OBJECTIVE: Few studies have been conducted on breast cancer in Sub-Saharan Africa and their results have been suspected to be impaired by artefacts. This prospective study was designed to determine tumor and patient characteristics in Mali with control of each methodological step. These data are necessary to define breast cancer treatment guidelines in this country. METHODS: Clinical and tumor characteristics and known risk factors were obtained in a consecutive series of 114 patients. Each technical step for the determination of tumor characteristics [histology, TNM, grade, estrogen (ER) and progesterone receptors (PR), HER2, and Ki67] was controlled. RESULTS: Patients had a mean age of 46 years. Most tumors were invasive ductal carcinomas (94%), T3-T4 (90%) with positive nodes (91%), grade III (78%), and ER (61%) and PR (72%) negative. HER2 was overexpressed in 18% of cases. The triple-negative subgroup represented 46%, displaying a particularly aggressive pattern (90% grade III; 88% Ki67 >20%). CONCLUSION: This study demonstrates the high incidence of aggressive triple-negative tumors in Mali. Apart from a higher prevalence of premenopausal women, no significant difference in risk factors was observed between triple-negative tumors and other tumors. The hormonal therapy systematically prescribed therefore needs to be revised in light of this study.
OBJECTIVE: Few studies have been conducted on breast cancer in Sub-Saharan Africa and their results have been suspected to be impaired by artefacts. This prospective study was designed to determine tumor and patient characteristics in Mali with control of each methodological step. These data are necessary to define breast cancer treatment guidelines in this country. METHODS: Clinical and tumor characteristics and known risk factors were obtained in a consecutive series of 114 patients. Each technical step for the determination of tumor characteristics [histology, TNM, grade, estrogen (ER) and progesterone receptors (PR), HER2, and Ki67] was controlled. RESULTS:Patients had a mean age of 46 years. Most tumors were invasive ductal carcinomas (94%), T3-T4 (90%) with positive nodes (91%), grade III (78%), and ER (61%) and PR (72%) negative. HER2 was overexpressed in 18% of cases. The triple-negative subgroup represented 46%, displaying a particularly aggressive pattern (90% grade III; 88% Ki67 >20%). CONCLUSION: This study demonstrates the high incidence of aggressive triple-negative tumors in Mali. Apart from a higher prevalence of premenopausal women, no significant difference in risk factors was observed between triple-negative tumors and other tumors. The hormonal therapy systematically prescribed therefore needs to be revised in light of this study.
Authors: Louise A Brinton; Jonine D Figueroa; Baffour Awuah; Joel Yarney; Seth Wiafe; Shannon N Wood; Daniel Ansong; Kofi Nyarko; Beatrice Wiafe-Addai; Joe Nat Clegg-Lamptey Journal: Breast Cancer Res Treat Date: 2014-03-07 Impact factor: 4.872
Authors: Lisa A Newman; Azadeh Stark; Dhanajay Chitale; Margaret Pepe; Gary Longton; Maria J Worsham; S David Nathanson; Patricia Miller; Jessica M Bensenhaver; Erica Proctor; Monique Swain; Christos Patriotis; Paul F Engstrom Journal: JAMA Oncol Date: 2017-08-01 Impact factor: 31.777
Authors: Eva Johanna Kantelhardt; Assefa Mathewos; Abreha Aynalem; Tigeneh Wondemagegnehu; Ahmedin Jemal; Martina Vetter; Erdme Knauf; Anne Reeler; Solomon Bogale; Christoph Thomssen; Andreas Stang; Tufa Gemechu; Pietro Trocchi; Bekuretsion Yonas Journal: BMC Cancer Date: 2014-11-29 Impact factor: 4.430