Multicenter Study of Secukinumab Survival and Safety in Spondyloarthritis and Psoriatic Arthritis: SEcukinumab in Cantabria and ASTURias Study

Objectives: We aimed to evaluate the drug retention rate and safety of secukinumab (SEC) in patients with axial spondyloarthritis (AxSpA) and psoriatic arthritis (PsA) in a real clinical setting.

Methods: This multicenter retrospective observational study included all AxSpA and PsA patients who received at least one dose of SEC. Adverse events (AE) and the drug retention rate were the main study outcomes. Drug survival was analyzed by Kaplan-Meier curves while predictive factors of discontinuation were evaluated using a Cox regression analysis. The weight of these associations was estimated by hazard ratio (HR) values.

Results: We included 154 patients (59 PsA and 95 AxSpA). Mean disease duration was 6.5 years (IQR 2-8). Sixty-one percent of patients were treated with two or more biologics prior to SEC. The 1 and 2-year retention rates for SEC were 66 and 43%, respectively. The main causes of discontinuation were inefficacy (59%) and AE (36%). The factors associated with lower risk of discontinuation were male gender (HR 0.54, 95% CI 0.38-0.78 p = 0.001), obesity (HR 0.53, 95% CI 0.30-0.93 p = 0.027), hypertension (HR 0.55, 95% CI 0.30-0.93 p = 0.008), and diabetes (HR 0.42 95% CI 0.18-0.99 p = 0.047) while number of previous biologics and depression were predictors of discontinuation (HR 1.18, 95% CI 1.04-1.34 p = 0.011 and HR 2.53, 95% CI 1.61-3.96 p < 0.001).

Conclusions: SEC showed a good retention rate in a population previously exposed to several biological therapies. As a novelty, cardiometabolic comorbidities were associated with better drug survival.

Disease Activity in Psoriatic Arthritis Index and Psoriatic Arthritis Impact of Disease Questionnaire: correlation and sensitivity to change in a real clinical setting

OBJECTIVES

The performance of many outcome measures for psoriatic arthritis (PsA) is almost unknown in real clinical practice. Our objective was to study the correlation and sensitivity to change of the Disease Activity in Psoriatic Arthritis (DAPSA) index and the Psoriatic Arthritis Impact of Disease (PsAID) questionnaire in a real practice setting.

METHODS

This was a prospective, open, non-controlled study that included 60 consecutive patients with PsA treated with ustekinumab. Most had been previously treated with one or more biologic therapeutic agents. The correlation (Spearman's rho coefficient) and the sensitivity to change [Standardized Mean Response (SMR)] of DAPSA and PsAID were studied. Effect size values of 0.20, 0.50 and 0.80 corresponded to low, moderate and high sensitivity to change, respectively.

RESULTS

More than 70% of patients achieved therapeutic goals (21.7% were in remission and 50% in low disease activity according to DAPSA categories). Two out of three patients reached an acceptable symptomatic state (PsAID <4). The correlation between final values of both instruments was substantial (Spearman's rho: 0.62, p<0.0001). The SMR for the PsAID was 1.08 (0.95-1.21) and for DAPSA was 1.5 (1.37-1.63), both values corresponding to instruments with a high sensitivity to change (>0.80). The best PsAID cut-off value for identifying DAPSA remission was 3.32 with an area under the ROC curve of 0.82.

CONCLUSIONS

DAPSA and PsAID seem to be useful instruments for a more comprehensive assessment of PsA in daily practice. Our results can help to disseminate the use of these instruments in the clinical practice of many rheumatologists.

Performance of the ASAS Health Index for the Evaluation of Spondyloarthritis in Daily Practice

Objective

The Assessment of SpondyloArthritis international Society Health Index (ASAS HI) is a tool designed to assess disease impact in spondyloarthritis (SpA), but its clinical performance is barely known. We aimed to test the clinimetric properties of ASAS HI in a real clinical setting.

Methods

This cross-sectional study included 111 consecutive patients with SpA. The measurement properties of ASAS HI were tested against conventional assessment measures. Convergent validity was assessed by Spearman rho correlations, while discriminative validity was analyzed through receiver-operating characteristic (ROC) curves. A multivariate regression analysis was designed to identify ASAS HI items associated with active disease.

Results

The average ASAS HI was 5.4 ± 3.8 (interquartile range 3–8). ASAS HI showed high convergent validity against other SpA measures (rho ≥ 0.70, p < 0.0005). The optimal criteria for detecting high/very high disease activity Ankylosing Spondylitis Disease Activity Score (ASDAS) categories was an ASAS HI score > 6, area under the ROC curve 0.86 (95% CI 0.78–0.92), positive likelihood ratio 7.3 (95% CI 3.1–17.1), p < 0.0001. The ASAS HI items significantly associated with Bath Ankylosing Spondylitis Disease Activity Index active disease were “I often get frustrated” (OR 9.2, 95% CI 1.2–69.4, p = 0.032), and “I sleep badly at night” (OR 7.7, 95% CI 1.4–41.6, p = 0.018). As for ASDAS, it was “pain sometimes disrupts my normal activities” (OR 8.7, 95% CI 1.7–45.2, p = 0.010).

Conclusion

The ASAS HI is a useful and simple instrument for its application in daily practice. Given its good clinimetric properties, it could be used as an additional instrument to evaluate SpA.