A Study of Guselkumab in Naive or Bio-experienced Participants With Regional (Facial and Genital) Psoriasis

The sPGA for the facial region is a physician global rating of psoriasis severity, which evaluates plaque thickness, scaling and erythema, at a given point in time. The sPGA comprises a 6-point rating scale from 0 to 5 where 0 = clear, 1 = minimal/ almost clear, 2 = mild, 3 = moderate, 4 = severe, 5 = very severe.

The sPGA for the genital region is a physician global rating of psoriasis severity, which evaluates plaque thickness, scaling and erythema, at a given point in time. The sPGA comprises a 6-point rating scale from 0 to 5 where 0 = clear, 1 = minimal/ almost clear, 2 = mild, 3 = moderate, 4 = severe, 5 = very severe.

The DLQI is a 10-item questionnaire that measures the impact of skin disease on participants' quality of life. Each question is evaluated on a 4-point scale ranging from 0 (not at all) to 3 (very much); where higher scores indicate greater impact on quality of life. The DLQI is calculated by summing the scores of the questions and ranges from 0 to 30 where 0-1 = no effect at all on the participant's life; 2-6 = small effect on the participant's life; 7-12 = moderate effect on the participant's life; 13-18 = very large effect on the participant's life; 19-30 = extremely large effect on the participant's life. Higher scores indicate greater impact on quality of life of participants.

The DLQI is a 10-item questionnaire that measures the impact of skin disease on participants' quality of life. Each question is evaluated on a 4-point scale ranging from 0 (not at all) to 3 (very much); where higher scores indicate greater impact on quality of life. The DLQI is calculated by summing the scores of the questions and ranges from 0 to 30 where 0-1 = no effect at all on the participant's life; 2-6 = small effect on the participant's life; 7-12 = moderate effect on the participant's life; 13-18 = very large effect on the participant's life; 19-30 = extremely large effect on the participant's life. Higher scores indicate greater impact on quality of life of participants.

The SF-36 is a survey that measures 8 domains of health including: physical functioning, role limitations due to physical health (role-physical), bodily pain, general health perceptions, vitality, social functioning, role limitations due to emotional problems (role-emotional) and general mental health. Each item is scored on a scale of 0 to 100. Worst value is 0 and best value is 100.

The SF-36 is a survey that measures 8 domains of health including: physical functioning, role limitations due to physical health (role-physical), bodily pain, general health perceptions, vitality, social functioning, role limitations due to emotional problems (role-emotional) and general mental health. Each item is scored on a scale of 0 to 100. Worst value is 0 and best value is 100.

The SF-36 is a survey that measures 8 domains of health including: physical functioning, role limitations due to physical health (role-physical), bodily pain, general health perceptions, vitality, social functioning, role limitations due to emotional problems (role-emotional) and general mental health. Each item is scored on a scale of 0 to 100. Worst value is 0 and best value is 100.

The SF-36 is a survey that measures 8 domains of health including: physical functioning, role limitations due to physical health (role-physical), bodily pain, general health perceptions, vitality, social functioning, role limitations due to emotional problems (role-emotional) and general mental health. Each item is scored on a scale of 0 to 100. Worst value is 0 and best value is 100.

Each VAS is a patient-rated assessment designed to evaluate the intensity of pain, itch or discomfort on a linear scale of 0-100. Operationally, each VAS is represented by a 100 mm horizontal line anchored by extreme descriptors at each end, where 0 = "No Symptom" and 100 = "Worst Symptom Imaginable".

Each VAS is a patient-rated assessment designed to evaluate the intensity of pain, itch or discomfort on a linear scale of 0-100. Operationally, each VAS is represented by a 100 mm horizontal line anchored by extreme descriptors at each end, where 0 = "No Symptom" and 100 = "Worst Symptom Imaginable".

Each VAS is a patient-rated assessment designed to evaluate the intensity of redness, scaling, and thickness on a linear scale of 0-100. Operationally, each VAS is represented by a 100 mm horizontal line anchored by extreme descriptors at each end, where 0 = "No Sign" and 100 = "Worst Sign Imaginable".

