For the first time, we report the distribution of molecular breast cancer subtypes and their associations with some clinicopathological characteristics in a large cohort of Algerian women. In our current study, the median age of diagnosis for all breast cancer subtypes was younger than the average age in Europe and America. Luminal A was the most common sub- type in our patients followed by TNBC. The proportion of luminal A subtype was lesser than reported in white women with breast cancer in Europe and America. The proportion of TNBC subtype in Algerian women was higher compared with Caucasian women of European ancestry. This study will contribute in developing optimal clinical trial protocols and personalized management strategies for Algerian breast cancer patients.

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