This study will assess the safety and efficacy of ARQ-151 cream vs placebo applied once a day for 56 days by subjects with chronic plaque psoriasis
This is a parallel group, double blind, vehicle-controlled study in which ARQ-151 cream or vehicle is applied once daily x 8 weeks to subjects with psoriasis
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Enrollment
442
ARQ-151 0.3% cream
ARQ-151 vehicle cream
Number of Participants Achieving Success on the Investigator Global Assessment (IGA) Scale
The number of participants achieving "success" in IGA assessment of disease severity at Week 8 is presented for each arm. Success was defined as achievement of an IGA score of 0 ('clear') or 1 ('almost clear') at Week 8, accompanied by a ≥2-grade improvement from baseline IGA score. The IGA is 5-point scale assessing the severity of plaque psoriasis, with scores ranging from 0 ('clear') to 4 ('severe'), and higher scores indicate greater symptom severity. The IGA scores are based on observed data, whereas odds ratio and p-values were calculated using multiple imputation of missing values.
Time frame: Week 8
Time to Achieve Psoriasis Area Severity Index-50 (PASI-50)
The Psoriasis Area and Severity Index (PASI) is widely used for the measurement of severity of psoriasis. PASI combines the assessment of the severity of lesions and the area affected into a single score in the range from 0 (no disease) to 72 (maximal disease), with higher scores indicating greater symptom severity. The time to achieve PASI-50 (defined as a 50% reduction from baseline in PASI score) is presented, and is based on observed data only. Participants are included whether they achieved PASI-50 or not.
Time frame: From start of treatment to achievement of PASI-50 or study completion/early termination (maximum duration = 124 days)
Number of Participants Achieving Psoriasis Area Severity Index-75 (PASI-75)
The Psoriasis Area and Severity Index (PASI) is widely used for the measurement of severity of psoriasis. PASI combines the assessment of the severity of lesions and the area affected into a single score in the range from 0 (no disease) to 72 (maximal disease), with higher scores indicating greater symptom severity. The number of participants achieving PASI-75 (defined as a 75% reduction from baseline in PASI score) at Week 8 is presented. Participant counts are based on observed data only.
Time frame: Baseline (Day 1) and Week 8
Number of Participants Achieving Psoriasis Area Severity Index-90 (PASI-90)
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Arcutis Biotherapeutics Clinical Site 203
Scottsdale, Arizona, United States
Arcutis Biotherapeutics Clinical Site 239
Beverly Hills, California, United States
Arcutis Biotherapeutics Clinical Site 225
Encino, California, United States
Arcutis Biotherapeutics Clinical Site 220
San Diego, California, United States
Arcutis Biotherapeutics Clinical Site 208
Santa Monica, California, United States
Arcutis Biotherapeutics Clinical Site 215
Santa Monica, California, United States
Arcutis Biotherapeutics Clinical Site 223
Boynton Beach, Florida, United States
Arcutis Biotherapeutics Clinical Site 237
DeLand, Florida, United States
Arcutis Biotherapeutics Clinical Site 228
Largo, Florida, United States
Arcutis Biotherapeutics Clinical Site 201
North Miami Beach, Florida, United States
...and 29 more locations
The Psoriasis Area and Severity Index (PASI) is widely used for the measurement of severity of psoriasis. PASI combines the assessment of the severity of lesions and the area affected into a single score in the range from 0 (no disease) to 72 (maximal disease), with higher scores indicating greater symptom severity. The number of participants achieving PASI-90 (defined as a 90% reduction from baseline in PASI score) at Week 8 is presented. Participant counts are based on observed data only.
Time frame: Baseline (Day 1) and Week 8
Number of Participants Achieving Success in Intertriginous Investigator Global Assessment (I-IGA) Scale Assessment of Disease Severity at Week 8
The number of participants with I-IGA score ≥2 at baseline achieving "success" in IGA assessment of disease severity at Week 8 is presented (observed data only) for each arm. Success was defined as achievement of an I-IGA score of 0 ('clear') or 1 ('almost clear') at Week 8, accompanied by a ≥2-grade improvement from baseline I-IGA score. The IGA is a 5-point scale assessing the severity of plaque psoriasis, with scores ranging from 0 ('clear') to 4 ('severe'), and higher scores indicate greater symptom severity.
Time frame: Week 8
Number of Participants Achieving I-IGA Score of 'Clear' at Week 8
The number of participants achieving an IGA score of 0 ('clear') at Week 8 is presented (observed data only) for each arm. The I-IGA is a 5-point scale assessing the severity of intertriginous area plaque psoriasis, with scores ranging from 0 ('clear') to 4 ('severe'), and higher scores indicate greater symptom severity.
Time frame: Week 8
Number of Participants Achieving Success in Worst Itch Numerical Rating Scale (WI-NRS) Pruritus Score
The number of participants achieving success in WI-NRS is presented. Success is defined as achievement of a ≥ 4-point reduction in WI-NRS pruritus score in participants with WI-NRS pruritus score ≥ 4 at baseline. The WI-NRS is a 10 point scale ranging from 0 ('no itch') to 10 ('worst itch imaginable') the participant experienced in the past 24 hours, with higher scores indicating greater symptoms severity. Results are based on observed data only.
Time frame: Baseline (Day 1) and Week 2, Week 4, Week 8
Change From Baseline in Psoriasis Symptoms Diary (PSD) Score
The PSD is a 16-item questionnaire asking subjects to rate the severity of psoriasis-related symptoms in the past 24 hours. Each question is scored from 0 ("no symptoms") to 10 ("worst imaginable symptoms"). Scores range from 0 to 160, with higher scores indicating greater symptom severity. The least squares (LS) mean (95% CI) change in PSD total score relative to baseline is presented for each treatment arm, with decreases from baseline indicating symptom improvement.
Time frame: Baseline (Day 1) and Weeks 4 and 8