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J. Kim
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MINI 17 - WT EGFR, Angiogenesis and OMD (ID 131)
- Event: WCLC 2015
- Type: Mini Oral
- Track: Treatment of Advanced Diseases - NSCLC
- Presentations: 1
- Moderators:R. Feld, R. Dziadziuszko
- Coordinates: 9/08/2015, 16:45 - 18:15, Mile High Ballroom 4a-4f
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MINI17.06 - Subgroup Analysis of East Asian Patients in the Phase III REVEL Trial (ID 729)
17:20 - 17:25 | Author(s): J. Kim
- Abstract
- Presentation
Background:
The REVEL trial demonstrated that second-line treatment with ramucirumab (RAM) plus docetaxel (DOC) significantly improved overall survival (OS) compared to placebo (PBO) plus DOC in the intent-to-treat (ITT) population (N=1253) of patients with stage IV non-small cell lung cancer. The REVEL trial also significantly improved progression-free survival (PFS) and objective response rates (ORRs). Results from the East Asia (EA) subgroup (Taiwan and Korea) analysis are presented.
Methods:
Subgroup analyses were performed in the EA ITT population, which consisted of all patients who were randomized in Taiwan (n=27) and Korea (n=62). Endpoints evaluated in the EA subgroup were OS, PFS, ORR, and safety. OS and PFS were analyzed using the Kaplan-Meier method and Cox proportional hazard model. Response was compared using the Cochran-Mantel-Haenszel test. ClinicalTrials.gov number NCT01168973.
Results:
In the 89 ITT EA patients, median OS was 15.44 months for the RAM plus DOC arm (n=43) and 10.17 months for PBO plus DOC arm (n=46) (HR: 0.762, 95% CI: 0.444–1.307). Median PFS was 4.88 months for the RAM plus DOC arm and 2.79 months for the PBO plus DOC arm (HR: 0.658, 95% CI: 0.408–1.060). The ORRs were 25.6% (95% CI: 13.5–41.2) in the RAM plus DOC arm and 9% (95% CI: 2.4–20.8) in the PBO plus DOC arm. Approximately two years after the enrollment of the first patient, in May 2012, the independent data monitoring committee recommended a reduction in the dose of DOC from 75 mg/m[2] to 60 mg/m[2] for newly enrolled EA patients, based on a higher incidence of neutropenia and febrile neutropenia associated with 75 mg/m[2] in EA patients compared to non-EA patients. This amendment resulted in a reduction in the toxicity associated with the original treatment regimen (Table). Table: Select grade ≥3 treatment-emergent adverse events, regardless of causality, by treatment arm and DOC dose in EA patients
Data are n (%). *Consolidated term.Preferred term RAM plus DOC (75 mg/m[2]) (n = 32) PBO plus DOC (75 mg/m[2]) (n = 33) RAM plus DOC (60 mg/m[2]) (n = 11) PBO plus DOC (60 mg/m[2]) (n = 13) Any 31 (96.9) 26 (78.8) 6 (54.5) 7 (53.8) Neutropenia* 26 (81.3) 24 (72.7) 6 (54.5) 5 (38.5) Febrile neutropenia 14 (43.8) 4 (12.1) 0 1 (7.7)
Conclusion:
Although not statistically powered to demonstrate significant improvement, the improved OS, PFS, and ORR observed in the EA subgroup treated with RAM plus DOC is consistent with the treatment effect observed in the overall ITT population in the REVEL trial. A dose reduction in DOC from 75 mg/m[2] to 60 mg/m[2] was associated with an improved safety profile and a reduction in the incidence of febrile neutropenia in the EA subgroup.
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P3.01 - Poster Session/ Treatment of Advanced Diseases – NSCLC (ID 208)
- Event: WCLC 2015
- Type: Poster
- Track: Treatment of Advanced Diseases - NSCLC
- Presentations: 1
- Moderators:
- Coordinates: 9/09/2015, 09:30 - 17:00, Exhibit Hall (Hall B+C)
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P3.01-077 - A Randomized, Phase II Study of Nimotuzumab Plus Gefitinib vs Gefitinib in Advanced Non-Small Cell Lung Cancer After Platinum- Based Chemotherapy (ID 1176)
09:30 - 09:30 | Author(s): J. Kim
- Abstract
Background:
Nimotuzumab is a humanized anti-epidermal growth factor receptor (EGFR) monoclonal antibody. We aim to evaluate the efficacy of dual inhibition of EGFR with nimotuzumab plus gefitinib in advanced non-small cell lung cancer (NSCLC) previously treated with platinum-based chemotherapy.
Methods:
An open label, randomized, phase II trial was conducted in 6 centers; 160 patients were randomized (1:1) to either nimotuzumab (200mg, IV weekly) plus gefitinib (250mg p.o. daily) or gefitinib alone until disease progression or intolerable toxicities. The primary endpoint was progression free survival (PFS) rate at 3 months. Secondary endpoints included PFS, overall survival (OS), overall response rate (ORR) and safety.
Results:
A total of 155 patients (78 in nimotuzumab plus gefitinib, 77 in gefitinib) were evaluable for efficacy and toxicity. Patient characteristics were well balanced in both groups. Majority of patients had adenocarcinoma histology (65.2%) and ECOG performance status 0 to 1 (83.5%). Among 102 patients with EGFR mutation results available, activating EGFR mutation was documented in 27 patients (12/50 in nimotuzumab plus gefitinib, 15/52 in gefitinib). With a median follow-up of 12.1 months, PFS rate at 3 months was 37.2% in nimotuzumab plus gefitinib and 48.1% in gefitinib [HR 1.03; 95% CI, 0.71–1.40; P=0.98]. Median PFS and OS were 2.0 months and 14.0 months in nimotuzumab plus gefitinib and 2.8 months and 13.2 months in gefitinib [HR 1.03, 95% CI 0.71-1.41, P=0.98 for PFS; HR 0.86, 95% CI 0.57–1.30, P=0.47 for OS]. The ORRs were 14.1% in nimotuzumab plus gefitinib and 22.1% in gefitinib, which was not statistically significant (P=0.76). As expected, patients with EGFR mutation showed significantly longer survival than those with wild-type EGFR or unknown EGFR mutation status (10.3 vs. 1.2 vs. 2.7 months, P < 0.001 for PFS; 23.5 vs. 13.5 vs. 10.5 months, P= 0.001 for OS). Combined treatment of nimotuzumab plus gefitinib did not show superior PFS compared to gefitinib alone in patients with EGFR mutation (13.5 vs. 10.2 months in gefitinib alone, P=0.30) and patients with wild-type EGFR (0.9 vs. 2.0 months in gefitinib alone, P=0.90). The median PFS was not significantly different between two treatment arms according to histology (2.8 vs. 2.9 months in gefitinib alone for adenocarcinoma, P=0.64; 1.2 vs. 2.8 months in gefitinib alone for non-adenocarcinoma, P=0.35). Adverse events (AEs) in both treatment arms were mostly grade 1 to 2 and easily manageable. Importantly, combined EGFR inhibition with nimotuzumab and gefitinib did not increase EGFR inhibition-related AEs, such as acneiform rash (32.4 vs. 30.3% in gefitinib alone, P=0.38), diarrhea (30.7 vs. 35.7% in gefitinib alone, P=0.32), and stomatitis (11.5 vs. 13.4% in gefitinib alone, P=0.19). There was no treatment-related death.
Conclusion:
The dual inhibition of EGFR with nimotuzumab plus gefitinib did not show superiority over gefitinib alone for second-line treatment of advanced NSCLC (NCT01498562).
