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A. Kazarnowicz
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O03 - NSCLC - Targeted Therapies I (ID 113)
- Event: WCLC 2013
- Type: Oral Abstract Session
- Track: Medical Oncology
- Presentations: 1
- Moderators:J. Ross, J.C. Yang
- Coordinates: 10/28/2013, 10:30 - 12:00, Bayside Auditorium B, Level 1
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O03.02 - Randomized Phase-3 trial (INSPIRE) of Necitumumab plus Cisplatin-Pemetrexed versus Cisplatin-Pemetrexed Alone as First-Line Therapy in Stage IV Non-Squamous NSCLC (ID 2337)
10:30 - 12:00 | Author(s): A. Kazarnowicz
- Abstract
- Presentation
Background
Necitumumab is a human IgG1 anti-EGFR1 monoclonal antibody that competes for the binding of natural ligands to this receptor and prevents receptor activation. EGFR1 is detectable in approximately 85% of advanced NSCLC tumors. This phase 3 study investigated necitumumab in combination with first-line chemotherapy in advanced non-squamous NSCLC.Methods
Patients with histologically or cytologically proven stage IV non-squamous NSCLC were randomized 1:1 to either Arm A: cisplatin 75mg/m[2] i.v.-pemetrexed 500mg/m[2] i.v. (Cis + PEM) on Day 1+ necitumumab 800mg i.v. on Days 1 and 8 of a 21-day cycle or Arm B: Cis+PEM alone. Patients received these regimens for up to six cycles. For patients in Arm A with at least stable disease, necitumumab continued until PD or intolerable toxicity. The primary endpoint was overall survival (OS). Secondary endpoints included progression-free survival (PFS), objective response rate (ORR), safety, and EGFR protein expression level by immunohistochemistry (H-score) utilizing archived tumor tissue based on a mandatory tissue collection. The planned sample size of this study was 947 patients (assuming a hazard ratio [HR] of 0.8 would allow 85% power at 2-sided alpha level of 0.05). After 633 patients, enrollment was stopped (after Feb 2011) following an Independent Data Monitoring Committee (IDMC) recommendation.Results
Between Nov 2009 and Feb 2011 633 patients were randomized (315 Arm A; 318 Arm B). Baseline characteristics were balanced between the arms; 67.0% were male and 33.0% female; ECOG-PS 0/1 94.2 % and PS 2 5.7 %. No difference between treatment arms was observed for OS (median 11.3 vs 11.5 months; HR 1.01 95%-CI [0.84, 1.21]), PFS (median 5.6 vs 5.6 months, HR 0.96 95%-CI [0.80, 1.16]) and ORR (31.1 vs 32.1%; Odds ratio 0.96 95%-CI [0.68, 1.34]). The exploratory analysis in 490 patients assessable for H-score revealed no association between H-score and differences in efficacy between treatment arms (H-score < 200: mOS 8.97 vs 9.72 months, HR 1.07, mPFS 4.90 vs 4.76 months, HR 0.95, ORR 27.1 vs 26.0%; H-score ≥ 200: mOS 15.01 vs 13.34 months, HR 1.03, mPFS 5.59 vs 5.62 months, HR 0.94, ORR 39.6 vs 39.4%). Grade ≥ 3 treatment-emergent adverse events (AEs) occurring more frequently in Arm A included skin or subcutaneous disorders (14.1 vs 0.3%), thromboembolic events (9.5 vs 6.4%), hypomagnesaemia (7.6 vs 2.2%), asthenia (6.9 vs 1.9%), vomiting (6.6 vs 3.2%), dyspnea (5.3 vs 2.6%) and diarrhea (4.3 vs 2.2%). The frequency of study drug related deaths was 4.9% and 2.9% in Arms A and B, respectively.Conclusion
In this study, the addition of necitumumab did not improve the efficacy outcome over cisplatin plus pemetrexed alone in advanced non-squamous-NSCLC. The EGFR H-score did not seem to predict the efficacy outcomes of necitumumab in combination with cisplatin plus pemetrexed. The addition of necitumumab resulted in a higher frequency of grade ≥ 3 AE (skin reaction, GI, asthenia and other) and an imbalance of grade ≥ 3 thromboembolic events. Further biomarker studies are ongoing.Only 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, select "Add to Cart" and proceed to checkout. If you would like to become a member of IASLC, please click here.
