Journal
JOURNAL OF MEDICAL ECONOMICS
Volume 26, Issue 1, Pages 11-18Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/13696998.2022.2151270
Keywords
Cost-consequence model; disease-modifying therapies; ofatumumab; relapsing multiple sclerosis; societal perspective; Spain
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This study evaluated the impact of early vs delayed ofatumumab initiation and the long-term clinical, societal, and economic outcomes of ofatumumab vs teriflunomide in RMS patients. The results suggest that early initiation of ofatumumab is an effective and cost-saving strategy for improving outcomes in RMS patients. Furthermore, patients receiving ofatumumab for 10 years are projected to have comparatively better outcomes than those receiving teriflunomide.
PLAIN LANGUAGE SUMMARY The therapeutic benefits of ofatumumab in relapsing multiple sclerosis (RMS) patients have been reported in the ASCLEPIOS I and II trials. Using an Expanded Disability Status Scale-based Markov model, this study aimed to assess the impact of early (i.e. at first-line, as the first treatment after diagnosis) vs delayed (i.e. 3-year delay) ofatumumab initiation in RMS patients from a Spanish societal perspective. In addition, the long-term clinical, societal, and economic outcomes of ofatumumab vs teriflunomide treatment were assessed. Evidence from this study suggests that early initiation of a high-efficacy therapy such as ofatumumab, compared with its delayed initiation, is an effective and cost-saving strategy for improving outcomes in RMS patients. Furthermore, patients receiving ofatumumab for 10 years are projected to experience comparatively better outcomes (clinical, societal, and economic) than those receiving teriflunomide. Objectives To evaluate the impact of early (at first-line) vs delayed (3-year delay) ofatumumab initiation and long-term clinical, societal, and economic outcomes of ofatumumab vs teriflunomide in relapsing multiple sclerosis (RMS) patients from a Spanish societal perspective. Methods A cost-consequence analysis was conducted using an Expanded Disability Status Scale (EDSS)-based Markov model. Inputs were sourced from ASCLEPIOS I and II trials and published literature. Results At the end of 10 years, compared with first-line teriflunomide treatment, early first-line ofatumumab initiation was projected to result in 35.6% fewer patients progressing to EDSS >= 7 and 27.8% fewer relapses. The ofatumumab cohort required 7.3% reduced informal care time and had 19% fewer disability-adjusted life years (DALYs) than the teriflunomide cohort. A 3-year delay in ofatumumab treatment (3-year teriflunomide + 7-year ofatumumab) was projected to result in 32.2% more patients progressing to EDSS >= 7, 20.2% more relapses, 5.4% increased informal care time, and 16.6% more DALYs compared with early ofatumumab initiation. Early ofatumumab initiation was associated with total annual cost savings (excluding disease-modifying-therapies' acquisition costs) of euro35,328 ($34,549; conversion factor 1euro= $1.02255) and euro24,373 ($23,836) per patient vs teriflunomide and 3-year delayed ofatumumab initiation, respectively. Conclusions This study highlights the benefits of early initiation of high-efficacy therapy such as ofatumumab vs its delayed initiation for improving the outcomes in RMS patients (having characteristics similar to those of patients included in the ASCLEPIOS trials). Ofatumumab treatment was projected to provide improved long-term clinical, societal, and economic outcomes vs teriflunomide treatment in RMS patients from a Spanish societal perspective.
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