title: Comprehensive prognostic analysis in breast cancer integrating clinical, tumoral, micro-environmental and immunohistochemical criteria.
abstract: Significant morphological, clinical and biological prognostic factors vary according to molecular subtypes of breast tumors, yet comprehensive analysis of such factors linked to survival in each group is lacking. Clinicopathological and micro-environmental criteria, estrogen (ER), progesterone (PR) receptors, HER2, Ki67, basal markers, CD24, CD44, ALDH1, BCL2, E-Cadherin and Trio were assessed in 1070 primary operable breast cancers from a single center according to five main molecular subtypes and associations with distant metastasis-free survival (DMFS) were examined. There were 682 (64 %) luminal A (LA), 166 (16 %) Luminal B HER2 negative (LBH-), 47 (4 %) Luminal B HER2 positive (LBH+), 108 (10 %) triple negative (TN) and 67 (6 %) HER2-enriched tumors (H2+). Median follow-up was 13.7 years. At 5 years, DMFS in LA (90 %) was better than in LBH- (80.9 %), hazard ratio (HR) = 2.22 [1.44-3.43] P < 0.001; LBH+ (74.5 %), HR = 3.14 [1.69-5.84] P < 0.001, TN (71.5 %) HR = 3.63 [2.34-5.63], P < 0.001; and H2+ (65.2 %), HR = 4.69 [2.90-7.59], P < 0.001. In multivariable analysis, factors associated with shorter DMFS varied according to molecular subtype, with tumor size being associated with shorter DMFS in the LBH-, LBH+ and TN groups and the Rho GEF Trio and BCL2 phenotypes in TN tumors only. These findings help to define new clinicophenotypic models and to identify new therapeutic strategies in the specific molecular subgroups.
authors.affiliation: Department of BioPathology, Institut Bergonié, 229, cours de l'Argonne, 33076 Bordeaux, France.
authors.forename: Isabelle
authors.initials: I
authors.lastname: de Mascarel
authors.affiliation: Department of Medical Oncology, Institut Bergonié, 229 cours de l'Argonne, 33076 Bordeaux, France.
authors.forename: Marc
authors.initials: M
authors.lastname: Debled
authors.affiliation: Clinical and Epidemiological Research Unit, Institut Bergonié, 229 cours de l'Argonne, 33076 Bordeaux, France.
authors.forename: Véronique
authors.initials: V
authors.lastname: Brouste
authors.affiliation: Department of Medical Oncology, Institut Bergonié, 229 cours de l'Argonne, 33076 Bordeaux, France.
authors.forename: Louis
authors.initials: L
authors.lastname: Mauriac
authors.affiliation: Department of BioPathology, Institut Bergonié, 229, cours de l'Argonne, 33076 Bordeaux, France.
authors.forename: Ghislaine
authors.initials: G
authors.lastname: Sierankowski
authors.affiliation: Department of BioPathology, Institut Bergonié, 229, cours de l'Argonne, 33076 Bordeaux, France.
authors.forename: Valérie
authors.initials: V
authors.lastname: Velasco
authors.affiliation: Department of BioPathology, Institut Bergonié, 229, cours de l'Argonne, 33076 Bordeaux, France ; Institut National de la Santé et de la Recherche Médicale (INSERM) U916, Institut Bergonié, 229 cours de l'Argonne, 33076 Bordeaux, France.
authors.forename: Sabrina
authors.initials: S
authors.lastname: Croce
authors.affiliation: Department of BioPathology, Institut Bergonié, 229, cours de l'Argonne, 33076 Bordeaux, France ; Institut National de la Santé et de la Recherche Médicale (INSERM) U916, Institut Bergonié, 229 cours de l'Argonne, 33076 Bordeaux, France.
authors.forename: Frédéric
authors.initials: F
authors.lastname: Chibon
authors.affiliation: Centre de Recherche en Biochimie Macromoléculaire, CRBM-CNRS UMR 5237, Universités Montpellier I et II, Montpellier, France.
authors.forename: Jêrome
authors.initials: J
authors.lastname: Boudeau
authors.affiliation: Centre de Recherche en Biochimie Macromoléculaire, CRBM-CNRS UMR 5237, Universités Montpellier I et II, Montpellier, France.
authors.forename: Anne
authors.initials: A
authors.lastname: Debant
authors.affiliation: Department of BioPathology, Institut Bergonié, 229, cours de l'Argonne, 33076 Bordeaux, France ; Institut National de la Santé et de la Recherche Médicale (INSERM) U916, Institut Bergonié, 229 cours de l'Argonne, 33076 Bordeaux, France.
authors.forename: Gaëtan
authors.initials: G
authors.lastname: MacGrogan
keywords: BCL2; Bcl2; Breast neoplasms; Claudin-low; Estrogen receptor; Rho GEF Trio