Eisai and Merck & Co., Inc. Present Results from Phase 3 LEAP-002 Trial Evaluating LENVIMA (lenvatinib) Plus KEYTRUDA (pembrolizumab) Versus LENVIMA Monotherapy in Patients With Unresectable Hepatocellular Carcinoma JCN Newswire

Eisai and Merck & Co., Inc. Present Results from Phase 3 LEAP-002 Trial Evaluating LENVIMA (lenvatinib) Plus KEYTRUDA (pembrolizumab) Versus LENVIMA Monotherapy in Patients With Unresectable Hepatocellular Carcinoma

TOKYO and RAHWAY, N.J., Sep 12, 2022 - (JCN Newswire via SEAPRWire.com) - Eisai and Merck & Co., Inc., Rahway, NJ, USA (known as MSD outside of the United States and Canada) today announced the first presentation of results from the final analysis of the Phase 3 LEAP-002 trial investigating LENVIMA, the orally available multiple receptor tyrosine kinase inhibitor discovered by Eisai, plus KEYTRUDA, the anti-PD-1 therapy from Merck & Co., Inc., Rahway, NJ, USA versus LENVIMA monotherapy, as a first-line treatment for patients with unresectable hepatocellular carcinoma (uHCC). Results are being presented during a proffered paper session at the European Society for Medical Oncology (ESMO) Congress 2022, being held in Paris, France and virtually from Sept. 9-13 (abstract #LBA34).In the final analysis of the trial, there was a trend toward improvement for one of the study's dual primary endpoints, overall survival (OS), for patients treated with LENVIMA plus KEYTRUDA versus LENVIMA monotherapy; however, the results did not meet statistical significance per the pre-specified statistical plan (HR=0.84 [95% CI: 0.71-1.00]; p=0.0227). The median OS was 21.2 months (95% CI: 19.0-23.6) for LENVIMA plus KEYTRUDA and 19.0 months (95% CI: 17.2-21.7) for LENVIMA monotherapy. Additionally, treatment with LENVIMA plus KEYTRUDA resulted in a trend toward improvement in the trial's other dual primary endpoint of progression-free survival (PFS) versus LENVIMA monotherapy; however, the results did not meet the pre-specified threshold at the first interim analysis for statistical significance (HR=0.87 [95% CI: 0.73-1.02]; p=0.0466). "The LEAP-002 trial reflects our research strategy to build on evolving standards of care to further improve outcomes for more people with unresectable hepatocellular carcinoma," said Dr. Gregory Lubiniecki, Vice President, Global Clinical Development, Merck & Co., Inc., Rahway, NJ, USA Research Laboratories. "The median overall survival of 21.2 months seen with KEYTRUDA plus LENVIMA provides critical insights for further research into the potential role of this combination.""While the outcome is not what we had hoped, it is important for us to see that patients in the trial treated with LENVIMA monotherapy had a median overall survival of 19.0 months," said Corina Dutcus, M.D., Senior Vice President, Clinical Research, Oncology at Eisai Inc. "Findings from the LEAP-002 trial will not only help advance our understanding and application of LENVIMA plus KEYTRUDA across our clinical development program but will also provide physicians with additional information on LENVIMA monotherapy's use in unresectable hepatocellular carcinoma, where it is currently approved as a treatment option in multiple regions around the world, including the U.S., the European Union (EU), Japan and China."LENVIMA monotherapy is approved for the first-line treatment of patients with uHCC in the U.S., the EU and China and for patients with uHCC in Japan. The approval of LENVIMA was based on results of the Phase 3 REFLECT trial, which evaluated the efficacy and safety of LENVIMA versus sorafenib for the first-line treatment of patients with uHCC.LENVIMA (marketed as KISPLYX for renal cell carcinoma [RCC] in the EU) plus KEYTRUDA is approved in the U.S., the EU and Japan for the treatment of certain types of advanced endometrial carcinoma and advanced RCC. Eisai and Merck & Co., Inc., Rahway, NJ, USA are studying the LENVIMA plus KEYTRUDA combination through the LEAP (LEnvatinib And Pembrolizumab) clinical program in multiple tumor types, including but not limited to endometrial carcinoma, HCC, melanoma, non-small cell lung cancer, RCC, head and neck cancer, colorectal cancer, gastric cancer and esophageal cancer, across more than 15 clinical trials. LEAP-002 study design and final analysis results (abstract #LBA34)LEAP-002 is a multicenter, randomized, double-blinded, active-controlled Phase 3 trial (ClinicalTrials.gov, NCT03713593(New Window)) evaluating LENVIMA plus KEYTRUDA versus LENVIMA monotherapy for the first-line treatment of adult patients with uHCC. Patients were randomized 1:1 to receive LENVIMA (12 mg orally once daily [for patients with screening body weight of at least 60 kg] or 8 mg orally once daily [for patients with screening body weight less than 60 kg]) plus KEYTRUDA (200 mg intravenously [IV] on Day 1 of each three-week cycle); or LENVIMA (12 mg orally once daily [for patients with screening body weight of at least 60 kg] or 8 mg orally once daily [for patients with screening body weight less than 60 kg]) plus saline placebo (IV administered on Day 1 of each three-week cycle). LENVIMA was administered until progressive disease or unacceptable toxicity. KEYTRUDA/placebo was administered for up to 35 cycles (approximately two years).The dual primary endpoints were PFS, as assessed by blinded independent central review (BICR) per Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST v1.1; RECIST v1.1 has been modified for this study to follow a maximum of 10 target lesions in total and a maximum of five target lesions per organ), and OS. Objective response rate (ORR), as assessed by BICR per RECIST v1.1, was a key secondary endpoint. The trial was designed with two interim analyses and a final analysis for OS. Pre-specified efficacy boundaries were one-sided p=0.002 for PFS at interim analysis 1 and p=0.0185 for OS at the final analysis.As of the data cut-off for the final analysis (June 21, 2022), a total of 794 patients were enrolled and treated, with a median follow-up of 32.1 months (range, 25.8-41.1). A total of 534 OS events had occurred, with 36 patients (9.1%) in the combination arm and 24 patients (6.1%) in the LENVIMA monotherapy arm remaining on study treatment.The median OS was 21.2 months (95% CI: 19.0-23.6) for LENVIMA plus KEYTRUDA versus 19.0 months (95% CI: 17.2-21.7) for LENVIMA monotherapy at the final analysis. The median PFS was 8.2 months (95% CI, 6.4-8.4) for LENVIMA plus KEYTRUDA versus 8.0 months (95% CI: 6.3-8.2) for LENVIMA monotherapy at the first interim analysis and 8.2 months (95% CI: 6.3-8.3) versus 8.1 months (95% CI: 6.3-8.3), respectively, at the final analysis. The ORR was 26.1% (95% CI: 21.8-30.7) for LENVIMA plus KEYTRUDA versus 17.5% (95% CI: 13.9-21.6) for LENVIMA monotherapy at the final analysis. Median duration of response was 16.6 months (range, 2.0+ to 33.6+) in the KEYTRUDA plus LENVIMA arm versus 10.4 months (range, 1.9 to 35.1+) in the LENVIMA monotherapy arm at the final analysis.The safety profile of LENVIMA plus KEYTRUDA was consistent with previously reported data on the combination. Grade 3-4 treatment-related adverse events (TRAEs) occurred in 61.5% of patients treated with LENVIMA plus KEYTRUDA versus 56.7% of patients treated with LENVIMA monotherapy. Grade 5 TRAEs occurred in 1.0% of patients treated with LENVIMA plus KEYTRUDA versus 0.8% of patients treated with LENVIMA monotherapy. In patients treated with LENVIMA plus KEYTRUDA, the five most common TRAEs of any grade were hypertension (43.3%), diarrhea (40.3%), hypothyroidism (40.0%), palmar-plantar erythrodysesthesia (PPE) syndrome (33.2%) and proteinuria (30.6%). In patients treated with LENVIMA monotherapy, the five most common TRAEs of any grade were hypertension (46.8%), hypothyroidism (35.7%), proteinuria (34.9%), diarrhea (33.9%) and PPE syndrome (30.6%). Post-study systematic anti-cancer treatments were given for 44.1% of patients receiving LENVIMA plus KEYTRUDA versus 52.1% of those receiving LENVIMA monotherapy.Eisai Co., Ltd.Public Relations:+81-(0)3-3817-5120Merck & Co., Inc., Kenilworth, N.J., U.S.A.Media RelationsMelissa Moody: +1-(215) 407-3536Nikki Sullivan: +1-(718) 644-0730 Copyright 2022 JCN Newswire. All rights reserved. (via SEAPRWire)
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Eisai and Merck & Co., Inc., Rahway, NJ, USA Provide Update on Phase 3 LEAP-002 Trial JCN Newswire

Eisai and Merck & Co., Inc., Rahway, NJ, USA Provide Update on Phase 3 LEAP-002 Trial

