%CI: 73.8-82.6). In univariate analysis, negative nodal status [pN- vs pN+, hazard ratio (HR) = 0.34, 95%CI: 0.16-0.75; P = 0.007] and lower American Joint Committee on Cancer (AJCC) stage (I-II vs III, HR = 0.29, 95%CI: 0.16-0.52; P < 0.001) were significantly associated with better OS. In multivariate analysis, AJCC stage I-II vs stage III remained the strongest predictor of improved OS (HR = 0.32, 95%CI: 0.15-0.67; P = 0.002), followed by treatment with anthracyclines vs cyclophosphamide, methotrexate, fluorouracil (CMF; HR = 0.58, 95%CI: 0.35-0.94; P = 0.027).

CONCLUSION

Moroccan women with early breast cancer exhibited more aggressive disease compared to women in high-income countries. AJCC stage III was the strongest predictor of poorer OS, followed by chemotherapy regimen (CMF vs anthracycline). A multimodal treatment approach, including surgery, systemic therapy, and radiotherapy, is essential to improve breast cancer outcomes.

Keywords: Breast cancer; Epidemiology; Africa; Morocco; Outcomes; Prognosis

Core Tip: In this retrospective study, we investigated demographics, tumor characteristics, and outcomes in women with early breast cancer in a cohort of 400 Moroccan women. At a median follow-up of 74.5 months, the 5-year overall survival (OS) was 82.1%, and the 5-year disease-free survival was estimated at 78.1%. In univariate analysis, patients with negative pathologic nodal stage and American Joint Committee on Cancer (AJCC) stage I-II had better OS than those with pN+ and stage III disease, respectively. In multivariate analysis, AJCC stage I-II (vs stage III) showed the strongest association with improved OS, followed by treatment with anthracyclines (vs cyclophosphamide, methotrexate and fluorouracil).