KENILWORTH - Merck (NYSE: MRK), known as MSD outside the United States and Canada, today announced that the Phase 3 KEYNOTE-604 trial investigating KEYTRUDA, Merck's anti-PD-1 therapy, in combination with chemotherapy met one of its dual primary endpoints of progression-free survival (PFS) in the first-line treatment of patients with extensive stage small cell lung cancer (ES-SCLC).
In the study, treatment with KEYTRUDA in combination with chemotherapy (etoposide plus cisplatin or carboplatin) resulted in a statistically significant improvement in PFS compared to chemotherapy alone (HR=0.75 [95% CI, 0.61-0.91]), which was observed at a prior interim analysis. At the final analysis of the study, there was also an improvement in overall survival (OS) for patients treated with KEYTRUDA in combination with chemotherapy compared to chemotherapy alone; however, these OS results did not meet statistical significance per the pre-specified statistical plan (HR=0.80 [95% CI, 0.64-0.98]). The safety profile of KEYTRUDA in this trial was consistent with that observed in previously reported studies. Results will be presented at an upcoming medical meeting and discussed with regulatory authorities.
'Results of KEYNOTE-604 demonstrated the potential of KEYTRUDA, in combination with chemotherapy, to improve outcomes for patients newly diagnosed with extensive stage small cell lung cancer, a highly aggressive malignancy,' said Dr. Roy Baynes, senior vice president and head of global clinical development, chief medical officer, Merck Research Laboratories. 'We sincerely thank the patients and investigators for their participation in this study and are committed to helping patients who face difficult-to-treat types of lung cancer.'
In addition to KEYTRUDA's five current indications in lung cancer, Merck is continuing to study KEYTRUDA across multiple settings and stages of lung cancer through a broad clinical program, which is comprised of more than 10,000 patients enrolled or expected to be enrolled across 20 Merck-sponsored clinical studies.
About KEYNOTE-604
KEYNOTE-604 is a randomized, double-blind, placebo-controlled Phase 3 trial (ClinicalTrials.gov, NCT03066778) investigating KEYTRUDA in combination with chemotherapy compared to chemotherapy alone in patients with newly diagnosed ES-SCLC. The dual primary endpoints were OS and PFS. Secondary endpoints included objective response rate (ORR), duration of response (DOR), safety and quality of life (QoL). The study enrolled 453 patients who were randomized to receive either: KEYTRUDA (200 mg fixed dose on Day 1 of each 21-day cycle) in combination with etoposide (100 mg/m2 on Days 1, 2 and 3) and investigator's choice of platinum chemotherapy (carboplatin titrated to AUC 5 on Day 1 or cisplatin 75 mg/m2 on Day 1); or Placebo in combination with etoposide (100 mg/m2 on Days 1, 2 and 3) and investigator's choice of platinum chemotherapy (carboplatin titrated to AUC 5 mg/mL/min on Day 1 or cisplatin 75 mg/m2 on Day 1).
About Lung Cancer
Lung cancer, which forms in the tissues of the lungs, usually within cells lining the air passages, is the leading cause of cancer death worldwide. Each year, more people die of lung cancer than die of colon and breast cancers combined. The two main types of lung cancer are non-small cell and small cell. Non-small cell lung cancer (NSCLC) is the most common type of lung cancer, accounting for about 85% of all cases. Small cell lung cancer (SCLC) accounts for about 10 to 15% of all lung cancers. The five-year survival rate for patients diagnosed in the U.S. with any stage of SCLC is estimated to be 6%.
About KEYTRUDA (pembrolizumab) Injection, 100mg
KEYTRUDA is an anti-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 1,000 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.
Merck's Focus on Cancer
Our goal is to translate breakthrough science into innovative oncology medicines to help people with cancer worldwide. At Merck, the potential to bring new hope to people with cancer drives our purpose and supporting accessibility to our cancer medicines is our commitment. As part of our focus on cancer, Merck is committed to exploring the potential of immuno-oncology with one of the largest development programs in the industry across more than 30 tumor types. We also continue to strengthen our portfolio through strategic acquisitions and are prioritizing the development of several promising oncology candidates with the potential to improve the treatment of advanced cancers.
About Merck
For more than a century, Merck, a leading global biopharmaceutical company known as MSD outside of the United States and Canada, has been inventing for life, bringing forward medicines and vaccines for many of the world's most challenging diseases. Through our prescription medicines, vaccines, biologic therapies and animal health products, we work with customers and operate in more than 140 countries to deliver innovative health solutions. We also demonstrate our commitment to increasing access to health care through far-reaching policies, programs and partnerships. Today, Merck continues to be at the forefront of research to advance the prevention and treatment of diseases that threaten people and communities around the world - including cancer, cardio-metabolic diseases, emerging animal diseases, Alzheimer's disease and infectious diseases including HIV and Ebola.
Forward-Looking Statement of Merck & Co., Inc., Kenilworth, N.J., USA
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