PMID- 23673443 OWN - NLM STAT- MEDLINE DCOM- 20130827 LR - 20220318 IS - 1432-0843 (Electronic) IS - 0344-5704 (Linking) VI - 72 IP - 1 DP - 2013 Jul TI - HER2/CEP17 ratio and HER2 immunohistochemistry predict clinical outcome after first-line trastuzumab plus taxane chemotherapy in patients with HER2 fluorescence in situ hybridization-positive metastatic breast cancer. PG - 109-15 LID - 10.1007/s00280-013-2174-1 [doi] AB - PURPOSE: This study aimed to elucidate the clinical implication of human epidermal growth factor receptor 2/centromeric probe for chromosome 17 (HER2/CEP17) ratio and HER2 immunohistochemistry (IHC) results in patients with HER2 fluorescence in situ hybridization (FISH)-positive metastatic breast cancer (MBC) who received first-line trastuzumab plus taxane chemotherapy. METHODS: Using clinical data of patients with HER2 FISH-positive MBC who received first-line trastuzumab plus taxane chemotherapy, we analyzed the clinical outcome according to the HER2/CEP17 ratio and HER2 IHC analysis. RESULTS: Fifty-two women were analyzed. The median age was 50 years (range 27-69 years). Patients with a HER2/CEP17 ratio >/=3.0 had significantly longer progression-free survival (PFS) (17.2 vs. 7.4 months; p = 0.002) with a tendency toward higher response rate (RR) (p = 0.325) and longer overall survival (OS) (p = 0.129). Patients with HER2 IHC 1+ had significantly shorter OS (14.0 vs. 42.4 months; p = 0.013) along with a tendency toward lower RR (p = 0.068) and shorter PFS (p = 0.220). In the multivariate analysis, HER2/CEP17 ratio <3.0 (p = 0.004) and Eastern Cooperative Oncology Group (ECOG) PS 2 (p = 0.015) were significant factors for shorter PFS, and HER2 IHC 1+ (p = 0.015) and ECOG PS 2 (p = 0.036) were significant factors for poor OS. CONCLUSIONS: Our data support that HER2/CEP17 ratios and HER2 IHC scores may predict clinical outcome after first-line trastuzumab plus taxane chemotherapy in patients with HER2 FISH-positive MBC. FAU - Kim, Ji-Won AU - Kim JW AD - Department of Internal Medicine, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, Korea. FAU - Kim, Jee Hyun AU - Kim JH FAU - Im, Seock-Ah AU - Im SA FAU - Kim, Yu Jung AU - Kim YJ FAU - Han, Hye-Suk AU - Han HS FAU - Kim, Jin-Soo AU - Kim JS FAU - Lee, Kyung-Hun AU - Lee KH FAU - Kim, Tae-Yong AU - Kim TY FAU - Han, Sae-Won AU - Han SW FAU - Jeon, Yoon Kyung AU - Jeon YK FAU - Oh, Do-Youn AU - Oh DY FAU - Kim, Tae-You AU - Kim TY FAU - Park, In Ae AU - Park IA LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130515 PL - Germany TA - Cancer Chemother Pharmacol JT - Cancer chemotherapy and pharmacology JID - 7806519 RN - 0 (Antibodies, Monoclonal, Humanized) RN - 0 (Antineoplastic Agents) RN - 0 (Biomarkers, Tumor) RN - 0 (Bridged-Ring Compounds) RN - 0 (Neoplasm Proteins) RN - 0 (Taxoids) RN - 1605-68-1 (taxane) RN - EC 2.7.10.1 (ERBB2 protein, human) RN - EC 2.7.10.1 (Receptor, ErbB-2) RN - P188ANX8CK (Trastuzumab) SB - IM MH - Adult MH - Aged MH - Algorithms MH - Antibodies, Monoclonal, Humanized/administration & dosage/*therapeutic use MH - Antineoplastic Agents/administration & dosage/therapeutic use MH - *Antineoplastic Combined Chemotherapy Protocols/administration & dosage MH - Biomarkers, Tumor/metabolism MH - Bone Neoplasms/diagnosis/drug therapy/secondary MH - Breast Neoplasms/diagnosis/*drug therapy/metabolism/pathology MH - Bridged-Ring Compounds/administration & dosage/*therapeutic use MH - Female MH - Follow-Up Studies MH - Humans MH - Lung Neoplasms/diagnosis/drug therapy/secondary MH - Lymphatic Metastasis/diagnosis MH - Mammary Glands, Human/*drug effects/metabolism/pathology MH - Middle Aged MH - Neoplasm Proteins/*metabolism MH - Prognosis MH - Receptor, ErbB-2/*metabolism MH - Retrospective Studies MH - Survival Analysis MH - Taxoids/administration & dosage/*therapeutic use MH - Trastuzumab EDAT- 2013/05/16 06:00 MHDA- 2013/08/28 06:00 CRDT- 2013/05/16 06:00 PHST- 2012/11/26 00:00 [received] PHST- 2013/04/19 00:00 [accepted] PHST- 2013/05/16 06:00 [entrez] PHST- 2013/05/16 06:00 [pubmed] PHST- 2013/08/28 06:00 [medline] AID - 10.1007/s00280-013-2174-1 [doi] PST - ppublish SO - Cancer Chemother Pharmacol. 2013 Jul;72(1):109-15. doi: 10.1007/s00280-013-2174-1. Epub 2013 May 15.