esponse to STELARA® among these subgroups.
In subjects who weighed 100 kg or less, response rates were similar with both the 45 mg and 90 mg doses; however, in subjects who weighed greater than 100 kg, higher response rates were seen with 90 mg dosing compared with 45 mg dosing (Table 6 below).
Table 6: Clinical Outcomes by Weight Ps STUDY 1 and Ps STUDY 2
Ps STUDY 1 Ps STUDY 2
STELARA® STELARA®
Placebo 45 mg 90 mg Placebo 45 mg 90 mg
* Patients were dosed with study medication at Weeks 0 and 4.
Subjects randomized 255 255 256 410 409 411
PASI 75 response at Week 12*
≤100 kg 4% 74% 65% 4% 73% 78%
6/166 124/168 107/164 12/290 218/297 225/289
>100 kg 2% 54% 68% 3% 49% 71%
2/89 47/87 63/92 3/120 55/112 86/121
PGA of Cleared or Minimal at Week 12*
≤100 kg 4% 64% 63% 5% 74% 75%
7/166 108/168 103/164 14/290 220/297 216/289
>100 kg 3% 49% 58% 3% 51% 69%
3/89 43/87 53/92 4/120 57/112 84/121
Subjects in Ps STUDY 1 who were PASI 75 responders at both Weeks 28 and 40 were re-randomized at Week 40 to either continued dosing of STELARA® (STELARA® at Week 40) or to withdrawal of therapy (placebo at Week 40). At Week 52, 89% (144/162) of subjects re-randomized to STELARA® treatment were PASI 75 responders compared with 63% (100/159) of subjects re-randomized to placebo (treatment withdrawal after Week 28 dose). The median time to loss of PASI 75 response among the subjects randomized to treatment withdrawal was 16 weeks.
14.2 Psoriatic Arthritis
The safety and efficacy of STELARA® was assessed in 927 patients (PsA STUDY 1, n=615; PsA STUDY 2, n=312), in two randomized, double-blind, placebo-controlled studies in adult patients 18 years of age and older with active PsA (≥5 swollen joints and ≥5 tender joints) despite non-steroidal anti-inflammatory (NSAID) or disease modifying antirheumatic (DMARD) therapy. Patients in these studies had a diagnosis of PsA for at least 6 months. Patients with each subtype of PsA were enrolled, including polyarticular arthritis with the absence of rheumatoid nodules (39%), spondylitis with peripheral arthritis (28%), asymmetric peripheral arthritis (21%), distal interphalangeal involvement (12%) and arthritis mutilans (0.5%). Over 70% and 40% of the patients, respectively, had enthesitis and dactylitis at baseline.
Patients were randomized to receive treatment with STELARA® 45 mg, 90 mg, or placebo subcutaneously at Weeks 0 and 4 followed by every 12 weeks (q12w) dosing. Approximately 50% of patients continued on stable doses of MTX (≤25 mg/week). The primary endpoint was the percentage of patients achieving ACR 20 response at Week 24.
In PsA STUDY 1 and PsA STUDY 2, 80% and 86% of the patients, respectively, had been previously treated with DMARDs. In PsA STUDY 1, previous treatment with anti-tumor necrosis factor (TNF)-α agent was not allowed. In PsA STUDY 2, 58% (n=180) of the patients had been previously treated with TNF blocker, of whom over 70% had discontinued their TNF blocker treatment for lack of efficacy or intolerance at any time.
Clinical Response
|
