PMID- 16601438 OWN - NLM STAT- MEDLINE DCOM- 20060418 LR - 20151119 IS - 1537-453X (Electronic) IS - 0277-3732 (Linking) VI - 29 IP - 2 DP - 2006 Apr TI - Evaluation of HER-2/neu amplification and other biological markers as predictors of response to neoadjuvant anthracycline-based chemotherapy in primary breast cancer: the role of anthracycline dose intensity. PG - 171-7 AB - OBJECTIVES: The value of HER-2/neu status as a predictor of response to anthracycline-based chemotherapy is still a matter of debate. We evaluated the contribution of HER-2/neu gene amplification and other biologic markers in predicting response to different doses of neoadjuvant anthracycline-based chemotherapy. METHODS: Clinical and pathologic records of 115 primary breast cancer patients were reviewed. Forty-eight and 67 patients received high (doxorubicin > or =20 mg/m2/wk; epirubicin > or =30 mg/m2/wk) and moderate-low anthracycline dose intensity regimens, respectively. Pathologic diagnosis, hormonal receptor status (HR), Ki67, and HER-2/neu status were assessed on tumor samples before neoadjuvant chemotherapy. HER-2/neu was determined by fluorescence in situ hybridization (FISH). RESULTS: HER-2/neu amplification was observed in 29/115 (25%) tumors, 18 from moderate-low-dose and 11 from high-dose group. In the univariate analysis, a high Ki67 index (> or =20%) and positive clinical axillary nodes were predictive of an objective tumor response (P = 0.033 and 0.001, respectively). In the multivariate analysis, Ki67 was the only factor predictive of response (OR = 3.08, 95% CI = 1.1-8.5, P = 0.03). HER-2/neu status was not a factor in predicting objective response to different anthracycline dose intensities. The same finding was observed with regards to HR and Ki67. CONCLUSIONS: In our series, no significant dose-response relationship was found according to HER-2/neu status. FAU - Bozzetti, Cecilia AU - Bozzetti C AD - Deparment of Medical Oncology, University Hospital, Parma, Italy. cbozzetti@ao.pr.it FAU - Musolino, Antonino AU - Musolino A FAU - Camisa, Roberta AU - Camisa R FAU - Bisagni, Giancarlo AU - Bisagni G FAU - Flora, Marcella AU - Flora M FAU - Bassano, Cristina AU - Bassano C FAU - Martella, Eugenia AU - Martella E FAU - Lagrasta, Costanza AU - Lagrasta C FAU - Nizzoli, Rita AU - Nizzoli R FAU - Personeni, Nicola AU - Personeni N FAU - Leonardi, Francesco AU - Leonardi F FAU - Cocconi, Giorgio AU - Cocconi G FAU - Ardizzoni, Andrea AU - Ardizzoni A LA - eng PT - Journal Article PL - United States TA - Am J Clin Oncol JT - American journal of clinical oncology JID - 8207754 RN - 0 (Anthracyclines) RN - 0 (Biomarkers, Tumor) RN - 0 (Ki-67 Antigen) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Anthracyclines/*therapeutic use MH - Antineoplastic Combined Chemotherapy Protocols/*therapeutic use MH - Biomarkers, Tumor/*analysis MH - Breast Neoplasms/*drug therapy/*genetics/surgery MH - Dose-Response Relationship, Drug MH - Female MH - *Gene Amplification MH - *Genes, erbB-2 MH - Humans MH - Ki-67 Antigen MH - Middle Aged MH - Multivariate Analysis MH - Neoadjuvant Therapy MH - Predictive Value of Tests MH - Prognosis MH - Retrospective Studies MH - Treatment Outcome EDAT- 2006/04/08 09:00 MHDA- 2006/04/19 09:00 CRDT- 2006/04/08 09:00 PHST- 2006/04/08 09:00 [pubmed] PHST- 2006/04/19 09:00 [medline] PHST- 2006/04/08 09:00 [entrez] AID - 00000421-200604000-00014 [pii] AID - 10.1097/01.coc.0000204405.96572.f9 [doi] PST - ppublish SO - Am J Clin Oncol. 2006 Apr;29(2):171-7. doi: 10.1097/01.coc.0000204405.96572.f9.