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O21 - SCLC II (ID 119)
- Event: WCLC 2013
- Type: Oral Abstract Session
- Track: Medical Oncology
- Presentations: 1
- Moderators:M. Ahn, P. Lara
- Coordinates: 10/29/2013, 16:15 - 17:45, Parkside Ballroom B, Level 1
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O21.05 - A multicenter, double-blind, placebo-controlled, randomized phase 2 study of ganitumab or rilotumumab with platinum-based chemotherapy as first-line treatment for extensive-stage small-cell lung cancer (SCLC) (ID 725)
16:15 - 17:45 | Author(s): A. Kazarnowicz
- Abstract
- Presentation
Background
The type 1 insulin-like growth factor receptor (IGF1R) and MET, the receptor for hepatocyte growth factor (HGF)/scatter factor, appear to play key roles in SCLC. Ganitumab and rilotumumab are investigational, fully human monoclonal antibodies targeting IGF1R and HGF, respectively. A phase 1b/2 study evaluated ganitumab or rilotumumab combined with etoposide plus carboplatin (CE) or cisplatin (PE) in extensive-stage SCLC. The phase 1b results were previously reported (Lorigan et al. Ann Oncol 2010;21[supplement 8]: abstract 444P). Here, the phase 2 results are reported.Methods
Key eligibility criteria: ≥18 years, confirmed SCLC, ECOG performance status ≤1, no prior chemotherapy. Patients were randomized 1:1:1 to receive blinded investigational product (IP) either ganitumab (18 mg/kg IV, day 1) or rilotumumab (15 mg/kg IV, day 1) or placebo, with etoposide (100 mg/m[2] IV, days 1-3) plus, at investigator’s discretion, either carboplatin (AUC=5 mg/mL*minute IV, day 1) or cisplatin (75 mg/m[2] IV, day 1) every three weeks for 4-6 cycles followed by IP monotherapy. Patients were stratified by gender and chemotherapy (CE; PE). Primary endpoint: overall survival (OS). Key secondary endpoints included progression-free survival (PFS), objective response rate (ORR), adverse events (AEs), pharmacokinetics.Results
185 patients (ganitumab/rilotumumab/placebo: 62/62/61) were enrolled between 2 February 2010 and 12 January 2011. Male: 77%/76%/77%. Median age: 60/61/61 years. More patients received carboplatin (41/40/40) than cisplatin (21/22/21). Most common reason for discontinuation of IP was disease progression (69%/61%/74%). Among 179 patients (59/61/59) who received IP, the most frequent any grade AEs (occurring in ≥30% of patients in any arm) were neutropenia (69%/59%/71%), anemia (39%/34%/36%), nausea (41%/30%/22%), alopecia (41%/23%/27%), thrombocytopenia (22%/30%/12%), and vomiting (19%/10%/31%). Grade ≥3 AEs and serious AEs were reported in 69%/72%/80% and 39%/38%/36% of patients, respectively. There were three IP-related grade 5 AEs: cardiac arrest (rilotumumab, n=1), febrile neutropenia (rilotumumab, n=1), gastric ulcer hemorrhage (placebo, n=1). No neutralizing antibodies were observed for either ganitumab or rilotumumab. Efficacy is shown in the table. Ganitumab and rilotumumab combined with chemotherapy showed comparable exposures as those under monotherapy and did not affect the pharmacokinetics of chemotherapy.
[a]Adjusted for baseline lactate dehydrogenase levels and stratification factors. CI=confidence interval; HR=hazard ratio.Ganitumab (n=62) Rilotumumab (n=62) Placebo (n=61) OS Median (95% CI) months 10.7 (8.1–14.1) 12.2 (8.8–14.6) 10.8 (9.4–11.9) Adjusted HR[a] (95% CI) 1.01 (0.67–1.52) 0.91 (0.60–1.39) PFS Median (95% CI) months 5.5 (4.4–5.7) 5.4 (4.4–5.7) 5.4 (4.6–5.8) Adjusted HR[a] (95% CI) 1.03 (0.70–1.52) 1.03 (0.69–1.52) Objective Response Complete response, n (%) 0 (0) 2 (3) 1 (2) Partial response, n (%) 39 (63) 40 (65) 35 (57) Stable disease, n (%) 13 (21) 12 (19) 16 (26) Conclusion
In this study of chemonaïve patients with extensive-stage SCLC, the combination of ganitumab or rilotumumab with CE or PE was tolerable; no unexpected toxicities were observed. There were no meaningful improvements in OS, PFS, or ORR with either combination. Survival analyses in biomarker and pharmacokinetic subgroups are ongoing.Only 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, select "Add to Cart" and proceed to checkout. If you would like to become a member of IASLC, please click here.
