PMID- 24997137 OWN - NLM STAT- MEDLINE DCOM- 20150511 LR - 20211203 IS - 1872-8332 (Electronic) IS - 0169-5002 (Linking) VI - 85 IP - 3 DP - 2014 Sep TI - Randomized phase II study of carboplatin and etoposide with or without obatoclax mesylate in extensive-stage small cell lung cancer. PG - 420-8 LID - S0169-5002(14)00212-8 [pii] LID - 10.1016/j.lungcan.2014.05.003 [doi] AB - OBJECTIVE: This randomized phase II study assessed the efficacy and safety of obatoclax mesylate, a small-molecule Bcl-2 inhibitor, added to carboplatin/etoposide chemotherapy as initial treatment for extensive-stage small-cell lung cancer (ES-SCLC). MATERIALS AND METHODS: Chemotherapy-naive subjects with ES-SCLC and Eastern Cooperative Oncology Group performance status (ECOG PS) 0-2 received carboplatin/etoposide with (CbEOb) or without (CbE) obatoclax for up to six cycles. Responders to CbEOb could receive maintenance obatoclax until disease progression. The primary endpoint was objective response rate (ORR). RESULTS: 155 subjects (median age 62, 58% male, 10% ECOG PS 2) were treated with CbEOb (n=77) or CbE (n=78); 65% and 59% of subjects, respectively, completed six cycles. ORR was 62% with CbEOb versus 53% with CbE (1-sided p=0.143). Clinical benefit (ORR+ stable disease) trended better with CbEOb (81% versus 68%; p=0.054). Median progression-free survival (PFS) and overall survival (OS) were 5.8 months (95% confidence interval [CI]: 5.3-6.5) and 10.5 months (8.9-13.8) with CbEOb and 5.2 months (95% CI: 4.1-5.7) and 9.8 months (7.2-11.2) with CbE. Median OS was 10.5 months (95% CI: 8.9-13.8) and 9.8 months (7.2-11.2) with a nonsignificant hazard ratio for OS, 0.823; 1-sided p=0.121. Grade 3/4 adverse events (AEs) were primarily hematologic and similar in frequency between treatment arms. Obatoclax-related somnolence and euphoria were grade 1/2, transient, and did not require treatment discontinuation. CONCLUSION: Obatoclax was well tolerated when added to carboplatin/etoposide in first-line treatment of ES-SCLC, but failed to significantly improve ORR, PFS, or OS. CI - Copyright (c) 2014 Elsevier Ireland Ltd. All rights reserved. FAU - Langer, Corey J AU - Langer CJ AD - Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA, United States. Electronic address: corey.langer@uphs.upenn.edu. FAU - Albert, Istvan AU - Albert I AD - Matrai Gyogyintezet, Matrahaza, Hungary. FAU - Ross, Helen J AU - Ross HJ AD - Mayo Clinic, Scottsdale, AZ, United States. FAU - Kovacs, Peter AU - Kovacs P AD - University of Debrecen, Debrecen, Hungary. FAU - Blakely, L Johnetta AU - Blakely LJ AD - The West Clinic, Memphis, TN, United States. FAU - Pajkos, Gabor AU - Pajkos G AD - Bacs-Kiskun County Hospital, Kecskemet, Hungary. FAU - Somfay, Attila AU - Somfay A AD - University of Szeged, Szeged, Hungary. FAU - Zatloukal, Petr AU - Zatloukal P AD - Charles University, Faculty Hospital Bulovka and Postgraduate Medical Institute, Prague, Czech Republic. FAU - Kazarnowicz, Andrzej AU - Kazarnowicz A AD - Tuberculosis and Lung Disease Hospital, Olsztyn, Poland. FAU - Moezi, Mehdi M AU - Moezi MM AD - Cancer Specialists of North Florida, Jacksonville, FL, United States. FAU - Schreeder, Marshall T AU - Schreeder MT AD - Clearview Cancer Institute, Huntsville, AL, United States. FAU - Schnyder, Judy AU - Schnyder J AD - Gemin X Pharmaceuticals, Malvern, PA, United States. FAU - Ao-Baslock, Ada AU - Ao-Baslock A AD - Powered 4 Significance LLC, Bloomsbury, NJ, United States. FAU - Pathak, Ashutosh K AU - Pathak AK AD - Teva Pharmaceuticals, Frazer, PA, United States. FAU - Berger, Mark S AU - Berger MS AD - Gemin X Pharmaceuticals, Malvern, PA, United States. CN - GEM017 Investigators LA - eng SI - ClinicalTrials.gov/NCT00682981 PT - Clinical Trial, Phase II PT - Journal Article PT - Multicenter Study PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20140513 PL - Ireland TA - Lung Cancer JT - Lung cancer (Amsterdam, Netherlands) JID - 8800805 RN - 0 (Indoles) RN - 0 (Pyrroles) RN - 6PLQ3CP4P3 (Etoposide) RN - BG3F62OND5 (Carboplatin) RN - QN4128B52A (obatoclax) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Antineoplastic Combined Chemotherapy Protocols/adverse effects/*therapeutic use MH - Carboplatin/administration & dosage MH - Comorbidity MH - Etoposide/administration & dosage MH - Female MH - Humans MH - Indoles MH - Lung Neoplasms/*drug therapy/mortality/*pathology MH - Male MH - Middle Aged MH - Neoplasm Metastasis MH - Neoplasm Staging MH - Pyrroles/administration & dosage MH - Small Cell Lung Carcinoma/*drug therapy/mortality/*pathology MH - Treatment Outcome OTO - NOTNLM OT - Bcl-2 OT - Carboplatin OT - Etoposide OT - Obatoclax OT - Randomized OT - SCLC EDAT- 2014/07/06 06:00 MHDA- 2015/05/12 06:00 CRDT- 2014/07/06 06:00 PHST- 2014/02/14 00:00 [received] PHST- 2014/04/30 00:00 [revised] PHST- 2014/05/06 00:00 [accepted] PHST- 2014/07/06 06:00 [entrez] PHST- 2014/07/06 06:00 [pubmed] PHST- 2015/05/12 06:00 [medline] AID - S0169-5002(14)00212-8 [pii] AID - 10.1016/j.lungcan.2014.05.003 [doi] PST - ppublish SO - Lung Cancer. 2014 Sep;85(3):420-8. doi: 10.1016/j.lungcan.2014.05.003. Epub 2014 May 13.