This is a randomized single-blind comparative parallel group efficacy and safety study of ustekinumab biosimilar GNR-068 (45 mg) and reference product Stelara® (45 mg) in the treatment of patients with moderate and severe forms of plaque psoriasis. Participants received a subcutaneous dose of ustekinumab 45 mg (GNR-068 or Stelara®) at weeks 0 and 4 weeks then every 12 weeks thereafter until week 28 and then all patients receive GNR-068 45 mg. For patients with partially respond to the initial regimen the regimen can be adjusted.
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