Objective. To determine the safety and therapeutic potential of sulfas
alazine (SSZ) in the treatment of a large cohort of patients with juve
nile rheumatoid arthritis (JRA). Methods. All patients who required th
e addition of a second line agent were offered SSZ and assessed at reg
ular intervals. Thirty patients took SSZ as their sole drug therapy. O
ne hundred thirty nine patients with an average age of 11.5 yrs (range
1.5-21.8 yrs) took the medication. The duration of symptoms at the st
art of treatment was 30 mo (1-130 mo). All subtypes of JRA were includ
ed in the study group. Patients were treated for a mean of 13 mo (1-42
mo) with 31 mg/kg/day of SSZ. Significant improvement was defined as
50% decrease in the number of joints with active arthritis; or 50% dec
rease in the number of joints with effusion; or 50% decrease in total
degrees of joint contractures; or normalization of an elevated erythro
cyte sedimentation rate within 12 months of starting treatment. Data o
n adverse reactions, remissions, and treatment failure were also colle
cted. Results. One hundred two patients (73%) had significant improvem
ent after starting SSZ. Fifty-six patients (40%) were able to stop all
other medication at an average of 9.5 mo. Thirty-nine patients (28%)
remitted and discontinued all medication. Twenty-three patients (17%)
discontinued the drug for adverse reactions. All reactions resolved co
mpletely when the drug was discontinued. Conclusion. SSZ is safe and a
ppears to be an effective primary or second line therapy for JRA, and
should be studied further in a multi-institutional, placebo controlled
study.