This includes six additional case control studies (Al Hamad [8], Periiera [9], Loutfy [10], Wang [11], Khalid [12], Gupta [13]), the identification of MMTV in the dental calculi of 4500-year-old women of the copper age (Lessi [14]), and the identification of MMTV gene sequences in the genome of women with breast cancer, but not in women with BRCA1 and 2 breast cancer [15]. This evidence concerns the gene BRCA1 and breast cancer.