PGR and breast cancer: Similarly, the prevalence of a subtype of BC disease, Triple-Negative BC among black women which is characterised by the lack of three major receptors: Estrogen recepto, progesterone receptor and human epidermal growth factor receptors 2 which are usually found in other types of BC, which does not respond to the use of hormonal treatments or specific medicines targeted at these receptors according to experts is found in 1 in 5 of them [6].