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MO24 - NSCLC - Chemotherapy III (ID 110)
- Event: WCLC 2013
- Type: Mini Oral Abstract Session
- Track: Medical Oncology
- Presentations: 1
MO24.06 - Randomized Phase II study of Pemetrexed plus Carboplatin followed by Pemetrexed versus Paclitaxel plus Carboplatin followed by Pemetrexed in Advanced Non-squamous, Non-small Cell Lung Cancer (LOGIK 0904). (ID 2235)
10:30 - 12:00 | Author(s): M. Takeshita
PARAMOUNT study confirmed the improvement of overall survival with continuation maintenance chemotherapy with pemetrexed (PEM) compared with placebo after 4 cycles of cisplatin plus PEM induction chemotherapy recently. JMEN study also showed the usefulness of switch maintenance with PEM after 4 cycles of platinum doublet without PEM. In this study, we conducted the randomized phase II study comparing switch or continuation maintenance chemotherapy with PEM after standard doublet regimen.
Histologically/cytologically confirmed stage IIIb or IV non-squamous NSCLC patients with mesurable disease, ECOG PS 0-1, age over 20 years and adequate organ function were eligible for the study. Randomization was stratified by gender and stage of disease. Patients received 3 cycles of PEM 500mg/m2 plus CB AUC6 (Arm 1) or PAC 200mg/m2 plus CB AUC6 (Arm 2). All patients with non-PD after induction chemotherapy continued PEM 500mg/m2 until PD. Primary endopoint is progression free survival (PFS).
140 pts were enrolled and assigned to Arm1 or Arm2 randomly. The clinical data of 132 pts were used as full analysis set (median age 64.5 yrs (42-83), 85 male, 120 stage IV, 58 PS0, 127 adenocarcinoma, 46 never smoker). 42 pts had prior treatment including 9 sugery, 1 adjuvant chemotherapy, 24 radiotherapy and 8 others. In both arms, 50% of pts entered into the maintenance treatment with PEM after completion of 3 cycles induction chemotherapy. The median PFS was 113 days in Arm 1 and 143 days in Arm 2, respectively. Cox-proportinal Hazard ratio was1.047, and 95% HR confidential interval was 0.707-1.549. Stratified Log-Rank test showed no significant difference in both arms.
There was no significant difference for PFS in Arm 1(PEM plus CB followed by PEM) and Arm 2 (PAC plus CB followed by PEM).
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