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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
MO25.01 - Interim analysis of the Spanish Lung Cancer Group (SLCG) randomized phase II trial of thoracic radiotherapy (RT) concurrent with cisplatin (P) plus oral vinorelbine (OV) or etoposide (E) for unresectable locally advanced (LA) stage III non-small cell lung cancer (NSCLC). (GECP10/02). (ID 2658)
10:30 - 12:00 | Author(s): J. Muñoz
Chemoradiation is the standard of care for the treatment of unresectable LA-NSCLC. Cisplatin plus either etoposide or vinorelbine are two of the chemotherapy (CT) regimens widely used for the disease concurrently with radiotherapy. Oral vinorelbine is a formulation which has achieved comparable results to the IV vinorelbine. The purpose of the study is to evaluate the efficacy and safety of cisplatin when combined with etoposide or oral vinorelbine with radical radiation for the management of stage III NSCLC.
Patients (pts) between 18 and 75 years, with histologically proven untreated and unresectable LA stage IIIA/IIIB NSCLC, adequate bone marrow, hepatic and renal function, ECOG PS 0-1, were randomized to: Arm OV-P: OV 60 mg/m D1, D8 cycle 1 and 80 mg/m cycle 2 (if no grade 3-4 toxicity) plus P 80 mg/m D1 every 3 weeks for 2 cycles as induction; patients without progression received OV 40 mg/m D1, D8, and P 80 mg/m D1 every 3 weeks for 2 more cycles (4 cycles in total). Arm E-P: E 50 mg/m intravenously D1 to D5 plus P 50 mg/m D1, D8 every 4 weeks for 2 cycles. Both regimens administered with concurrent RT 66 Gy in 6.5 weeks. The primary endpoint was progression free survival using RECIST 1.1, and secondary endpoints were overall response rate, overall survival, and safety profile. To guarantee an overall type-1 α error (one side) no greater than 0.05 and a type II (β) error 0.1 for the primary endpoint of PFS, a sample size of 134 pts allocated in a 1:1 ratio is planned.
Since August 2011 77 pts have been recruited. 46 pts have been included in the interim analysis, 23 pts have been randomly allocated to each treatment arm. Patient’s characteristics were: Male 91.3%; median age 64 (range 44-75); PS1 56.5%; smokers 46.8%; adenocarcinoma 40.4% / squamous 55.3%; stage IIIA 46.8% / IIIB 53.2%. Median of months between initial diagnosis and study start was 1 (range 0.3-15.7). Safety: 118 cycles (cy) were analysed, 79 in arm OV-P and 39 in arm E-P. Hematological toxicities arms OV-P/E-P (% cy): grade (g) 3/4 neutropenia 8.9%/13.1%; g3 thrombocytopenia 0%/5.3%; g3 anemia 0%/2.6%; febrile neutropenia 3 cases on OV-P arm (all during induction CT on cy 1) and 1 case on E-P arm (during concurrent chemoradiation). Non-hematological toxicities arms OV-P/E-P (% cy): g3 esophagitis/mucositis 1.3%/15.5%; g3 infection without neutropenia 1.3%/5.1%. No treatment-related deaths were reported. There was no remarkable difference in other toxicities between both arms. 39 pts completed the treatment as per protocol, 19 in arm OV-P and 20 in arm E-P. Overall response rates were 73.7% and 50% for the OV-P and the E-P arm, respectively.
This interim analysis shows that OV-P and E-P when administered concurrently with RT have a manageable safety profile with efficacy. Safety data is consistent with other studies reported for both chemoradiation regimens. Based on these positive results for safety, accrual is ongoing. Clinical trial information EudraCT 2010-022927-31.
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P3.09 - Poster Session 3 - Combined Modality (ID 214)
- Event: WCLC 2013
- Type: Poster Session
- Track: Combined Modality
- Presentations: 1
- Coordinates: 10/30/2013, 09:30 - 16:30, Exhibit Hall, Ground Level
P3.09-016 - A phase II study of cisplatin and oral vinorelbine concomitantly with radiotherapy in locally advanced non-small-cell lung cancer treatment: Eficacy and safety results. (ID 2687)
09:30 - 16:30 | Author(s): J. Muñoz
It has been shown an improvement in survival with concurrent chemoradiation versus the sequential administration of both treatment modalities. In patients with unresectable stage III disease, chemotherapy may best be started soon after the diagnosis of unresectable NSCLC has been made. Cisplatin (CDDP) plus oral vinorelbine (OV) as induction and concomitant regimen with radiotherapy (RT) has shown good efficacy outcomes and safety profile (Vokes, Fournel, Krzakowski). The objective of this study was to evaluate the effectiveness and toxicities of the combination of CDDP and OV given at full doses concomitantly with RT in locally advanced (LA) non-small-cell lung cancer (NSCLC).
Between February 2010 and December 2011, 48 chemo-naïve patients (p) with histologically confirmed unresectable stage IIIA/IIIB LA NSCLC were treated. Treatment consisted of 4 cycles (cy) of OV 60 mg/m on days 1 and 8 and CDDP 80 mg/m every 3 weeks plus RT 66 Gy starting on day 1, cy 2. The primary objective is the overall response rate (ORR) using RECIST 1.0. A standard Fleming two stage design was used. The sample size calculated with a type 1 error of 0.05 and type 2 error of 0.01, taking P~0~ 20% and P~1~ 40%. The study was approved by the local Ethical Committees of the participating institutions.
Patient’s characteristics were: Median age 61 years (range 34-72); ≥ 65y 42%; males 89.6%; PS0 42% / PS1 58%; smokers 52%; adenocarcinoma 30% / squamous 64%; stage IIIA 46% / IIIB 54%. Median of days between initial diagnosis and study start was 28 days. 75% p completed the treatment as per protocol. Relative dose intensities of OV and CDDP were 97%/98%, respectively. 14.7% of cy were delayed, 11.8% due to toxicity. Dose of day 8 OV was canceled or delayed in 8.2% of cy. Hematological toxicities (% p): grade (g) 3/4 neutropenia 33.3%; g3 anemia 12.5%; g3/4 thrombocytopenia 16.6%; febrile neutropenia concomitant during CT-RT 14.6%. Non-hematological toxicities (% p): g3 esophagitis 12.5%; g3 dyspnea 4.2%, g3 vomiting 4.2%, g3-4 infection 4.2%. 2 treatment-related deaths were reported, both during cycle 1. 42 p (87.5%) received RT, 7.1% under 60 Gy, 23.8% with RT delays or interruptions due to adverse events. 44 p were evaluable for response. ORR 77.3% [CI 95%, 62.2-88.5], DCR 88.6% [CR 2 p (4.5%), PR 32 p (72.7%), SD 5 p (11.4%)]. Median follow-up was 19 months (m) (range 0.47-39.4). Median progression free survival (PFS), 12 m [CI 95%, 7.3-16.6]; 1-year PFS, 48.3% [CI 95%, 33.6-63], 2-year PFS, 30% [CI 95%, 15.8-44.2]. Median time to progression (TTP), 13.3 m [CI 95%, 9.7-16.9]; 1-year TTP, 51.7% [CI 95%, 36.9-66.6], 2-year TTP, 33.3% [18.5-48.1]. Median overall survival was not reached; 1-year and 2-year survival rates were, 72.3% [CI 95%, 59.6-85.1] and 49.4% [CI 95%, 33.8-64.9], respectively.
This prospective phase II trial shows that the schedule of cisplatin plus oral vinorelbine concomitant with radiotherapy from 2[nd] cycle obtains a good efficacy with an acceptable safety profile. Clinical trial information: EudraCT Number: 2009-010436-17