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Blinded arms of the study will continue to further evaluate MK-7684A with docetaxel versus docetaxel alone
RAHWAY, N.J.--(BUSINESS WIRE)-- Merck (NYSE: MRK), known as MSD outside of the United States and Canada, today provided an update on the open-label arm of the non-registrational Phase 2 KeyVibe-002 trial. KeyVibe-002 is evaluating MK-7684A, a coformulation of vibostolimab, an anti-TIGIT therapy, and pembrolizumab (KEYTRUDA®), Merck’s anti-PD-1 therapy, with or without docetaxel for the treatment of patients with metastatic non-small cell lung cancer (NSCLC) with progressive disease after treatment with immunotherapy and platinum-doublet chemotherapy. KeyVibe-002, a partially blinded study, was designed with two primary objectives: 1) to evaluate the efficacy of MK-7684A alone compared with docetaxel, a standard of care; and 2) in a blinded assessment, evaluate the efficacy of adding MK-7684A to docetaxel compared with docetaxel alone.
Results from the open-label arm of the study evaluating MK-7684A alone showed that the coformulation did not reach statistical significance for the primary endpoint of progression-free survival (PFS) and was numerically less effective compared with docetaxel. Merck is notifying study investigators that patients in this arm of the study should be switched to a standard of care, unless their physician considers the patient is benefitting from MK-7684A alone.
The blinded arms of the study will continue to further evaluate MK-7684A with docetaxel versus docetaxel alone. The safety profile of MK-7684A was consistent with that observed for vibostolimab and pembrolizumab in previously reported studies, with no new safety signals observed. Results will be presented at an upcoming medical meeting once further data from the blinded study arms are available.
Merck has an extensive clinical development program evaluating the safety and efficacy of MK-7684A alone and in combination with other agents in over 4,000 patients. Ongoing Phase 3 studies in lung cancer include KeyVibe-003, KeyVibe-006, KeyVibe-007 and KeyVibe-008, as well as KeyVibe-010 in melanoma.
“Through different approaches, such as novel combinations and coformulations, we hope to build on the foundation of KEYTRUDA to help even more patients with cancer,” said Dr. Eliav Barr, senior vice president, head of global clinical development and chief medical officer, Merck Research Laboratories. “We are grateful to the patients and investigators for their participation in this study evaluating MK-7684A in a heavily pre-treated group of patients, and look forward to additional data from the continuation of the blinded arms of KeyVibe-002. Based on responses we have seen in the signal-finding Phase 1/2 program to date, we are moving forward with our comprehensive research program evaluating MK-7684A across a wide range of cancers, including lung, other solid tumors and blood cancers.”
About KeyVibe-002 KeyVibe-002 is a randomized, partially blind Phase 2 trial (ClinicalTrials.gov, NCT04725188) evaluating MK-7684A, a coformulation of vibostolimab and pembrolizumab, with or without docetaxel versus placebo plus docetaxel in patients with metastatic NSCLC with progressive disease after treatment with immunotherapy and platinum-doublet chemotherapy. The trial’s primary endpoint is PFS, as assessed by blinded independent central review (BICR) per Response Evaluation Criteria in Solid Tumors Version (RECIST) v1.1. Key secondary endpoints include overall survival (OS) and objective response (OR), as assessed by BICR per RECIST v1.1. The study enrolled 255 patients who were randomly assigned in three separate study arms (1:1:1) to receive either:
KeyVibe-002, a non-registrational study, was designed with two primary objectives: 1) to evaluate the efficacy of MK-7684A alone compared with docetaxel, a standard of care; and 2) in a blinded assessment, evaluate the efficacy of adding MK-7684A to docetaxel, compared with docetaxel alone.
