title: Infliximab-induced lupus in Crohn's disease: a case report.
abstract: An 18-year-old male patient was under treatment with infliximab at a dose of 5 mg/kg at Weeks 0, 2 and 6 for refractory Crohn's disease. In June 2002, the patient was admitted to the Outpatient Clinic of the Rheumatology Unit for arthralgia affecting the small joints, non-pruritic crops of purple skin lesions and malar rash in the face. Serum antinuclear antibodies were positive (1:640 speckled pattern), and anti-double-stranded DNA was positive (1:80); moreover, positivity of anti-extractable nuclear antigen was observed. Antihistone antibodies, lupus anticoagulant and anticardiolipin antibodies were negative. A diagnosis of infliximab-induced lupus was made and the drug treatment was withdrawn. However, 3 months after withdrawal of treatment, the patient still showed clinical and laboratory symptoms of systemic lupus erythematosus. After 6 months of treatment, systemic lupus erythematosus-related symptoms disappeared and anti-double-stranded DNA returned to normal. The patient is currently under treatment with prednisone 20 mg/day for systemic lupus erythematosus and with oral mesalazine 2.4 mg/day for Crohn's disease. Treatment with infliximab is known to produce an increase of autoantibodies (antinuclear antibodies, anti-double-stranded DNA), but not clinical disease. This is the first case, to our knowledge, of onset of prolonged infliximab-induced lupus.
authors.affiliation: Rheumatology Unit, L Sacco University Hospital, Milan, Italy. sarzi@tiscali.it
authors.forename: P
authors.initials: P
authors.lastname: Sarzi-Puttini
authors.forename: S
authors.initials: S
authors.lastname: Ardizzone
authors.forename: G
authors.initials: G
authors.lastname: Manzionna
authors.forename: F
authors.initials: F
authors.lastname: Atzeni
authors.forename: E
authors.initials: E
authors.lastname: Colombo
authors.forename: M
authors.initials: M
authors.lastname: Antivalle
authors.forename: M
authors.initials: M
authors.lastname: Carrabba
authors.forename: G
authors.initials: G
authors.lastname: Bianchi-Porro
mesh_terms: D000293:Adolescent; D000974:Antibodies, Antinuclear / Q000097:blood; D000911:Antibodies, Monoclonal / Q000008:administration & dosage / Q000009:adverse effects*; D003424:Crohn Disease / Q000188:drug therapy*; D005765:Gastrointestinal Agents / Q000008:administration & dosage / Q000009:adverse effects*; D006801:Humans; D000069285:Infliximab; D008180:Lupus Erythematosus, Systemic / Q000139:chemically induced*; D008297:Male
chemical_list: D000974:Antibodies, Antinuclear; D000911:Antibodies, Monoclonal; D005765:Gastrointestinal Agents; D000069285:Infliximab