Publicado 15/02/2018 14:31:39CET
DARMSTADT, Germany and NEW YORK, February 15, 2018 /PRNewswire/ --
Not intended for UK-based media
Merck and Pfizer Inc. today announced results from the Phase III JAVELIN Lung 200 trial comparing avelumab* to docetaxel in patients with unresectable, recurrent or metastatic non-small cell lung cancer (NSCLC) whose disease progressed after treatment with a platinum-containing doublet therapy. While the trial did not meet its prespecified endpoint of improving overall survival (OS) in patients with programmed death ligand-1-positive (PD-L1+) (1% or higher) tumors (HR: 0.90 [96% CI: 0.72-1.12], p-value 0.1627, one-sided), the proportion of patients in the chemotherapy arm crossing over to immune checkpoint inhibitors outside the study was higher than previously reported in post-platinum immunotherapy clinical trials, and this may have confounded this trial outcome (percentage of patients receiving subsequent checkpoint inhibitor therapy: docetaxel arm 26.4%; avelumab arm 5.7%).
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However, improvements in OS versus the control arm were observed in the moderate-to-high PD-L1+ expression (50% or greater, which represented approximately 40% of the study population) and high PD-L1+ expression population (PD-L1+ expression 80% or greater, which represented approximately 30% of the study population) (HR: 0.67 [95% CI: 0.51-0.89], p-value 0.0052, two-sided; and HR 0.59 [95% CI: 0.42-0.83], p-value 0.0022, two-sided, respectively*). The safety profile for avelumab in this trial was consistent with that observed in the overall JAVELIN clinical development program; no new safety signals were identified.
"Avelumab performed in line with expectations in the trial from both an efficacy and safety perspective," said primary investigator Fabrice Barlesi, M.D., Ph.D., Head of Multidisciplinary Oncology and Therapeutic Innovations Department at Aix-Marseille University and the Assistance Publique Hopitaux de Marseille, France. "With immune checkpoint inhibitors approved for patients with previously treated, advanced non-small cell lung cancer, higher percentages of immunotherapy-naive patients are receiving subsequent checkpoint inhibitors in their progressive treatments. This was observed in the JAVELIN Lung 200 control arm and may have confounded the primary outcome of the study."
"Avelumab's overall clinical activity in this study supports its profile with expected efficacy across several endpoints and subgroups," said Luciano Rossetti, M.D., Executive Vice President, Global Head of Research & Development at the Biopharma business of Merck. "However, the chemotherapy group displayed improved overall survival compared with previous PDx trials, most likely due to the impact of crossover to other checkpoint inhibitors."
"We are committed to understanding the data in the context of the subpopulations and the impact of access to other immune checkpoint inhibitors," said Chris Boshoff, M.D., Ph.D., Senior Vice President and Head of Immuno-Oncology, Early Development and Translational Oncology, Pfizer Global Product Development. "We will continue to progress the broad avelumab program, exploring various indications."
Detailed results from the JAVELIN Lung 200 trial will be submitted for presentation at an upcoming medical congress, and the companies aim to share the data with regulatory agencies.
In 2017, avelumab first received accelerated approval by the US Food and Drug Administration (FDA) for metastatic Merkel cell carcinoma (mMCC) and for previously treated patients with locally advanced or metastatic urothelial carcinoma (mUC), followed by the European Commission (EC) approval for mMCC later that year.
The clinical development program for avelumab, known as JAVELIN, involves at least 30 clinical programs and over 7,000 patients evaluated across more than 15 different tumor types. In addition to NSCLC, these cancers include breast, gastric/gastro-esophageal junction, head and neck, Hodgkin's lymphoma, melanoma, mesothelioma, Merkel cell carcinoma, ovarian, renal cell carcinoma and urothelial carcinoma.
In December 2017, the FDA granted Breakthrough Therapy Designation for avelumab as a combination therapy for treatment-naive patients with advanced renal cell carcinoma.
*Avelumab is under clinical investigation for treatment of NSCLC and has not been demonstrated to be safe and effective for this indication. There is no guarantee that avelumab will be approved for NSCLC by any health authority worldwide.
*When the primary endpoint is not met, statistical significance cannot be formally claimed with the predefined statistical significance level (i.e., 0.05 two-sided). In this circumstance, the Type I error is not strictly controlled and the p-value should be interpreted cautiously.
About JAVELIN Lung 200
JAVELIN Lung 200 is a Phase III, randomized, open-label, multicenter trial investigating avelumab versus docetaxel in patients with locally advanced unresectable, metastatic or recurrent NSCLC whose disease has progressed after a platinum-containing doublet chemotherapy. The trial included 792 patients from approximately 260 sites in North America, South America, Asia, Africa, Australia and Europe. The primary objective was to demonstrate superior OS compared with docetaxel in patients with PD-L1+ unresectable, recurrent or metastatic NSCLC whose disease progressed after treatment with a platinum-containing doublet therapy.
About JAVELIN Lung Program
In addition to JAVELIN Lung 200, avelumab's lung cancer clinical development program includes several other ongoing clinical trials investigating avelumab alone and in combination. JAVELIN Lung 100 is a Phase III randomized open-label, multicenter trial to assess the safety and efficacy of avelumab, compared with platinum-based doublet chemotherapy, in patients with metastatic NSCLC who have not previously received any systemic treatment for their NSCLC. JAVELIN Lung 101 is a Phase Ib/II multicenter, international, dose-finding trial designed to evaluate the safety and efficacy of avelumab in combination with either Pfizer's crizotinib or lorlatinib in patients with advanced or metastatic NSCLC. JAVELIN Medley is a Phase Ib/II randomized open-label, multicenter dose-finding trial of avelumab in combination with other immune modulators in patients with selected locally advanced or metastatic solid tumors, including NSCLC.
About Non-Small Cell Lung Cancer
Globally, lung cancer is the most common cause of cancer-related deaths in men and the second most common in women,1 responsible for more deaths than colon, breast and prostate cancer combined.2 NSCLC is the most common type of lung cancer, accounting for 80 to 85% of all lung cancers.3 The five-year survival rate for people diagnosed with lung cancer that has spread (metastasized) to other areas of the body is 1%.4
Avelumab is a human anti-programmed death ligand-1 (PD-L1) antibody. Avelumab has been shown in preclinical models to engage both the adaptive and innate immune functions. By blocking the interaction of PD-L1 with PD-1 receptors, avelumab has been shown to release the suppression of the T cell-mediated antitumor immune response in preclinical models.5-7 Avelumab has also been shown to induce NK cell-mediated direct tumor cell lysis via antibody-dependent cell-mediated cytotoxicity (ADCC) in vitro.7-9 In November 2014, Merck and Pfizer announced a strategic alliance to co-develop and co-commercialize avelumab.
Approved Indications in the US