Start Your Search
MO25 - NSCLC - Combined Modality Therapy II (ID 112)
- Event: WCLC 2013
- Type: Mini Oral Abstract Session
- Track: Mesothelioma
- Presentations: 1
- Moderators:T. Le Chevalier, K. Pittman
- Coordinates: 10/30/2013, 10:30 - 12:00, Parkside Ballroom B, Level 1
MO25.03 - Safety data from a Phase II study of pemetrexed (PEM) and cisplatin (CIS) with concurrent thoracic radiation after PEM+CIS induction in patients with unresectable locally advanced (LA) Non Squamous Non-Small Cell Lung Cancer (NS-NSCLC) (ID 226)
10:30 - 12:00 | Author(s): N. Chouaki
This single-arm multicenter Phase II study investigated the efficacy and safety of PEM+CIS induction chemotherapy (CT) followed by full-dose PEM+CIS with concurrent radiotherapy (RT) in patients with LA NS-NSCLC. The 1-year progression-free survival (PFS) rate (primary endpoint) was 51.3% (ESMO 2013). Here, we report the safety data for induction CT and concurrent CT+RT.
Patients with unresectable Stage IIIA/IIIB NS-NSCLC (AJCC Version 6), ECOG-PS 0-1 and forced expiratory volume (FEV) >50% of predicted normal FEV received 2 cycles of PEM 500mg/m + CIS 75mg/m on Day 1, every 21 days. Patients who did not progress, with no residual neurological toxicity >Grade (G)2, ECOG-PS 0-1 and lung V20<35% were candidates to receive 2 cycles of the same full-dose PEM+CIS regimen with concurrent thoracic RT of 2Gy/fraction, 5d/week for 7wks (66Gy total). All patients received vitamin supplementation/dexamethasone prophylaxis as per PEM-label.
90 patients were enrolled in 4 European countries, 75 (83.3%) completed induction CT and started concurrent CT+RT. Characteristics of 90/75 patients starting induction/concurrent therapy: median age 61/62yrs, male 57%/53%, ECOG-PS 0 66%/65%, mean(SD) FEV 2.3(0.62)/2.3(0.59)L, adenocarcinoma 90%/92%, Stage IIIA 36%/37%. 63 of 75 patients starting concurrent CT+RT (84.0%) received all 4 CT cycles and full dose RT. Median PEM+CIS dose intensities were 90-92% during induction and >97% during concurrent CT+RT, median RT dose was 66Gy (only 6 patients <60Gy). One patient died from study-drug-related toxicity (enteritis) during Cycle 4. Four patients discontinued due to non-fatal drug- or radiation-related adverse events (AEs), 1 on induction CT (renal failure), 3 on concurrent CT+RT (hypoacusis, 2 patients with radiation esophagitis). During induction/concurrent therapy, 8 of 90 patients (8.9%)/12 of 75 patients (16.0%) had ≥1 CT dose delay due to AEs, mainly neutropenia (n=5/6). 2/6 patients (2.2%/8.0%) required CT dose reductions. 13 of 75 patients (17.3%) experienced AEs requiring interruption of radiation, mainly radiation esophagitis (9.3%). Common G1-4 toxicities are presented in the table. 41.3% of patients reported ≥1 G3/4 toxicity during concurrent CT+RT, mainly esophagitis (12.0%), neutropenia (10.7%) and leukopenia (9.3%). G3 mucositis, G3 dysphagia and G3 acute pneumonitis were each reported by 1 patient (1.3%); 6 patients (8.0%) required blood-cell transfusions. Figure 1
PEM+CIS induction CT followed by full-dose PEM+CIS with concurrent thoracic RT was well tolerated in this study. Incidences of both G3/4 and low-grade toxicities were low, not only during PEM+CIS induction CT, but also during the subsequent 2 cycles of full-dose PEM+CIS CT with concurrent thoracic RT.
Only Active Members that have purchased this event or have registered via an access code will be able to view this content. To view this presentation, please login or select "Add to Cart" and proceed to checkout.