BACKGROUND: Golimumab is a novel TNF-α inhibitor licensed to treat patients with active PsA. Although its clinical efficacy has been proven in clinical trials, its cost effectiveness is yet to be established. OBJECTIVES: To estimate the cost effectiveness of golimumab among patients with active PsA from the UK NHS perspective. METHODS: A decision analytic model was used to simulate progression of a hypothetical cohort of active PsA patients on golimumab and other TNF-α inhibitors as well as palliative care. The clinical evidence was derived from clinical trials of TNF-α inhibitors and compared using mixed treatment models. The primary outcome measure was quality-adjusted life years (QALYs) estimated based on change in Health Assessment Questionnaire (HAQ) and Psoriasis Area Severity Index (PASI) from baseline. The annual acquisition cost of golimumab was assumed to be identical to annual cost of other subcutaneous TNF-α inhibitors. The resource use costs and outcomes were discounted at 3.5% over a period of 40 years. The uncertainty surrounding important variables was further explored using probabilistic sensitivity analyses (PSA). RESULTS: TNF-α inhibitors were significantly superior to palliative care but comparable to each other on Psoriatic Arthritis Response Criteria (PsARC), HAQ and PASI response. The incremental cost effectiveness ratio (ICERs) for golimumab compared to palliative care was £16,811 for PsA patients and £16,245 for a subgroup of PsA patients with significant psoriasis. At an acceptability threshold of £30,000 per QALY, the probability of golimumab being cost effective is 89%. CONCLUSION: Once monthly, golimumab is a cost-effective treatment alternative for patients with active PsA. With its patient-focussed attributes, golimumab is likely to offer additional choice in PsA treatment.
BACKGROUND:Golimumab is a novel TNF-α inhibitor licensed to treat patients with active PsA. Although its clinical efficacy has been proven in clinical trials, its cost effectiveness is yet to be established. OBJECTIVES: To estimate the cost effectiveness of golimumab among patients with active PsA from the UK NHS perspective. METHODS: A decision analytic model was used to simulate progression of a hypothetical cohort of active PsA patients on golimumab and other TNF-α inhibitors as well as palliative care. The clinical evidence was derived from clinical trials of TNF-α inhibitors and compared using mixed treatment models. The primary outcome measure was quality-adjusted life years (QALYs) estimated based on change in Health Assessment Questionnaire (HAQ) and Psoriasis Area Severity Index (PASI) from baseline. The annual acquisition cost of golimumab was assumed to be identical to annual cost of other subcutaneous TNF-α inhibitors. The resource use costs and outcomes were discounted at 3.5% over a period of 40 years. The uncertainty surrounding important variables was further explored using probabilistic sensitivity analyses (PSA). RESULTS: TNF-α inhibitors were significantly superior to palliative care but comparable to each other on Psoriatic Arthritis Response Criteria (PsARC), HAQ and PASI response. The incremental cost effectiveness ratio (ICERs) for golimumab compared to palliative care was £16,811 for PsA patients and £16,245 for a subgroup of PsA patients with significant psoriasis. At an acceptability threshold of £30,000 per QALY, the probability of golimumab being cost effective is 89%. CONCLUSION: Once monthly, golimumab is a cost-effective treatment alternative for patients with active PsA. With its patient-focussed attributes, golimumab is likely to offer additional choice in PsA treatment.
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