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The role of belantamab mafodotin for patients with relapsed and/or refractory multiple myeloma.

ABSTRACT: Belantamab mafodotin (belamaf) is a first-in-class anti-B-cell maturation antigen (BCMA) antibody-drug conjugate (ADC) that recently gained regulatory approval for the treatment of relapsed and/or refractory multiple myeloma (RRMM) patients who have received at least four prior therapies including an anti-CD38 monoclonal antibody (mAb), a proteasome inhibitor (PI), and an immunomodulatory drug (IMiD). As the first BCMA-targeted therapy to be approved in multiple myeloma along with its "off-the-shelf" outpatient administration, belamaf addresses a significant unmet need in RRMM that is refractory to IMiD, PI, and anti-CD38 mAb therapy, otherwise known as triple-class refractory myeloma. Belamaf is also associated with frequent corneal ocular adverse events, which represents a unique toxicity in multiple myeloma therapeutics, and its administration requires a multidisciplinary approach with oncologists and eye care specialists to safely and effectively manage patients on belamaf therapy. In this review, we discuss the preclinical and clinical data leading to the regulatory approval of belamaf, the monitoring and mitigation strategies of corneal ocular adverse events, and its current and future role in the RRMM treatment landscape.

SUBMITTER: Becnel MR

PROVIDER: S-EPMC7739070 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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The role of belantamab mafodotin for patients with relapsed and/or refractory multiple myeloma.

Becnel Melody R MR Lee Hans C HC

Therapeutic advances in hematology 20201214

Belantamab mafodotin (belamaf) is a first-in-class anti-B-cell maturation antigen (BCMA) antibody-drug conjugate (ADC) that recently gained regulatory approval for the treatment of relapsed and/or refractory multiple myeloma (RRMM) patients who have received at least four prior therapies including an anti-CD38 monoclonal antibody (mAb), a proteasome inhibitor (PI), and an immunomodulatory drug (IMiD). As the first BCMA-targeted therapy to be approved in multiple myeloma along with its "off-the-s ...[more]

PMID: 33403093

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Project description:PurposeEstimate the budget impact of belantamab mafodotin (belamaf) for patients with relapsed/refractory multiple myeloma (RRMM) who have received ≥4 prior therapies, including an anti-CD38 monoclonal antibody, a proteasome inhibitor, and an immunomodulatory agent.MethodsA budget impact analysis (BIA) was developed to estimate the cost difference between current (no belamaf) and projected (with belamaf) market scenarios over 3 years. Comparators were identified from a systematic literature review and included selinexor + dexamethasone or best supportive care. The number of treatment-eligible patients were estimated using an epidemiology model. Base-case analyses were conducted from a US commercial payer perspective (cost year: 2019). Model inputs included market share estimates, treatment duration, and costs of drug acquisition/administration, concomitant medications, adverse event (AE) management, treatment monitoring, and subsequent treatments based on published literature/cost databases. Budget impact, calculated as the difference in costs between current and projected scenarios over 3 years, was reported as cost per member per month (PMPM) and per member per year (PMPY). One-way sensitivity analysis assessed which key parameters most affected model outcomes. Alternative scenarios were tested (1- or 5-year time horizon; Medicare perspective; negligible cost of mental status change AE).ResultsIn a hypothetical commercial payer health plan with 1 million members, 33 patients were identified as treatment-eligible over 3 years. Introducing belamaf for patients with RRMM resulted in an estimated budget-neutral PMPM cost of -$0.0003 and PMPY of -$0.004, based on n=9/33 patients receiving treatment. Sensitivity analyses showed that budget impact in the base case was most sensitive to changes in treatment duration and drug acquisition costs. Base-case results were consistent across all scenarios assessed.ConclusionBIA indicates that adoption of belamaf in this patient population would be budget neutral for a US health plan.

Dataset Information

The role of belantamab mafodotin for patients with relapsed and/or refractory multiple myeloma.

Publications

The role of belantamab mafodotin for patients with relapsed and/or refractory multiple myeloma.

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