Participants who meet eligibility criteria will be randomized in a 1:1:1 ratio to receive a twice daily oral LNK01001 dose A or LNK01001 dose B or matching placebo for 12 weeks.
The study was to include a 12-week double-blind treatment period. Participants who met eligibility criteria were to be randomized in a 1:1:1 ratio to one of the three treatment groups. Group 1:LNK01001 dose A (Day 1 to Week 12) Group 2:LNK01001 dose B (Day 1 to Week 12) Group 3: Matching placebo (Day 1 to Week 12)
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
150
Capsules taken orally
Capsules taken orally
Capsules taken orally
Jianzhong Zhang
Beijing, China
Percent Change from Baseline in Eczema Area and Severity Index (EASI) Score
EASI is a tool used to measure the extent (area) and severity of atopic eczema based on assessments of the head/neck, trunk, upper limbs and lower limbs. For each region the area score is recorded as the percentage of skin affected by eczema. For each region, the severity score is calculated as the sum of the intensity scores (scored as none \[0\], mild \[1\], moderate \[2\], or severe \[3\]) for redness (erythema, inflammation), thickness (induration, papulation, swelling - acute eczema), scratching (excoriation), and lichenification (lined skin, prurigo nodules - chronic eczema). The total EASI score for each region is calculated by multiplying the severity score by the area score, with adjustment for the proportion of the body region to the whole body. The final EASI score is the sum of the 4 region scores and ranges from 0 to 72 where higher scores represent worse disease.
Time frame: week 12
Percentage of Participants Who Achieved a 75% Reduction in EASI Score (EASI 75)
An EASI 75 response is defined as participants with at least a 75% reduction (improvement) in EASI score relative to the Baseline value
Time frame: Week 4,8,12
Percentage of Participants Achieving an Investigator Global Assessment (IGA) response
IGA response defined as an IGA score of 0 (clear) or 1 (almost clear) with a reduction from baseline of ≥ 2 points
Time frame: Week 4,8,12
Percent Change from Baseline in EASI Score
EASI is a tool used to measure the extent (area) and severity of atopic eczema based on assessments of the head/neck, trunk, upper limbs and lower limbs. For each region the area score is recorded as the percentage of skin affected by eczema. For each region, the severity score is calculated as the sum of the intensity scores (scored as none \[0\], mild \[1\], moderate \[2\], or severe \[3\]) for redness (erythema, inflammation), thickness (induration, papulation, swelling - acute eczema), scratching (excoriation), and lichenification (lined skin, prurigo nodules - chronic eczema). The total EASI score for each region is calculated by multiplying the severity score by the area score, with adjustment for the proportion of the body region to the whole body. The final EASI score is the sum of the 4 region scores and ranges from 0 to 72 where higher scores represent worse disease.
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Time frame: Week 4,8
Percentage of Participants Achieving a Reduction of ≥ 3 Points From Baseline in Worst Pruritus Numerical Rating Scale (NRS)
Participants were asked to rate itch (pruritus) intensity at its worst during the past 24 hours on a daily basis using an 11-point scale from 0 (no itch) to 10 (worst imaginable itch). Pruritus NRS was analyzed based on weekly rolling averages of daily scores.
Time frame: Week 4,8,12
Change From Baseline in Worst Pruritus Numerical Rating Scale(NRS) Score
Participants were asked to rate itch (pruritus) intensity at its worst during the past 24 hours on a daily basis using an 11-point scale from 0 (no itch) to 10 (worst imaginable itch). Pruritus NRS was analyzed based on weekly rolling averages of daily scores.
Time frame: Week 4,8,12
Percentage of Participants Achieving a Reduction of ≥ 2 Points From Baseline in Investigator Global Assessment (IGA)
IGA is a validated assessment instrument to rate the severity of atopic dermatitis globally, based on the following scale: 0 - Clear: No inflammatory signs of AD; 1. \- Almost clear: Barely perceptible erythema, induration/papulation and/or lichenification; 2. \- Mild: Slight but definite erythema, induration/papulation and/or minimal lichenification. No oozing or crusting; 3. \- Moderate: Clearly perceptible erythema, induration/papulation and/or lichenification, oozing or crusting may be present; 4. \- Severe: Marked erythema, induration/papulation and/or lichenification; Oozing or crusting may be present.
Time frame: Week 4,8,12
Percentage of Participants Who Achieved a 90% Reduction in EASI Score (EASI 90)
An EASI 90 response is defined as participants with at least a 90% reduction (improvement) in EASI score relative to the Baseline value
Time frame: Week 4,8,12
Percentage of Participants Who Achieved a 50% Reduction in EASI Score (EASI 50)
An EASI 50 response is defined as participants with at least a 50% reduction (improvement) in EASI score relative to the Baseline value
Time frame: Week 4,8,12
Percent Change from Baseline in Scoring Atopic Dermatitis (SCORAD) Score
SCORAD is a clinical tool used to assess the extent and severity of eczema (SCORing Atopic Dermatitis). The extent is assessed using the rule of 9 to calculate the affected area (A) as a percentage of the whole body (0-100%). The intensity part of the SCORAD (B) consists of 6 items: erythema, oedema/papulation, excoriations, lichenification, oozing/crusts and dryness, each graded on a scale from 0 (none) to 3 (severe), for a total score of 0 to 18. Subjective items (C) include daily pruritus and sleeplessness, each scored on a visual analogue scale (VAS) from 0 to 10 (total score 0-20). SCORAD is calculated as A/5 + 7B/2 + C, and ranges from 0 to 103 (worst). A negative change from Baseline indicates improvement.
Time frame: Week 4,8,12
Change From Baseline in Dermatology Life Quality Index (DLQI) Score
The DLQI is a 10-item validated questionnaire used to assess the impact of AD disease symptoms and treatment on quality of life (QoL). It consists of 10 questions evaluating impact of skin diseases on different aspects of a participant's QoL over the prior week, including symptoms and feelings, daily activities, leisure, work or school, personal relationships, and the side effects of treatment. Each item is scored on a 4-point scale (0 = not at all/not relevant; 1 = a little; 2 = a lot; and 3 = very much). Item scores are added to provide a total score, ranging from 0 to 30, with higher scores indicating greater impairment of QoL.
Time frame: Week 4,8,12
Change From Baseline in Patient Oriented Eczema Measure (POEM) Score
The POEM is a 7-item, validated questionnaire used to assess disease symptoms in both children and adults. Participants respond to 7 questions, including dryness, itching, flaking, cracking, sleep loss, bleeding, and weeping, each scored on a 5-point scale based on frequency of occurrence during the previous week: 0 = no days, 1 = 1 to 2 days, 2 = 3 to 4 days, 3 = 5 to 6 days, and 4 = all days. Item scores are added to provide a total score ranging from 0 (clear) to 28 (very severe atopic eczema). A change in POEM score of 3.4 points is considered the minimal clinically important difference.
Time frame: Week 4,8,12