Analysis of prescriptive monitoring regarding the current therapeutic landscape of rheumatoid arthritis: the experience of an Italian local health authority.

Introduction: Rheumatoid Arthritis (RA) is among the most prevalent chronic inflammatory diseases affecting millions of people with a significant expenditure of resources by National Healthcare Systems. This study aimed to analyze all available treatments exclusively for RA to highlight the costs of each treatment type and raise awareness of the use of biosimilar drugs.

Methods: In an Italian healthcare authority, all prescriptions made for the diagnosis of RA were extracted to verify consumption expressed in Defined Daily Dose (DDD) and the expenditure incurred expressed in euros. Consequently, a grouping into three major drug categories has been performed: anti - tumor necrosis factor alpha agents (TNFα), other injectable formulations, and novel oral formulations.

Results: Prescriptions for the second half-year 2022 and 2023 have been analyzed, with a total cost of almost 7 million euros in the sample considered. All pharmaceutical categories showed an increase in consumption, but only anti- TNFα recorded a decrease in costs from 25% in 2022 to 22% in 2023, thanks to the lower cost of the biosimilar drug.

Conclusion: The costs of RA may represent a significant spending commitment for central governments. As a result, actions are needed to encourage the preferential use of biosimilar drugs.