TOKYO and RAHWAY, N.J., Aug 4, 2022 - (JCN Newswire via SEAPRWire.com) - Eisai and Merck & Co., Inc., Rahway, NJ, USA (known as MSD outside the United States and Canada) today announced that the Phase 3 LEAP-002 trial investigating LENVIMA, the orally available multiple receptor tyrosine kinase inhibitor discovered by Eisai, plus KEYTRUDA, the anti-PD-1 therapy from Merck & Co., Inc., Rahway, NJ, USA, versus LENVIMA monotherapy did not meet its dual primary endpoints of overall survival (OS) and progression-free survival (PFS) as a first-line treatment for patients with unresectable hepatocellular carcinoma (uHCC). There were trends toward improvement in OS and PFS for patients who received LENVIMA plus KEYTRUDA versus LENVIMA monotherapy; however, these results did not meet statistical significance per the pre-specified statistical plan. The median OS of the LENVIMA monotherapy arm in LEAP-002 was longer than that observed in previously reported clinical trials evaluating LENVIMA monotherapy in uHCC. The safety profile of LENVIMA plus KEYTRUDA was consistent with previously reported data on the combination. Eisai and Merck & Co., Inc., Rahway, NJ, USA plan to present these data at an upcoming medical conference."Our joint clinical development program for KEYTRUDA plus LENVIMA is designed to address unmet needs for some of the most challenging-to-treat types of cancer, like hepatocellular carcinoma," said Dr. Gregory Lubiniecki, Vice President, Global Clinical Development, Merck & Co., Inc., Rahway, NJ, USA Research Laboratories. "We remain confident in the potential of this combination based on the body of evidence we've seen to date and will continue to investigate its role across multiple types of cancer.""Aiming for further improvement in the treatment of patients with unresectable HCC, we selected LENVIMA monotherapy, a standard of care option, as the control arm of the LEAP-002 trial," said Corina Dutcus, M.D., Senior Vice President, Clinical Research, Oncology at Eisai Inc. "While results evaluating the combination are not what we had hoped for, we will continue to contribute to the care of patients with unresectable HCC by applying valuable knowledge from the LEAP-002 trial."LENVIMA monotherapy is approved for the first-line treatment of patients with uHCC in the U.S., Europe, and China, and for patients with uHCC in Japan. The approval of LENVIMA was based on results of the Phase 3 REFLECT trial which evaluated the efficacy and safety of LENVIMA versus sorafenib for the first-line treatment of patients with uHCC.In the U.S., LENVIMA plus KEYTRUDA is approved for the treatment of patients with advanced endometrial carcinoma that is not microsatellite instability-high or mismatch repair deficient, who have disease progression following prior systemic therapy in any setting and are not candidates for curative surgery or radiation and for adult patients with advanced renal cell carcinoma (RCC) in the first-line setting. In Europe, LENVIMA (marketed as KISPLYX for RCC in the EU) plus KEYTRUDA is approved for adult patients with advanced or recurrent endometrial carcinoma who have disease progression on or following prior treatment with a platinum containing therapy in any setting and are not candidates for curative surgery or radiation and for adults with advanced RCC in the first-line setting. The LENVIMA plus KEYTRUDA combination is also approved in Japan for patients with radically unresectable or metastatic RCC and patients with unresectable, advanced or recurrent endometrial carcinoma that progressed after cancer chemotherapy. Results from the LEAP-002 trial do not affect the current approved indications for the LENVIMA and KEYTRUDA combination.Eisai and Merck & Co., Inc., Rahway, NJ, USA are studying the LENVIMA plus KEYTRUDA combination through the LEAP (LEnvatinib And Pembrolizumab) clinical program in more than 10 different tumor types (endometrial carcinoma, hepatocellular carcinoma, melanoma, non-small cell lung cancer, renal cell carcinoma, head and neck cancer, biliary tract cancer, colorectal cancer, gastric cancer, esophageal cancer, glioblastoma and pancreatic cancer) across more than 15 clinical trials.For more information, visit www.eisai.com/news/2022/pdf/enews202259pdf.pdf. Copyright 2022 JCN Newswire. All rights reserved. (via SEAPRWire)
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