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Objective. To provide estimates of patients with rheumatoid arthritis (RA) eligible for biotechnological therapy and to evaluate their healthcare costs. Method. An observational analysis was performed based on data-linkage between administrative databases of selected Italian Regional/Local healthcare departments. Data were then re-proportioned to the Italian population. Patients with RA diagnosis defined by discharge diagnosis and/or exemption code during 01/01/2013- 31/12/2017 were included. The criteria applied to evaluate the elegibility for biotechnological therapy were: 1) methotrexate (MTX)-treatment failure ≥6 months and start of a different conventional-synthetic diseasemodifying antirheumatic drugs (csDMARD); 2) corticosteroid ≥6 months with dosage ≥7.5 mg/die; 3) MTX-contraindication (therapy or hospitalization for renal damage/interstizial lung disease/hepatic failure). Mean annual costs per patient included drugs, hospitalizations, outpatient services. Results. Data re-proportioned to the Italian population estimated 318,328 RA patients: 43,361 with, 274,967 without biotechnological agents. Among the latter, 26,487(9.6%) patients met ≥1 criteria applied for eligibility: 1,896 had MTX-treatment failure and started another csDMARD; 15,833 received corticosteroid ≥7.5 mg/die; 7,788 had MTX-contraindication. Regarding patients fulfilling two criteria, 107 had MTX-treatment failure followed by another csDMARDs and corticosteroid ≥7.5 mg/die, 53 were treated with another csDMARDs after MTX-treatment failure and also presented MTX-contraindication, 810 had corticosteroid ≥7.5 mg/die and MTX-contraindication. Mean total annual costs for patients estimated eligible for biotechnological therapy was € 3,132, of which € 177 related to drugs indicated for RA and € 2,955 related to other direct costs. Conclusions. According to our estimates, around 10% RA patients not currently treated with biotechnological agents are eligible for such therapies, highlighting a trend of under-use in clinical practice for RA management.

Objective: To develop a set of national evidence-based recommendations for the use of Methotrexate (MTX) in daily clinical practice. Methods: A panel of 37 Italian Rheumatologists reviewed 10 international recommendations formulated during the “3E (Evidence, Expertise, Exchange) initiative” for the year 2007-8, following a systematic literature search in Medline, Embase, Cochrane Library, and 2005-7 American College of Rheumatology/European League Against Rheumatism meeting abstracts and the revision of selected papers and the appraisal of Oxford levels of evidence. Moreover, the same panel by the same methodology formulated further 5 recommendations on topics previously selected by Italian representatives to 3E initiative. The agreement about the set of proposed recommendations was stated by a consensus process and the potential impact on clinical practice was assessed. Results: International Recommendations were analysed and changed when appropriate. In addition, 5 national recommendations were developed by identifying 6371 references, selecting and evaluating the 29 ones satisfying Evidence Based Medicine principles. Conclusions: A set of 15 national recommendations for the use of MTX in daily clinical practice was developed. These recommendations are evidence-based and integrate the expertise of a large panel of Italian rheumatologists.

Objectives: To study –238 and +489 TNF-α polymorphisms in severe-unresponsive (more than 6 swollen joints and still active disease despite at least 6 months of DMARDs combination therapy) and mild-responsive (less than 3 swollen joints and good response to MTX or other conventional DMARDs) rheumatoid arthritis (RA). Methods: We investigated 100 RA patients (56 with severe and 44 with mild disease activity) and 45 healthy blood donors (HBDs). Genotyping was performed by PCR-restriction fragment lenght polymorphism procedure. Several clinical and serological parameters were also examined. Results: Severe RA patients disclosed the –238 GG genotype in 100% of the cases versus 95.5% in the mild-responsive patients and 91.2% in the HBDs. The +489 GG genotype disclosed only a trend towards a prevalence in severe RA patients. However the +489 A allele seems to associates with early onset, longer disease duration and longer responsiveness to conventional therapy. Conclusion: The -238 AG genotype is absent in severe-unresponsive RA, but present in mild-responsive RA subjects. Thus –238 GG homozygosity associates with severity and unresponsiveness. In contrast the +489 polymorphism does not segregate differently between responsive and unresponsive RA patients.