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Clinical Trial
Journal Article
Multicenter Study
Efficacy of infliximab in refractory ankylosing spondylitis: results of a six-month open-label study.
Rheumatology 2002 November
OBJECTIVE: To evaluate the efficacy and safety of a loading regimen of the anti-tumour necrosis factor alpha (TNF-alpha) antibody infliximab in predominantly axial severe ankylosing spondylitis (AS).
METHODS: We enrolled in this study 50 patients (76% males, 87% HLA-B27(+), median age 35 yr, median disease duration 13 yr) with active AS [Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) >or=30/100 and serum C-reactive protein concentration >or=15 mg/l) despite treatment with a non-steroidal anti-inflammatory drug, and without peripheral arthritis, uveitis or active inflammatory bowel disease. Other disease-modifying anti-rheumatic drugs were discontinued >or=3 months before inclusion and were not allowed during the study. Patients received three infusions of infliximab (5 mg/kg) at weeks 0, 2 and 6 and were monitored clinically and biologically until week 24.
RESULTS: Forty-eight patients completed the treatment. In intention-to-treat analysis, all parameters were significantly improved at week 2 and generally reached maximal improvement at week 8. The proportion of responders, defined by a reduction of >or=20% in the global assessment of pain (GAP) or by the AS Assessment Study Group (ASAS 20%) criteria, and the proportion of patients reaching partial remission were 98, 94 and 70% respectively. Relapse, defined as >or=50% loss of maximal GAP improvement, occurred in 73% of completers, with a median delay of 14 weeks after the third infusion. No serious adverse event related to the treatment was observed.
CONCLUSIONS: This study confirms, in a large group of severely affected AS patients, the remarkable efficacy of infliximab. Relapse usually occurred after discontinuation of the drug, but almost one-third of completers were still free of relapse 4 months after the last infusion.
METHODS: We enrolled in this study 50 patients (76% males, 87% HLA-B27(+), median age 35 yr, median disease duration 13 yr) with active AS [Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) >or=30/100 and serum C-reactive protein concentration >or=15 mg/l) despite treatment with a non-steroidal anti-inflammatory drug, and without peripheral arthritis, uveitis or active inflammatory bowel disease. Other disease-modifying anti-rheumatic drugs were discontinued >or=3 months before inclusion and were not allowed during the study. Patients received three infusions of infliximab (5 mg/kg) at weeks 0, 2 and 6 and were monitored clinically and biologically until week 24.
RESULTS: Forty-eight patients completed the treatment. In intention-to-treat analysis, all parameters were significantly improved at week 2 and generally reached maximal improvement at week 8. The proportion of responders, defined by a reduction of >or=20% in the global assessment of pain (GAP) or by the AS Assessment Study Group (ASAS 20%) criteria, and the proportion of patients reaching partial remission were 98, 94 and 70% respectively. Relapse, defined as >or=50% loss of maximal GAP improvement, occurred in 73% of completers, with a median delay of 14 weeks after the third infusion. No serious adverse event related to the treatment was observed.
CONCLUSIONS: This study confirms, in a large group of severely affected AS patients, the remarkable efficacy of infliximab. Relapse usually occurred after discontinuation of the drug, but almost one-third of completers were still free of relapse 4 months after the last infusion.
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