Tazarotene

This is a multicenter, randomized, double-blinded, placebo-controlled, dose-range finding study to evaluate the efficacy and safety of ORKA-001 in adult participants with moderate-to-severe plaque psoriasis.

The main aim of this study is to see how well the medicine zasocitinib works, how safe it is, and how children and teenagers aged 4 to under 18 with moderate-to-severe plaque psoriasis respond to it. The study will be done in 2 parts: Part A will include both children and teenagers, while part B will only include children. At first, only teenagers who meet the study rules can participate in this study. Children may only start to participate once enough information has been collected from other studies with zasocitinib. Participants in Part A will initially be assigned to receive either zasocitinib or placebo for the first 16 weeks of treatment, then all participants will receive zasocitinib through the end of the study. All participants in Part B will be assigned to receive treatment with zasocitinib throughout the study. Participants will be in the study for up to 4 years and 2 months (217 weeks), including up to 35 days for the screening period, 208 weeks of treatment (Part A and Part B) and a 4-week safety follow-up period. During the study, participants will visit their study site multiple times.

A study to evaluate the long-term safety of Deucravacitinib versus Ustekinumab in participants with psoriasis

This is a multicenter, randomized, double-blinded, placebo-controlled, proof-of-concept study to evaluate the efficacy, safety, tolerability, and pharmacokinetics of ORKA-001 in adult participants with moderate-to-severe plaque psoriasis.

The purpose of this study is to evaluate the efficacy, safety, and drug levels of Deucravacitinib (BMS-986165) in adolescent participants with moderate to severe plaque psoriasis

The main aim of this study is to assess whether zasocitinib works better than deucravacitinib in treating participants with moderate-to-severe plaque psoriasis. Participants will take one tablet daily of either zasocitinib or a matching placebo, along with one capsule daily of either over-encapsulated deucravacitinib or a matching placebo, for a duration of 16 weeks. Participants will be in the study for up to 25 weeks, which includes screening period of up to 35 days, a 16-week treatment period, and a 4-week safety follow-up period.

The main purpose of this study is to assess how well JNJ-77242113 works when compared to placebo and ustekinumab in participants with moderate to severe plaque psoriasis.

The objective of the ESK-001-018 long term extension is to evaluate the safety and efficacy of ESK-001 over time. The scientific questions it aims to answer are: * How safe is taking ESK-001 long-term in people with moderate to severe plaque psoriasis? * Does taking ESK-001 long-term reduce the severity of people's plaque psoriasis? Patients will enter the long-term extension study following completion of one of the parent studies (ESK-001-016 or ESK-001-017) and will receive open-label ESK-001 twice daily for 24 weeks. After 24 weeks, the first 200 patients meeting at least PASI-75 clinical response will be randomly assigned to receive ESK-001 or placebo. At any point during this time, the patients losing the initial clinical response may return to the open-label ESK-001 treatment. Patients who complete Week 48 will return to open-label ESK-001 treatment and they will receive ESK-001 until the end of the study or discontinuation. All the remaining patients not meeting the entry criteria for the randomized withdrawal phase will continue to receive open-label ESK-001 for the remainder of the study. Patients taking part in the study must be men or women aged at least 18 years old and have completed a previous (parent) study of ESK-001 in moderate to severe plaque psoriasis. Patients must consent and agree to: * ensure drug daily compliance until end of study or discontinuation. * visit the clinic for checkups and assessments. * provide blood and urine samples.

The main aim of this study is to check the side effects of TAK-279 and how well it is tolerated in participants with moderate-to-severe plaque psoriasis. All participants will be assigned to study treatments of TAK-279 and will be treated with TAK-279 if the participants meet the study rules. Participants will be in the study for up to 217 weeks, including up to 35 days for the screening period, 52 weeks (Part A) up to 156 additional weeks (Part B) study treatment and 4 weeks follow up period. During the study, participants will visit their study clinic multiple times.

The purpose of this study is to assess the impact of adding two questions and pictures to the validated PEST on the potential diagnosis of PsA in participants with moderate-to-severe plaque PsO in Canada.

A Randomized, Double-Blind, Vehicle-Controlled, Multicenter, Dose-Ranging, Phase 2 Study to Evaluate the Efficacy and Safety of Different Doses of ZL-1102 Topical gel (A Human VH IL-17A Antibody Fragment) in the Treatment of Chronic Plaque Psoriasis

The purpose of this research study is to evaluate the effectiveness and safety of bimekizumab in individuals with moderate-to-severe psoriasis who have failed similar therapies. Bimekizumab improves psoriasis by suppressing a type of substance found in bodies called interleukins (specifically, interleukins 17a and 17F), which are known to increase inflammation. This study will look at the effectiveness of bimekizumab in psoriasis patients that have failed previous therapies that target interleukin IL-17A or 23.