title: Reasons for breast cancer heterogeneity.
abstract: Breast cancers differ in many ways, such as in their cell of origin, the molecular alterations causing them and the susceptibility and defenses of the patient, and this makes it difficult to give the most appropriate treatment. Two recent papers have contributed to the establishment of a more precise molecular classification of breast tumors.
authors.affiliation: Centre de Recherche en Cancérologie de Marseille, Laboratoire d'Oncologie Moléculaire, UMR891 Inserm, Institut Paoli-Calmettes, Université de la Méditerranée, 13009 Marseille, France.
authors.forename: François
authors.initials: F
authors.lastname: Bertucci
authors.forename: Daniel
authors.initials: D
authors.lastname: Birnbaum
mesh_terms: D000818:Animals; D001943:Breast Neoplasms / Q000235:genetics* / Q000473:pathology / Q000628:therapy; D005260:Female; D015972:Gene Expression Regulation, Neoplastic / Q000235:genetics / Q000502:physiology; D018740:Genetic Heterogeneity; D006801:Humans; D035683:MicroRNAs / Q000096:biosynthesis / Q000235:genetics
chemical_list: D035683:MicroRNAs