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  • Merck discontinues...

Merck discontinues Vibostolimab, Pembrolizumab coformulation arm of Phase 3 KeyVibe-010 trial in Melanoma

Written By : Ruchika Sharma |Medically Reviewed By : Dr. Kamal Kant Kohli Published On 2024-05-14T16:17:35+05:30  |  Updated On 14 May 2024 4:17 PM IST
Merck bags USFDA nod for Welireg for 12 years and older with pheochromocytoma or paraganglioma
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Rahway: Merck, known as MSD outside of the United States and Canada, has announced the discontinuation of the vibostolimab and pembrolizumab coformulation arm of the Phase 3 KeyVibe-010 trial. The trial is evaluating the investigational coformulation of vibostolimab, an anti-TIGIT antibody, and pembrolizumab (KEYTRUDA), Merck’s anti-PD-1 therapy, compared to KEYTRUDA alone, as adjuvant treatment for patients with resected high-risk melanoma (Stage IIB-IV).

At a pre-planned analysis, data showed that the primary endpoint of recurrence-free survival (RFS) met the pre-specified futility criteria. A higher rate of discontinuation of all adjuvant therapy by patients in the coformulation arm versus the KEYTRUDA-only arm, primarily due to immune-mediated adverse experiences, rendered it highly unlikely that the trial could achieve a statistically significant improvement in RFS. Based on the recommendation of an independent Data Monitoring Committee (DMC), Merck is unblinding the study and recommends that patients receiving the vibostolimab and pembrolizumab coformulation be offered the option to be treated with KEYTRUDA monotherapy. Data analysis from this study is ongoing. Results will be shared with the scientific community and communicated to regulatory agencies.

“Through our clinical development program, we continue to ask the tough questions in an effort to fully explore the potential of novel coformulations and combinations that build on the foundation of KEYTRUDA, with a goal to improve upon current standards of care and help even more patients with cancer,” said Dr. Marjorie Green, senior vice president and head of oncology, global clinical development, Merck Research Laboratories. “We are grateful to the patients and investigators for their participation and will leverage insights from this trial as we rapidly advance our diverse pipeline of novel mechanisms, including further study of this coformulation in lung cancer.”

"Merck is committed to the development of new treatment options for patients with melanoma, including in earlier stages of disease, which build upon the current standard of care. The program includes the ongoing Phase 3 V940-001 study, in collaboration with Moderna, evaluating V940 (mRNA-4157), an investigational individualized neoantigen therapy (INT), in combination with KEYTRUDA as adjuvant treatment in patients with resected high-risk (Stage IIB-IV) melanoma," the release stated.

In the U.S., KEYTRUDA has two approved indications in melanoma: for the treatment of patients with unresectable or metastatic melanoma, and for the adjuvant treatment of adult and pediatric (12 years and older) patients with stage IIB, IIC, or III melanoma following complete resection.

Vibostolimab is Merck’s investigational anti-TIGIT antibody that 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. Merck has an extensive clinical development program evaluating the safety and efficacy of the vibostolimab and pembrolizumab coformulation alone and in combination with other agents in over 3,000 patients.

Ongoing Phase 3 studies evaluating the vibostolimab and pembrolizumab coformulation in lung cancer, which are routinely monitored by external data monitoring committees, include KeyVibe-003, KeyVibe-006, KeyVibe-007 and KeyVibe-008. Interim external data monitoring committee safety reviews have not resulted in any safety-related study modifications to date. No changes to these studies are anticipated based on the KeyVibe-010 findings.

Read also: Phase 3 trial evaluating Keytruda in endometrial cancer misses primary survival endpoint: Merck

meckmerck newsvibostolimabpembrolizumabkeytrudamelanomaskin cancer
Ruchika Sharma
Ruchika Sharma

    Ruchika Sharma joined Medical Dialogue as an Correspondent for the Business Section in 2019. She covers all the updates in the Pharmaceutical field, Policy, Insurance, Business Healthcare, Medical News, Health News, Pharma News, Healthcare and Investment. She has completed her B.Com from Delhi University and then pursued postgraduation in M.Com. She can be contacted at editorial@medicaldialogues.in Contact no. 011-43720751

    Dr. Kamal Kant Kohli
    Dr. Kamal Kant Kohli

    Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

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