GSK’s CAR-T rival Blenrep fails multiple myeloma trial, endangering its accelerated approval

Title: Setback for GSK’s CAR-T Rival: Blenrep’s Multiple Myeloma Trial Failure Jeopardizes Accelerated Approval


In the competitive field of cancer therapies, chimeric antigen receptor T-cell (CAR-T) treatments have emerged as groundbreaking options, offering hope to patients with limited treatment options. GlaxoSmithKline (GSK) developed Blenrep, a potential CAR-T rival, to combat multiple myeloma. However, a recent trial failure has put its accelerated approval at risk. In this blog, we will delve into the key points surrounding Blenrep’s setback and its impact on the future of multiple myeloma treatment.

Key Points:

  1. Understanding Multiple Myeloma and the Need for Effective Treatments:
    Multiple myeloma is a cancer of the plasma cells, primarily affecting bone marrow and compromising the immune system. It can lead to skeletal issues, organ damage, and other complications. Due to the complexity and variability of the disease, there is an urgent need for innovative therapies to improve patient outcomes.
  2. Introduction of Blenrep as a CAR-T Rival:
    Blenrep, developed by GSK, is a CAR-T therapy that aims to target B-cell maturation antigen (BCMA), a protein found on the surface of myeloma cells. By redirecting and enhancing the patient’s immune system, Blenrep seeks to eliminate cancerous cells and potentially prolong survival rates in multiple myeloma patients.
  3. The Significance of Clinical Trial Failures:
    The failure of Blenrep in a multiple myeloma clinical trial is a significant setback, as clinical trials serve as the foundation for drug approval. Failed trials can lead to delayed or revoked approvals, impacting the availability and accessibility of potential treatment options for patients.
  4. Implications for Accelerated Approval:
    Accelerated approval pathways expedite the process of making novel therapies available to patients with unmet medical needs. Blenrep had previously received accelerated approval based on promising early-stage results. However, the recent trial failure raises doubts about its continued approval under this pathway, potentially delaying its accessibility to patients.
  5. Evaluating Trial Failure Reasons:
    Understanding the reasons behind Blenrep’s trial failure is crucial to assess its future prospects. Factors such as insufficient efficacy, safety concerns, high discontinuation rates, or unforeseen risks may have contributed to the unfavorable outcome. In-depth analysis and further investigation are necessary to determine the specific reasons behind the trial failure.
  6. Impact on Multiple Myeloma Treatment Landscape:
    The disappointment surrounding Blenrep’s trial failure sheds light on the challenges and uncertainties faced by researchers and pharmaceutical companies in developing effective treatments for multiple myeloma. It highlights the need for continued research and innovation to address the complexities of the disease and improve patient outcomes.
  7. Future Perspectives and Alternatives:
    While the failure of Blenrep is disheartening, it serves as a catalyst for renewed efforts in the development of effective multiple myeloma treatments. Researchers and pharmaceutical companies may shift their focus towards exploring alternative therapeutic approaches, combination therapies, or improving existing treatment options to fill the gap left by Blenrep’s setback.


The recent failure of GSK’s CAR-T rival, Blenrep, in a multiple myeloma trial is a significant setback for the development of effective treatments in this challenging disease space. The potential loss of its accelerated approval jeopardizes its accessibility to patients in need. This event underscores the importance of robust clinical trials and thorough evaluation to ensure the efficacy and safety of novel therapies. Moving forward, the setback of Blenrep serves as a reminder of both the complexities involved in developing therapies for multiple myeloma and the necessity for continued research and innovation to improve patient outcomes in this devastating disease.