PMID- 18829515 OWN - NLM STAT- MEDLINE DCOM- 20081126 LR - 20220416 IS - 1078-0432 (Print) IS - 1078-0432 (Electronic) IS - 1078-0432 (Linking) VI - 14 IP - 19 DP - 2008 Oct 1 TI - Fluorescence in situ hybridization subgroup analysis of TRIBUTE, a phase III trial of erlotinib plus carboplatin and paclitaxel in non-small cell lung cancer. PG - 6317-23 LID - 10.1158/1078-0432.CCR-08-0539 [doi] AB - PURPOSE: TRIBUTE was a phase III trial evaluating the addition of erlotinib to carboplatin and paclitaxel as a first-line treatment for advanced non-small cell lung cancer that did not meet its primary end point of improving overall survival. Here, we assess the value of using epidermal growth factor receptor (EGFR) gene copy number in tumor biopsy samples, as determined by fluorescence in situ hybridization (FISH), as a predictor of treatment outcome. METHODS: EGFR FISH analysis was done using LSI EGFR SpectrumOrange/CEP7 SpectrumGreen probe. RESULTS: Of 275 samples, 245 (89.1%) were successfully analyzed by FISH. One hundred (40.8%) of patients were EGFR FISH(+). Median overall survival was not different between FISH(+) and FISH(-) patients in either the chemotherapy+erlotinib arm or the chemotherapy+placebo arm. In FISH(+) patients, median time to progression (TTP) was 6.3 months in the erlotinib arm versus 5.8 months in the placebo arm (hazard ratio, 0.59; 95% confidence interval, 0.35-0.99; P = 0.0430); in FISH(-) patients, median TTP was 4.6 months versus 6.0 months (hazard ratio, 1.42; 95% confidence interval, 0.95-2.14; P = 0.0895; treatment interaction test, P = 0.007). After 6 months of treatment, a notable separation of the TTP curves in favor of erlotinib emerged. Objective response rates were 11.6% versus 29.8% in FISH(+) patients (chemotherapy+erlotinib arm versus chemotherapy+placebo arm; P = 0.0495) and 21.8% versus 25.4%, respectively, for FISH(-) patients (P = 0.6954). CONCLUSIONS: EGFR gene copy number by FISH did not predict survival benefit. However, among EGFR FISH(+) patients, TTP was longer in patients who received erlotinib and continued to receive it after completing first-line therapy. FAU - Hirsch, Fred R AU - Hirsch FR AD - University of Colorado Cancer Center, Aurora, CO 80045, USA. Fred.Hirsch@UCHSC.edu FAU - Varella-Garcia, Marileila AU - Varella-Garcia M FAU - Dziadziuszko, Rafal AU - Dziadziuszko R FAU - Xiao, Yun AU - Xiao Y FAU - Gajapathy, Sujatha AU - Gajapathy S FAU - Skokan, Margaret AU - Skokan M FAU - Lin, Ming AU - Lin M FAU - O'Neill, Vincent AU - O'Neill V FAU - Bunn, Paul A Jr AU - Bunn PA Jr LA - eng GR - P50 CA058187/CA/NCI NIH HHS/United States GR - P01 CA 58187/CA/NCI NIH HHS/United States PT - Clinical Trial, Phase III PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PL - United States TA - Clin Cancer Res JT - Clinical cancer research : an official journal of the American Association for Cancer Research JID - 9502500 RN - 0 (Quinazolines) RN - BG3F62OND5 (Carboplatin) RN - DA87705X9K (Erlotinib Hydrochloride) RN - EC 2.7.10.1 (ErbB Receptors) RN - P88XT4IS4D (Paclitaxel) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Antineoplastic Combined Chemotherapy Protocols/*therapeutic use MH - Carboplatin/*administration & dosage MH - Carcinoma, Non-Small-Cell Lung/*drug therapy/*genetics MH - ErbB Receptors/*genetics/metabolism MH - Erlotinib Hydrochloride MH - Female MH - Gene Expression Regulation, Neoplastic MH - Humans MH - In Situ Hybridization, Fluorescence/*methods MH - Lung Neoplasms/*drug therapy/*genetics MH - Male MH - Middle Aged MH - Paclitaxel/*administration & dosage MH - Quinazolines/*administration & dosage PMC - PMC3368373 MID - NIHMS375690 EDAT- 2008/10/03 09:00 MHDA- 2008/12/17 09:00 PMCR- 2012/06/06 CRDT- 2008/10/03 09:00 PHST- 2008/10/03 09:00 [pubmed] PHST- 2008/12/17 09:00 [medline] PHST- 2008/10/03 09:00 [entrez] PHST- 2012/06/06 00:00 [pmc-release] AID - 14/19/6317 [pii] AID - 10.1158/1078-0432.CCR-08-0539 [doi] PST - ppublish SO - Clin Cancer Res. 2008 Oct 1;14(19):6317-23. doi: 10.1158/1078-0432.CCR-08-0539.