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Highlights in the management of breast cancer How to improve the outcome of Triple-Negative Breast Cancer. Claudia Bighin IRCSS – AOU S . Martino – IST Genova. «From benchside to bedside ». Bed-side. Dissecting the Heterogeneity of TNBC. CK5/6, CK17.
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Highlights in the management of breast cancerHow to improve the outcome of Triple-Negative Breast Cancer Claudia Bighin IRCSS – AOU S. Martino – IST Genova
Dissecting the Heterogeneity of TNBC CK5/6, CK17 Metzger-Filho et al, JCO 2012
76% of the TNBC had a BRCA1-like aCGH profile Lips et al, BJC 2013
A-based vs CMF according to molecular subgroup (meta-analysis of 4 phase III trials) 1.06 *Triple negative disease A-based vs CMF HR: 0.77 95% CI 0.54-1.09 P value = 0.13 CMF 1 0.83 0.82 A-based 0.77* 0.67 Di Leo et al, Lancet Oncol 2011
TNBC/Basal-like HER2 + Luminal B Luminal A Hugh J et al. JCO 2009
Future perspective Joensuu et al, AnnOncol 2012
pCR predicts favourable outcome in TNBC The Paradox of higher sensitivity to neoadjuvant chemotherapy in poor prognosis subtype (TNBC) is explained by the high relapse among pts with residual disease Liedtke C, et al. J Clin Oncol 2008
TNBC and pCR von Minckwitz et al, JCO 2012
Ongoingneoadjuvant trial von Minckwitz et al, AnnOncol 2012
Phase II study: FECwPaclitaxel + Bevacizumab Clavarezza et al, The Breast 2013 (in press)
ASCO 2013BreastCancerOral Session • Abstract #1003 • PrECOG0105: Finalefficacyresults from a phase II study of gemcitabine (G) and carboplatin (C) plus iniparib (BSI-201) asneoadjuvanttherapy for triple-negative (TN) and BRCA1/2 mutation-associatedbreastcancer.(Melinda L. Telli) • Abstract #1004 • A randomized phase II trial investigating the addition of carboplatin to neoadjuvant therapy for triple-negative and HER2-positive early breast cancer (GeparSixto).(Gunter Von Minckwitz)
Median survival with distant metastases Luminal A: 2.2 yrs Luminal B: 1.6 yrs Luminal/HER2: 1.3 yrs HER2 enriched: 0.7 yrs Basal-like: 0.5 yrs 3,732 EBC diagnosed between 1986-1992 Basal-like treated with adj CT: 48%
TNBC: Annual Hazard Rate of Distant Recurrence • Peak of recurrence • TN: 1 to 3 years • Non-TN: steady risk over time Dent R, et al. Clin Cancer Res 2007
TNBC: “…Cytotoxic chemotherapy remains the mainstay of treatment in thisgroup…» Cardoso et al, AnnOncol 2012
Newlyapproveddrugs in TNBC 1 Rugo, SABCS 2008 2 O'Shaughnessy, ASCO 2011 3 Twelves, ESMO 2010
BALI-1 Trial Baselga, SABCS 2010
The difference between the arms was not significant (p=0.11) and the ORR in the cetuximab plus cisplatin arm did not exceed 20% (p=0.50; one-sided Z-test with a significance level of alpha/2=0.05), therefore the simultaneous null hypothesis could not be rejected. Baselga, SABCS 2010
ORR < 20% Carey et al, JCO 2012
[TITLE] ORR 30 vs 34% O'Shaughnessy et al, ASCO 2011
[TITLE] O'Shaughnessy et al, ASCO 2011
Iniparib Olaparib Chuang et al, BCRT 2012