Compares ixekizumab with methotrexate for finger swelling in psoriatic arthritis

Who can take part

• adult age (≥ 18 years); - fulfilment of CASPAR criteria for PsA [2]; - naïve to csDMARDs and/or bDMARDs;; - presence of active dactylitis, diagnosed and evaluated at each centre through physical examination

Who cannot take part

• -participation in another concurrent clinical intervention study within 30 days of randomization; - planned administration of live vaccines during the study period; - previous treatment with lymphocyte-depleting therapies or alkylating agents; - presence of one or more contraindication reported in datasheets of administered study drugs; - haemoglobin<9.0 g/dL, white-cell count<3.0×109/L, absolute neutrophil count<1.2×109/L, platelet count<100×109/L; - estimated glomerular filtration rate<40 ml/min (method of Cockcroft and Gault); - aspartate aminotransferase and/or alanine aminotransferase >1.5 times the upper normal range; - another autoimmune rheumatic disease except Sjogren’s syndrome; - recent, current, or chronic infection, including hepatitis B or hepatitis C infection or human immunodeficiency virus infection; - evidence of active, latent, or inadequately-treated Mycobacterium Tuberculosis infection; - a history of lymphoproliferative disorder; - major surgery within two weeks before starting study drugs, or having unhealed operation wounds; - history of cancer, except adequately treated, non-metastatic basal-cell or squamous-cell cancer of the skin or cervical carcinoma in situ; - Pregnant or lactating women (women of childbearing potential should have a negative test for HCG); - significant history of alcohol/drug abuse or addiction; - foreseeable inability to cooperate with given instructions and study procedures; - any condition precluding the administration of study drugs in compliance with datasheets indications; - any condition or laboratory parameter precluding the inclusion of the participant according to investigator