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Table 6 Comparison of distribution of Molecular subtypes of Breast Cancer from Selected East African Studies

From: Breast cancer in Ethiopia: evidence for geographic difference in the distribution of molecular subtypes in Africa

Author, year Country Number of breast cancer patients Average age at diagnosis (yrs) % ER− % PR− % HER2− % ER− /PR− /HER2− (triple negative)
This Study, Endale et al. Ethiopia 114 43 35 56 76 23
Jiagge et al., 2016 [22] Ethiopia 94 43 15
Sayed S et al.,2014 [21] Kenya 301 47.5 27.2 35.2 82.4a 20.2
Kantelhardt et al., 2014 [20] Ethiopia 352 35 49
Jemal and Fedewa, 2012 [29] USAb 186 48 22 35
  1. aHER2 equivocal cases are considered as negative
  2. bDone on Eastern Africa-born blacks living in USA (74% were Ethiopians)