Each VAS is a patient-rated assessment designed to evaluate the intensity of redness, scaling, and thickness on a linear scale of 0-100. Operationally, each VAS is represented by a 100 mm horizontal line anchored by extreme descriptors at each end, where 0 = "No Sign" and 100 = "Worst Sign Imaginable".

The overall sPGA is defined as physician global rating of psoriasis severity, which evaluates plaque thickness, scaling and erythema, at a given point in time. The sPGA comprises a 6-point rating scale from 0 to 5 where 0 = clear, 1 = minimal/ almost clear, 2 = mild, 3 = moderate, 4 = severe, 5 = very severe.

The PASI is a tool to assess and grade the severity of psoriasis and response to therapy. In the PASI, the body is divided into four areas: the head, trunk, upper extremities and lower extremities. Each of these areas is assessed separately for the percentage of surface area involved, which translates to a numeric score that ranges from 0 to 6, and for degree of erythema, scaling and induration/thickness, which are each rated on a scale of 0 to 4. The PASI produces a numeric score that can range from 0 to 72, with higher score indicating more severe disease status. A PASI 100 response is defined as 100 percent (%) improvement in PASI score from baseline.

The PASI is a tool to assess and grade the severity of psoriasis and response to therapy. In the PASI, the body is divided into four areas: the head, trunk, upper extremities and lower extremities. Each of these areas is assessed separately for the percentage of surface area involved, which translates to a numeric score that ranges from 0 to 6, and for degree of erythema, scaling and induration/thickness, which are each rated on a scale of 0 to 4. The PASI produces a numeric score that can range from 0 to 72, with higher score indicating more severe disease status. A PASI 90 response is defined as >=90% improvement in PASI score from baseline.

The PASI is a tool to assess and grade the severity of psoriasis and response to therapy. In the PASI, the body is divided into four areas: the head, trunk, upper extremities and lower extremities. Each of these areas is assessed separately for the percentage of surface area involved, which translates to a numeric score that ranges from 0 to 6, and for degree of erythema, scaling and induration/thickness, which are each rated on a scale of 0 to 4. The PASI produces a numeric score that can range from 0 to 72, with higher score indicating more severe disease status. A PASI 75 response is defined as >=75% improvement in PASI score from baseline.

The PASI is a tool to assess and grade the severity of psoriasis and response to therapy. In the PASI, the body is divided into four areas: the head, trunk, upper extremities and lower extremities. Each of these areas is assessed separately for the percentage of surface area involved, which translates to a numeric score that ranges from 0 to 6, and for degree of erythema, scaling and induration/thickness, which are each rated on a scale of 0 to 4. The PASI produces a numeric score that can range from 0 to 72, with higher score indicating more severe disease status. Mean percent change from baseline in PASI score will be assessed.

BSA affected by psoriasis of <5% is considered mild psoriasis, 5-10% moderate psoriasis, and >10% severe psoriasis.

The PASI is a tool to assess and grade the severity of psoriasis and response to therapy. In the PASI, the body is divided into four areas: the head, trunk, upper extremities and lower extremities. Each of these areas is assessed separately for the percentage of surface area involved, which translates to a numeric score that ranges from 0 to 6, and for degree of erythema, scaling and induration/thickness, which are each rated on a scale of 0 to 4. The PASI produces a numeric score that can range from 0 to 72, with higher score indicating more severe disease status. Percentage of participants who achieve an absolute PASI score <3 will be assessed.

The TSQM-9 is a 9-item generic participant-reported outcome instrument to assess participants' satisfaction with medication and covers domains of effectiveness, convenience and global satisfaction. The instrument is scored by domain with scores ranging from 0-100, where a lower score indicates lower satisfaction.

Persistency with treatment is defined as duration of time from initiation to last dose of therapy, as well as the percentage of participants still on treatment at the end of the observation period.

Participants will be invited to fill in two narrative plots; one at the enrollment visit and one at the week 52 visit.

An AE is any untoward medical event that occurs in a participant administered an investigational product, and it does not necessarily indicate only events with clear causal relationship with the relevant investigational product. A SAE is an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly.