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Background: Psoriatic arthritis (PsA) phenotypes show different responses to the many available drugs. For a tailored medicine, it is important to choose the most effective treatment according to patients' characteristics. Apremilast is recommended in PsA with moderate activity. In clinical practice, the most suitable PsA patients for apremilast are those affected by the peripheral oligo-articular arthritis. However, it is not so straightforward to definitely identify this phenotype. Musculoskeletal ultrasound (MUS) is a good tool for detecting the joints actually involved by PsA. The aim of this study is to verify if MUS assessment is useful in selecting the best PsA responders to apremilast., Methods: The following data of all consecutive PsA patients from 15 centres were recorded: anamnestic data, disease activity, PsA phenotype, apremilast treatment duration and reason of suspension. MUS assessment before apremilast treatment was the criteria which clustered patients in two groups. Apremilast retention rate estimate the drug's effectiveness. The Cox analysis revealed the risk factors associated with treatment persistence. Mann-Whitney U and Chi-squared tests assessed the intergroup differences., Results: Only 40% of 356 patients (M:F: 152/204; median age 60 yrs) received MUS examination. In MUS group the moderate disease (median DAPSA 22.9 vs 26.9; p=0.0006) and the oligo-articular phenotype (63.6% vs 36.1%, p<0.0001) were more common. The retention rate was higher in MUS group (HR 0.55 IC95% 0.32-0.94; p=0.03)., Conclusion: In apremilast treated PsA patients, baseline MUS assessment is related to an increased retention rate. MUS may identify patients' characteristics favourable to apremilast response., Competing Interests: A Ariani has received honoraria as a speaker and an advisory board member of Amgen, Bristol-Myers Squibb, Boeringher, Bruno Farmaceutici, Janssen, Lilly, Novartis, Novo Nordisk, Sanofi, and Zentiva. F Lumetti has received honoraria as an advisory board member of Amgen. None of the other authors have any potential conflicts of interest to disclose in relation to this work., (© The Author(s).)

Background and Objectives: The treatment landscape for Rheumatoid Arthritis (RA) has evolved significantly with the introduction of Janus kinase inhibitors (JAKi), such as Tofacitinib (TOFA), which offer a new therapeutic option for patients who have failed or are intolerant to conventional synthetic disease-modifying antirheumatic drugs (csDMARDs). Safety concerns, particularly related to cardiovascular and cancer risks, prompted a need for additional investigation in real-world clinical settings. This study aimed to evaluate the long-term effectiveness and predictors of response to TOFA in two subpopulations of RA patients, categorized by differing cardiovascular risk profiles. Materials and Methods: This was a retrospective, multicenter observational study conducted as part of the BIRRA project, involving 23 Italian rheumatological referral centers. A total of 213 patients diagnosed with RA and treated with TOFA were included, with data collected on baseline demographics, clinical history, disease activity, and comorbidities. Patients were divided into high-risk and low-risk cardiovascular groups based on age (≥65 years) and the presence of at least one cardiovascular risk factor. Disease activity was assessed at baseline, 6 months, and 12 months using DAS28-ESR and DAS28-CRP. Treatment response was evaluated using intention-to-treat (ITT) and per-protocol (PP) approaches. Predictors of low disease activity (LDA) and remission were assessed through logistic regression, and clustering analyses were used to identify subgroups of patients with different therapeutic responses. Results: The study included 213 patients, with 129 classified as high-risk. For the overall cohort, patients achieving LDA and remission at 6 months were 20% and 12%, respectively, for the ITT analysis, and 29% and 14% for the PP analysis. At 12 months, 26% of patients reached LDA, and 17% achieved remission according to ITT, while for the PP analysis, these rates were 30% and 19%, respectively. No significant differences in remission or LDA rates were observed between the high-risk and low-risk groups. In the high-risk subgroup, 17% of patients reached LDA and 9% achieved remission at 6 months (ITT analysis), while these rates increased to 22% and 13%, respectively, in the PP analysis. At 12 months, 22% achieved LDA and 13% achieved remission in the ITT analysis, while 28% and 17% did so in the PP analysis. The reduction in DAS28-ESR and DAS28-CRP scores was significant ( p < 0.001) across all time points for both high-risk and low-risk patients. Logistic regression analyses revealed that none of the baseline characteristics-including age, sex, comorbidities, rheumatoid factor, anti-citrullinated protein antibody (ACPA) positivity, initial disease severity, or treatment history-were significant predictors of remission or LDA at 6 or 12 months. The clustering analysis suggested that older patients, particularly those with worse baseline DAS28 scores, tended to show a less favorable response to treatment, potentially indicating impacts of age-related factors such as immunosenescence on therapeutic outcomes. Conclusions: Tofacitinib demonstrated similar effectiveness in both high- and low-risk cardiovascular subgroups of RA patients, with significant reductions in disease activity observed at both 6 and 12 months. Despite safety concerns related to cardiovascular risk, TOFA remained an effective treatment option across patient subgroups, with no significant differences in remission or LDA rates based on cardiovascular risk profiles. Age appeared to negatively impact treatment response, highlighting the role of immunosenescence in RA management. These findings support the use of TOFA as a personalized therapeutic option for RA, emphasizing the need for careful evaluation of cardiovascular and age-related risks in clinical decision-making.

Background: Upadacitinib (UPA) is a selective, reversible Janus kinase inhibitor (JAKi) approved for the treatment of RA. However, there is still no solid evidence on the long-term efficacy of UPA in treated patients. The purpose of this study was to determine the efficacy of UPA to obtain remission or low disease activity (LDA) in a series of UPA patients in patients with RA after 6 and 12 months of treatment in a real-world setting., Methods: A series of 111 consecutive patients treated with UPA in 23 rheumatology centers were enrolled. Personal history, treatment history and disease activity at baseline, after 6 and 12 months were recorded. Intention-to-treat (ITT) and per-protocol (PP) analyses assessed achievement of remission or LDA or defined as DAS28 <2.6 and ≤3.2, respectively. Logistic regression analysis examined the role of several independent factors on the reduction of disease activity after 6 months of treatment., Results: Of the initial group of 111 subjects at baseline, 86 and 29 participants completed clinical assessments at 6 and 12 months. According to ITT analysis, the rates of remission and LDA were 18% and 18% at 6 months and 31.5% and 12.5% at 12 months, respectively. PP analysis showed higher rates of remission and LDA at 6 (23.3% and 19.8%) and 12 months (55.2% and 20.7%). Results of multivariate logistic regression analysis indicated that a low DAS28 score (P=0.045) was the only predictor of achieving remission at 6 months. None of the baseline factors predicted remission/LDA at 6 months., Conclusions: RA patients treated with UPA achieved a significant rate of disease remission or LDA in a real-world setting. The 6-month response was found to depend only on the baseline value of DAS28, while it was not influenced by other factors such as disease duration, line of treatment or concomitant therapy with conventional synthetic disease-modifying antirheumatic drugs (csDMARDs) or corticosteroids.

Background/Objectives: The Janus kinase inhibitors (JAKi) tofacitinib (TOFA), baricitinib (BARI), upadacitinib (UPA), and filgotinib (FILGO) are effective drugs for the treatment of rheumatoid arthritis. However, the US Food and Drug Administration (FDA) raised concerns about the safety of TOFA after its approval. This prompted the European Medicines Agency (EMA) to issue two safety warnings for limiting TOFA use, then extended a third warning to all JAKi in patients at high risk of developing serious adverse effects (SAE). These include thrombosis, major adverse cardiac events (MACE), and cancer. The purpose of this work was to analyze how the first two safety warnings from the EMA affected the prescribing of JAKi by rheumatologists in Italy. Methods: All patients with rheumatoid arthritis who had been prescribed JAKi for the first time in a 36-month period from 1 July 2019, to 30 June 2022 were considered. Data were obtained from the medical records of 29 Italian tertiary referral rheumatology centers. Patients were divided into three groups of 4 months each, depending on whether the JAKi prescription had occurred before the EMA's first safety alert (1 July-31 October 2019, Group 1), between the first and second alerts (1 November 2019-29 February 2020, Group 2), or between the second and third alerts (1 March 2021-30 June 2021, Group 3). The percentages and absolute changes in the patients prescribed the individual JAKi were analyzed. Differences among the three groups of patients regarding demographic and clinical characteristics were also assessed. Results: A total of 864 patients were prescribed a JAKi during the entire period considered. Of these, 343 were identified in Group 1, 233 in Group 2, and 288 in Group 3. An absolute reduction of 32% was observed in the number of patients prescribed a JAKi between Group 1 and Group 2 and 16% between Group 1 and Group 3. In contrast, there was a 19% increase in the prescription of a JAKi in patients between Group 2 and Group 3. In the first group, BARI was the most prescribed drug (227 prescriptions, 66.2% of the total), followed by TOFA (115, 33.5%) and UPA (1, 0.3%). In the second group, the most prescribed JAKi was BARI (147, 63.1%), followed by TOFA (65, 27.9%) and UPA (33, 11.5%). In the third group, BARI was still the most prescribed JAKi (104 prescriptions, 36.1%), followed by UPA (89, 30.9%), FILGO (89, 21.5%), and TOFA (33, 11.5%). The number of patients prescribed TOFA decreased significantly between Group 1 and Group 2 and between Group 2 and Group 3 ( p ˂ 0.01). The number of patients who were prescribed BARI decreased significantly between Group 1 and Group 2 and between Group 2 and Group 3 ( p ˂ 0.01). In contrast, the number of patients prescribed UPA increased between Group 2 and Group 3 ( p ˂ 0.01). Conclusions : These data suggest that the warnings issued for TOFA were followed by a reduction in total JAKi prescriptions. However, the more selective JAKi (UPA and FILGO) were perceived by prescribers as favorable in terms of the risk/benefit ratio, and their use gradually increased at the expense of the other molecules.

