J.B.D. was supported by a grant fellowship from the ARC and IRCL charities. The authors thank the UMR 8199 LIGAN‐PM Genomics platform (Lille, France), which belongs to the “Federation de Recherche” 3508 Labex EGID (European Genomics Institute for Diabetes; ANR‐10‐LABX‐46) and was supported by the ANR Equipex 2010 session (ANR‐10‐EQPX‐07‐01; “LIGAN‐PM”). The LIGAN‐PM Genomics platform (Lille, France) is also supported by the FEDER and the Region Hauts de France. This work was supported by the INCa (French Cancer National Institute), Grant number ARC_INCa_LNCC_8068, by Ligue contre le Cancer—Septentrion comittee, by the SIRIC ONCOLille, by “Cancer du sein—Parlons‐en!” charity “Pink Ruban” award, and by GEFLUC charity