title: Observational case series on a group of patients with severe psoriasis who failed to respond to antitumour necrosis factor alpha biologics and switched to ustekinumab.
authors.forename: A M R
authors.initials: AM
authors.lastname: Downs
mesh_terms: D000911:Antibodies, Monoclonal / Q000627:therapeutic use*; D061067:Antibodies, Monoclonal, Humanized; D003879:Dermatologic Agents / Q000627:therapeutic use*; D006801:Humans; D007155:Immunologic Factors / Q000627:therapeutic use*; D011565:Psoriasis / Q000188:drug therapy*; D017211:Treatment Failure; D014409:Tumor Necrosis Factor-alpha / Q000037:antagonists & inhibitors*; D000069549:Ustekinumab
chemical_list: D000911:Antibodies, Monoclonal; D061067:Antibodies, Monoclonal, Humanized; D003879:Dermatologic Agents; D007155:Immunologic Factors; D014409:Tumor Necrosis Factor-alpha; D000069549:Ustekinumab