The purpose of this study is to test and compare the effects of investigational drug risankizumab to the active control, ustekinumab, on pediatric plaque psoriasis. Subjects that meet all eligibility criteria will be randomized 2:1 to receive 150 mg dose of risankizumab and 45mg or 90 mg dose of ustekinumab - both drug dosages are determined by weight. At Week 16, subjects receiving ustekinumab or are unresponsive to risankizumab, will be switched to or continue to receive 150 mg risankizumab every 12 weeks. Subjects that are responsive to risankizumab at Week 16, will be re-randomized 1:1 to continue risankizumab or withdrawal from the study drug. Subjects randomized to withdrawal will receive no study drug until a flare occurs, after which they will enter a 16-week re-treatment period.
This study is being done to evaluate the safety and efficacy of ARQ-151 cream in subjects with mild to moderate eczema (atopic dermatitis) after application once every day for a month. Results will be compared against a vehicle (placebo). The vehicle is a dummy drug made from the same base product used to make ARQ-151 cream, but it does not contain any active study drug. ARQ-151 is a cream that contains the active ingredient roflumilast. Roflumilast is marketed in Canada, the United States, and other countries as a tablet (pill taken by mouth) for flares of a specific chronic lung disease. You will apply the study drug on your eczema lesions once a day for 28 days. The study doctor will tell you which lesions to treat. Any newly appearing eczema lesions that arise during the study must also be treated.
Genetic changes to human skin contribute to a wide variety of conditions and diseases that affect over 20% of the population. However, the genes and molecules that are responsible for human skin development and disease are not fully understood, preventing the development of treatment options. This proposal seeks to better understand one disease in particular, linear morphea, a form of Sclerederma that can affect the skin, muscle, and bone. This study will recruit subjects to collect and use skin tissue for the purpose of identifying the genetic causes of linear morphea.