An Efficacy and Safety of Guselkumab in Participants With Palmoplantar Pustulosis

Conditions

Guselkumab — DRUG
Participants will receive two or one syringe of guselkumab 100 mg subcutaneously at Week 0, 4, 12 and every 8 weeks thereafter through Week 60 in group 1 or 2. Group 3a or 3b participants will receive two or one syringe of guselkumab 100 mg at Week 16, 20 and every 8 weeks thereafter through Week 60.
Placebo — DRUG
Participants in group 1 will receive placebo at Week 16. Participants in group 2 will receive placebo at Week 0, 4, 12, 16, 20 and every 8 weeks thereafter through Week 60. Participants in group 3 will receive placebo at Week 0, 4, 12, then at Week 16, 20 and every 8 weeks thereafter through Week 60 for group 3b.

The purpose of this study is to evaluate the efficacy and safety of guselkumab for the treatment of participants with palmoplantar pustulosis.

Experimental: Group 1
Participants will receive guselkumab 200 milligram (mg) at Week 0, 4, 12 and every 8 weeks thereafter through Week 60, and two syringes of placebo at Week 16 to maintain the blind.
Experimental: Group 2
Participants will receive a syringe of guselkumab 100 mg and a syringe of placebo for guselkumab at Week 0, 4, 12 and every 8 weeks thereafter through Week 60, two syringes of placebo at Week 16 to maintain the blind.
Experimental: Group 3
Participants will receive two syringes of placebo at Week 0, 4 and 12. At Week 16, placebo participants will be randomized in a 1:1 ratio to guselkumab mg arm (Group 3a) or 100 mg arm (Group 3b). Group 3a participants will receive guselkumab 200 mg at Week 16, 20 and every 8 weeks thereafter through Week 60. Group 3b participants will receive guselkumab 100 mg and a syringe of placebo at Week 16, 20 and every 8 weeks thereafter through Week 60.

Change From Baseline in Palmoplantar Pustulosis Area and Severity Index (PPPASI) Total Score at Week 16 [ Time Frame: Baseline and Week 16 ]