An Efficacy and Safety Study of CNTO1959 (Guselkumab) in the Treatment of Participants With Generalized Pustular Psoriasis or Erythrodermic Psoriasis
Pustular Psoriasis

About this trial
This is an interventional treatment trial for Pustular Psoriasis focused on measuring Generalized Pustular Psoriasis, Erythrodermic Psoriasis, Guselkumab, CNTO1959
Eligibility Criteria
Inclusion Criteria:
- Have a diagnosis of generalized pustular psoriasis (GPP) or erythrodermic psoriasis (EP) at screening. A diagnosis of GPP must be classified on the basis of the criteria for diagnosis of GPP by Japanese Dermatological Association (JDA)
- Have a history of plaque-type psoriasis if subjects have a diagnosis of EP
- Have an involved body surface area (BSA) of lesion greater than or equal to (>=) 80 percent (%) at baseline if subjects have a diagnosis of EP.
- Be a candidate for phototherapy or systemic treatment for psoriasis (either naïve or history of previous treatment)
- Before the first administration of study drug, a woman must be either not of childbearing potential or of childbearing potential and practicing a highly effective methods of birth control, consistent with local regulations regarding the use of birth control methods for subjects participating in clinical studies
Exclusion Criteria:
- Has a total score of JDA severity index for GPP >=14 at baseline if subjects have a diagnosis of GPP
- Has a differential diagnosis of the erythroderma (exmaple (eg), erythroderma caused by lymphoma or drug eruption) other than EP.
- Has refused hospitalization though the investigator needed hospitalization
- Has body mass index (BMI) less than (<) 18 kilogram per square meters (kg/m^2) or meets the following modified criteria for cachexia.
- Has a BMI < 20 kg/m^2 and has lost more than 5% of their body weight in the previous months, and 4 out of the following are present: a) decreased muscle strength b) fatigue or reduced physical activity c) anorexia d) low muscle mass e) CRP greater than (>) 7 mg/L 6) hemoglobin (Hb) <12 gram per deciliters (g/dL) f) serum albumin < 3.0 g/dL
- Has Common Terminology Criteria for Adverse Events (CTCAE) Version 4 Grade 2 or higher heart failure or CTCAE v.4 Grade 3 or higher kidney failure
Sites / Locations
Arms of the Study
Arm 1
Experimental
Guselkumab
Participants will receive 50 milligram (mg) guselkumab subcutaneously at Weeks 0, 4 and 12. At Week 16 through the study end (Week 52) participants who are defined "Very much improved" or "Much improved" in Clinical Global Impression (CGI) will continue to receive guselkumab 50 mg every 8 weeks from Week 20 to the study end (Week 52). At each visit timing from Week 20, participants who are defined "No change" or "Worsened" in CGI will receive guselkumab 100 mg and continue 100 mg every 8 weeks dosing until the study end (Week 52). Participants who are defined "Minimally improved" in CGI will also receive guselkumab 100 mg only if the investigator considers that it is necessary.