Background:Evidence on the efficacy of biologics in the treatment of psoriatic arthritis (PsA) patients with axial manifestations affecting 30-70% of PsA patients is limited. Secukinumab (SEC) has provided significant and sustained improvement in the signs and symptoms of active PsA and ankylosing spondylitis.Objectives:This study aims to analyze the experience of using SEC for PsA patients with axial involvement in real-world setting.Methods:Multicentric observational, longitudinal, retrospective study conducted in a tertiary hospital between January 2016 and December 2019. Patients with PsA (CASPAR criteria) and clinical and/or image diagnosis of axial involvement receiving at least one dose of SEC were included. Patients with non-pathological sacroiliacs x-ray and MRI had to have spinal pain VAS ≥4/10 after failure to NSAIDs, prior to the onset of SEC, to be included. Medical records were reviewed to collect demographic and clinical data, features of PsA (manifestations, treatments and activity assessment). Descriptive statistics and then a comparative analysis with the Studentt-test to analyze the effectiveness of SEC were performed.Results:Of 98 PsA patients treated with SEC, 58 (59.2%) had axial involvement, of which 41 (71%) female. Mean age was 54 y.o (SD 10) and average duration of the disease was 10 years (SD 8). All 58 patients had peripheral disease (33% joint erosions), 55 (95%) had psoriasis, 20 (34%) showed dactilitis and 39 (67%) had enthesitis. Sacroiliacs x-ray was damaged in 38 (66%) patients (grade I-IV) and 23 (40%) pathological MRI, with HLAB27+ at 8 (14%) patients. Average BMI was 29 (SD 8), with an obesity rate of 33% (19 pt). Observed comorbidities were hypertension (27 pt, 47%), diabetes mellitus (6 pt, 10%), dyslipidemia (23 pt, 40%), active smoking (18 pt, 31%) and malignancy (6 pt, 10%). Regarding previous treatments, 90% had received cDMARDs, particularly methotrexate (86%) and 40 (69%) had been exposed to at least one bDMARD (15 pt to one, 9 to two, 6 to three and 10 to four or more). 7 patients were on 300 mg dose and 51 patients on 150 mg dose (dose escalation to 300 mg was performed in 16 patients and 44% respond and maintain SEC). Average drug survival time was 1.4 (SD 1) years. At 6 months of SEC therapy, tender and swollen joint count, spinal pain VAS, CRP, ASDAS-CRP and DAPSA had significantly decreased (Table 1). 29 (50%) patients suspended SEC during follow-up due to primary ineffectiveness (8), secondary ineffectiveness (16), adverse events (3), latex allergy (1) and remission (1). Adverse events do not differ from those reported in clinical trials.Table 1.Disease activity assessment at 6 months of secukinumab therapy.Baseline6 months after SECMean differenceP valueSJC4,8±5,41,9±3,1-2,8 (IC95% -3,9 a -1,7)p<0,0001TJC7,7±5,83,9±4,1-3,8 (IC95% -5,1 a -2,4)p<0,0001Spinal pVAS6,1±3,24,2±2,9-1,9 (IC95% -2,4 a -1,4)p<0,0001CRP (mg/L)7,7±9,94,9±5,9-2,9 (IC95% -4,5 a -1,2)p=0,0009ASDAS-CRP2,5±1,91,8±1,3-0,7 (IC95% -0,9 a -0,4)p<0,0001DAPSA27,7±12,116,7±10,4-11 (IC95% -15,3 a -6,8)p<0,0001SJC: swollen joint count, TJC: tender joint count, Spinal pVAS: spinal pain visual analog scale, CRP: C-reactive protein, SEC: secukinumab.Conclusion:Secukinumab in real-world setting provided improvements in the axial and peripheral manifestations of PsA, using both the 150 mg and 300 mg doses.Disclosure of Interests:MARIA MARTIN LOPEZ: None declared, Beatriz Joven-Ibáñez Speakers bureau: Abbvie, Celgene, Janssen, Merck Sharp & Dohme, Novartis, Pfizer, José Luis Pablos: None declared
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