Remission, low disease activity and improvement of pain and function in psoriatic arthritis patients treated with IL-12/23 and IL-17 inhibitors. A multicenter prospective study.

The development of new biologic and targeted synthetic DMARDs can lead to good disease control. The aim of the present study was to assess the rate of remission and low disease activity, and the improvement of pain and function, in psoriatic arthritis (PsA) patients treated with new anti-IL-12/23 and anti-IL-17 biologic agents. A prospective 6-month study was performed. Patients fulfilling the CASPAR criteria for PsA that started ustekinumab, secukinumab and ixekizumab were enrolled and prospectively followed in a setting of clinical practice. Patients were considered in minimal disease activity (MDA), when they met at least 5/7 of the criteria previously defined. DAPSA score ≤4 was also evaluated as a remission criterion. Pain on VAS, PtGA and HAQ were also assessed in all patients. Patients achieving MDA were compared to non-MDA to identify outcome predictive factors. Of the 70 patients treated with ustekinumab, secukinumab and ixekizumab, at baseline, no patients were in MDA or had a DAPSA score ≤4. Ten patients (14.2%) were lost during the follow-up. After 6 months, MDA was achieved in 22 (31.4%) patients. DAPSA≤4 was achieved in 17 (24.2%) patients. Significant improvement in pain, PtGA and HAQ was also found. Patients naïve to anti-TNF treatment achieved more frequently MDA compared to anti-TNF-experienced patients. Male sex, high levels of CRP and absence of comorbidities were found to be predictors of MDA. In our prospective observational study, MDA was achieved in 31.4% and DAPSA remission in 24.2% of patients treated with inhibitors of IL-12/23 and IL-17, thus making this target achievable in PsA patients treated with these drugs.