Furthermore, data from the international CONCORD-2 study published in 2015 and performed in various regions of the world from 1990 to 2015, showed that the largest increase in mortality from breast cancer was observed in the Caribbean [5–8].The indicators provided by cancer surveillance data underscore the need for reliable data about breast cancer survival in Martinique, taking account of stage at diagnosis, but also specific data regarding hormone receptor status, in view of the disparities in survival observed across the Caribbean and around the world [5–8]. This evidence concerns the gene NR4A1 and breast cancer.