About lung cancer Lung cancer is the leading cause of cancer death worldwide. In 2020 alone, there were more than 2.2 million new cases and 1.8 million deaths from lung cancer globally. Non-small cell lung cancer is the most common type of lung cancer, accounting for about 81% of all cases. In the U.S., the overall five-year survival rate for patients diagnosed with lung cancer is 25%, which is a 21% improvement over the last five years. Improved survival rates are due, in part, to earlier detection and screening, reduction in smoking, advances in diagnostic and surgical procedures, as well as the introduction of new therapies. Early detection and screening remain an important unmet need, as 44% of lung cancer cases are not found until they are advanced. Only 5.8% of people in the U.S. who are eligible were screened for lung cancer in 2021.
About Merck’s research in lung cancer Merck is advancing research aimed at transforming the way lung cancer is treated, with a goal of improving outcomes for patients affected by this deadly disease. Through nearly 200 clinical trials evaluating more than 36,000 patients around the world, Merck is at the forefront of lung cancer research. In NSCLC, KEYTRUDA has five approved U.S. indications (see indications below) and is approved for advanced disease in more than 95 countries. Among Merck’s research efforts are trials focused on evaluating KEYTRUDA in earlier stages of lung cancer as well as identifying new combinations and coformulations with KEYTRUDA.
About vibostolimab Vibostolimab is a humanized anti-TIGIT therapy discovered and developed by Merck. Vibostolimab restores antitumor activity by blocking the TIGIT receptor from binding to its ligands (CD112 and CD155), thereby activating T lymphocytes that help destroy tumor cells. MK-7684A is a coformulation of both vibostolimab and pembrolizumab and is being evaluated in a wide range of cancers, including lung, other solid tumors and blood cancers.
About KEYTRUDA® (pembrolizumab) injection, 100 mg KEYTRUDA is an anti-programmed death receptor-1 (PD-1) therapy that works by increasing the ability of the body’s immune system to help detect and fight tumor cells. KEYTRUDA is a humanized monoclonal antibody that blocks the interaction between PD-1 and its ligands, PD-L1 and PD-L2, thereby activating T lymphocytes which may affect both tumor cells and healthy cells.
Merck has the industry’s largest immuno-oncology clinical research program. There are currently more than 1,600 trials studying KEYTRUDA across a wide variety of cancers and treatment settings. The KEYTRUDA clinical program seeks to understand the role of KEYTRUDA across cancers and the factors that may predict a patient's likelihood of benefitting from treatment with KEYTRUDA, including exploring several different biomarkers.
Selected KEYTRUDA® (pembrolizumab) Indications in the U.S.Non-Small Cell Lung Cancer KEYTRUDA, in combination with pemetrexed and platinum chemotherapy, is indicated for the first-line treatment of patients with metastatic nonsquamous non-small cell lung cancer (NSCLC), with no EGFR or ALK genomic tumor aberrations.
KEYTRUDA, in combination with carboplatin and either paclitaxel or paclitaxel protein-bound, is indicated for the first-line treatment of patients with metastatic squamous NSCLC.
KEYTRUDA, as a single agent, is indicated for the first-line treatment of patients with NSCLC expressing PD-L1 [tumor proportion score (TPS) ≥1%] as determined by an FDA-approved test, with no EGFR or ALK genomic tumor aberrations, and is:
KEYTRUDA, as a single agent, is indicated for the treatment of patients with metastatic NSCLC whose tumors express PD-L1 (TPS ≥1%) as determined by an FDA-approved test, with disease progression on or after platinum-containing chemotherapy. Patients with EGFR or ALK genomic tumor aberrations should have disease progression on FDA-approved therapy for these aberrations prior to receiving KEYTRUDA.
KEYTRUDA, as a single agent, is indicated as adjuvant treatment following resection and platinum-based chemotherapy for adult patients with stage IB (T2a ≥4 cm), II, or IIIA NSCLC.