Objectives: The aim of this study was to explore the link between specific sonographic findings and Leeds Dactylitis Index basic (LDI-b) score in psoriatic arthritis (PsA) patients with hand dactylitis., Methods: Ninety-one hand dactylitis were evaluated in a multicentre study for the presence of pain, functional limitation and tenderness (2-point scale) and LDI-b score. Dactylitic fingers were investigated using high-frequency US in grey scale (GS) and power Doppler (PD). According to median LDI-b score value of 12, fingers were then divided into two groups and categorised into quartiles on the basis of the value of ratio of circumference., Results: Dactylitic fingers with a LDI-b score >12 showed a significantly higher prevalence of GS flexor tenosynovitis (p=0.015), PD flexor tenosynovitis (p=0.001) and soft tissue oedema (p=0.004), when compared with those with those with LDI-b score <12. GS synovitis at proximal interphalangeal (PIP) level (p=0.003) showed more frequent in dactylitic fingers with a LDI-b score <12, than those with a higher LDI-b value. Fingers in the fourth quartile showed a significantly higher prevalence of GS flexor tenosynovitis of grade ≥2 (p=0.046) and joint synovitis of grade ≥2 at PIP level (p=0.028)., Conclusions: We found that high values of LDI are associated with US flexor tenosynovitis and soft tissue oedema in PsA dactylitis. Results suggest a potential role of PIP joint synovitis in the genesis of hand digital swelling and of extra-articular structures alterations in determining the LDI score.

Objectives: To describe the baseline characteristics of the patients enrolled in the QUality of life in patients with Axial SpondyloARthritis (QUASAR) study in terms of quality of life (QoL), disease activity, therapy adherence, and work ability in a real-world setting., Methods: QUASAR is an Italian multicentre, prospective 12-month observational study, including consecutive adult patients classified as axial spondyloarthritis (axSpA) according to the Assessment of SpondyloArthritis international Society criteria for axSpA., Results: Of 512 patients enrolled in 23 rheumatology centres, 80.7% had ankylosing spondylitis (AS) and 19.3% had non-radiographic axSpA (nr-axSpA). Mean ages were 34.1±13.3 years at axSpA symptoms onset and 39.5±13.0 years at diagnosis. Of the patients, 51.4% presented with ≥1 extra articular manifestation (EAM); the most common were psoriasis (17.8%) and uveitis (16.4%). Patients with nr-axSpA and AS had similar EAM rates, disease activity, and QoL. Biologic disease-modifying anti-rheumatic drugs (bDMARDs; 83.2%) were the most commonly received medication, followed by conventional synthetic DMARDs (22.9%) and non-steroidal anti-inflammatory drugs (NSAIDs; 16.6%). At baseline, higher treatment satisfaction was reported with bDMARDs which, together with NSAIDs, were associated with the best overall scores for disease activity, function, and QoL in the overall population and AS subgroup., Conclusions: QUASAR is the first Italian prospective study that comprehensively evaluated a large axSpA patient sample in a real-world setting. This interim analysis at baseline confirmed that i) patients with AS and nr-axSpA have similar QoL and disease burden, ii) nearly all axSpA patients receive treatment, and iii) bDMARDs and NSAIDs, overall, yield better disease activity and QoL.

Objectives: To determine whether a detailed sonographic evaluation of the hand flexor tendon compartment could help differentiate between psoriatic arthritis (PsA) and rheumatoid arthritis (RA)., Methods: Thirty-seven patients with PsA, 47 with RA and 10 healthy controls (HC) had flexor tendon (FT) compartment imaging of the dominant hand 2nd to 4th tendons using grey scale (GS) and power Doppler (PD) ultrasound (US) with evaluation for tenosynovitis, peri-tendinous lesions, soft tissue oedema and bony changes at FT insertions. 24/37 PsA and 19/47 RA cases had morning stiffness and 19/37 PsA and 10/47 RA had swollen and/or tender fingers., Results: Tenosynovitis was more common in PsA (25/37) despite higher DAS28 scores in RA (25/37 versus 10/45; p<0.001). Peri-tendinous dermal soft tissue oedema with associated PD signal was evident in one third of PsA patients but in no RA patients (p=0.003). Flexor tendon enthesopathy including new bone formation at the insertional site was significantly more common in PsA (p=0.001). Considering a total inflammatory score per patient summing up the three modifications of the flexor tendon (tenosynovitis, peri-tendinous oedema and insertional enthesophytes) the difference between PsA and RA remained statistically significant (p<0.001)., Conclusions: Our study adds to the growing body of literature that high resolution US of the hand FT compartment may help differentiate between RA and PsA, which needs assessment in the diagnostic setting.