See additional selected indications for KEYTRUDA in the U.S. after the Selected Important Safety Information
Selected Important Safety Information for KEYTRUDA Severe and Fatal Immune-Mediated Adverse Reactions KEYTRUDA is a monoclonal antibody that belongs to a class of drugs that bind to either the PD-1 or the PD-L1, blocking the PD-1/PD-L1 pathway, thereby removing inhibition of the immune response, potentially breaking peripheral tolerance and inducing immune-mediated adverse reactions. Immune-mediated adverse reactions, which may be severe or fatal, can occur in any organ system or tissue, can affect more than one body system simultaneously, and can occur at any time after starting treatment or after discontinuation of treatment. Important immune-mediated adverse reactions listed here may not include all possible severe and fatal immune-mediated adverse reactions.
Monitor patients closely for symptoms and signs that may be clinical manifestations of underlying immune-mediated adverse reactions. Early identification and management are essential to ensure safe use of anti–PD-1/PD-L1 treatments. Evaluate liver enzymes, creatinine, and thyroid function at baseline and periodically during treatment. For patients with TNBC treated with KEYTRUDA in the neoadjuvant setting, monitor blood cortisol at baseline, prior to surgery, and as clinically indicated. In cases of suspected immune-mediated adverse reactions, initiate appropriate workup to exclude alternative etiologies, including infection. Institute medical management promptly, including specialty consultation as appropriate.
Withhold or permanently discontinue KEYTRUDA depending on severity of the immune-mediated adverse reaction. In general, if KEYTRUDA requires interruption or discontinuation, administer systemic corticosteroid therapy (1 to 2 mg/kg/day prednisone or equivalent) until improvement to Grade 1 or less. Upon improvement to Grade 1 or less, initiate corticosteroid taper and continue to taper over at least 1 month. Consider administration of other systemic immunosuppressants in patients whose adverse reactions are not controlled with corticosteroid therapy.
Immune-Mediated Pneumonitis KEYTRUDA can cause immune-mediated pneumonitis. The incidence is higher in patients who have received prior thoracic radiation. Immune-mediated pneumonitis occurred in 3.4% (94/2799) of patients receiving KEYTRUDA, including fatal (0.1%), Grade 4 (0.3%), Grade 3 (0.9%), and Grade 2 (1.3%) reactions. Systemic corticosteroids were required in 67% (63/94) of patients. Pneumonitis led to permanent discontinuation of KEYTRUDA in 1.3% (36) and withholding in 0.9% (26) of patients. All patients who were withheld reinitiated KEYTRUDA after symptom improvement; of these, 23% had recurrence. Pneumonitis resolved in 59% of the 94 patients.
Pneumonitis occurred in 8% (31/389) of adult patients with cHL receiving KEYTRUDA as a single agent, including Grades 3-4 in 2.3% of patients. Patients received high-dose corticosteroids for a median duration of 10 days (range: 2 days to 53 months). Pneumonitis rates were similar in patients with and without prior thoracic radiation. Pneumonitis led to discontinuation of KEYTRUDA in 5.4% (21) of patients. Of the patients who developed pneumonitis, 42% interrupted KEYTRUDA, 68% discontinued KEYTRUDA, and 77% had resolution.
Pneumonitis occurred in 41 (7%) patients, including fatal (0.2%), Grade 4 (0.3%), and Grade 3 (1%) adverse reactions. In adult patients who received adjuvant therapy for NSCLC, patients received high-dose corticosteroids for a median duration of 10 days (range: 1 day to 2.3 months). Pneumonitis led to discontinuation of KEYTRUDA in 26 (4.5%) of patients. Of the patients who developed pneumonitis, 54% interrupted KEYTRUDA, 63% discontinued KEYTRUDA, and 71% had resolution.
Immune-Mediated Colitis KEYTRUDA can cause immune-mediated colitis, which may present with diarrhea. Cytomegalovirus infection/reactivation has been reported in patients with corticosteroid-refractory immune-mediated colitis. In cases of corticosteroid-refractory colitis, consider repeating infectious workup to exclude alternative etiologies. Immune-mediated colitis occurred in 1.7% (48/2799) of patients receiving KEYTRUDA, including Grade 4 (
