Evaluation of the Efficacy and Safety of Lebrikizumab (LY3650150) in Moderate to Severe Atopic Dermatitis

The IGA measures the investigator's global assessment of the participant's overall severity of their AD, based on a static, numeric 5-point scale from 0 (clear skin) to 4 (severe disease). The score is based on an overall assessment of the degree of erythema, papulation/induration, oozing/crusting, and lichenification.

The IGA measures the investigator's global assessment of the participant's overall severity of their AD, based on a static, numeric 5-point scale from 0 (clear skin) to 4 (severe disease). The score is based on an overall assessment of the degree of erythema, papulation/induration, oozing/crusting, and lichenification.

The IGA measures the investigator's global assessment of the participant's overall severity of their AD, based on a static, numeric 5-point scale from 0 (clear skin) to 4 (severe disease). The score is based on an overall assessment of the degree of erythema, papulation/induration, oozing/crusting, and lichenification.

The EASI assesses objective physician estimates of 2 dimensions of AD - disease extent and clinical signs affected: 0 = 0%; 1 = 1-9%; 2 = 10-29%; 3 = 30-49%; 4 = 50-69%; 5 = 70-89%; 6 = 90-100% and the severity of 4 clinical signs: (1) erythema, (2) edema/papulation, (3) excoriation, and (4) lichenification each on a scale of 0 to 3 (0 = none, absent; 1 = mild; 2 = moderate; 3 = severe) at 4 body sites (head/neck, trunk, upper limbs, and lower limbs). Half scores are allowed between severities 1, 2, and 3. The final EASI score was obtained by weight-averaging these 4 scores and will range from 0 to 72 (severe).

The EASI-90 responder is defined as a participant who achieves a ≥ 90% reduction from baseline in the EASI score.

Pruritus NRS is an 11-point scale used by participants to rate their worst itch severity over the past 24 hours with 0 indicating "No itch" and 10 indicating "Worst itch imaginable." Least Squares (LS) Mean was calculated using analysis of covariance (ANCOVA) model with treatment and randomization strata (region, disease severity, age) as fixed factors and baseline value as covariate.

Pruritus NRS is an 11-point scale used by participants to rate their worst itch severity over the past 24 hours with 0 indicating "No itch" and 10 indicating "Worst itch imaginable."

Pruritus NRS is an 11-point scale used by participants to rate their worst itch severity over the past 24 hours with 0 indicating "No itch" and 10 indicating "Worst itch imaginable."

The EASI assesses objective physician estimates of 2 dimensions of AD - disease extent and clinical signs affected: 0 = 0%; 1 = 1-9%; 2 = 10-29%; 3 = 30-49%; 4 = 50-69%; 5 = 70-89%; 6 = 90-100% and the severity of 4 clinical signs: (1) erythema, (2) edema/papulation, (3) excoriation, and (4) lichenification each on a scale of 0 to 3 (0 = none, absent; 1 = mild; 2 = moderate; 3 = severe) at 4 body sites (head/neck, trunk, upper limbs, and lower limbs). Half scores are allowed between severities 1, 2, and 3. The final EASI score was obtained by weight-averaging these 4 scores and will range from 0 to 72 (severe).

LS Mean was calculated using ANCOVA model with treatment, stratification factors of geographic region, age group, baseline IGA score (IGA 3 versus 4) as fixed factors baseline value as covariate.

The BSA affected by AD will be assessed for 4 separate body regions: head and neck, trunk (including genital region), upper extremities, and lower extremities (including the buttocks). Each body region will be assessed for disease extent ranging from 0% to 100% involvement. BSA was calculated using the participant's palm using the 1% rule, 1 palm was equivalent to 1% with estimates of the number of palms it takes to cover the affected AD area. Maximum number of palms were 10 palms for head and neck (10%), 20 palms for upper extremities (20%), 30 palms for trunk, including axilla and groin (30%), 40 palms for lower extremities, including buttocks (40%). Percent of BSA for a body region was calculated as = total number of palms in a body region * % surface area equivalent to 1 palm. Overall percent BSA of all 4 body regions ranges from 0% to 100 % with higher values representing greater severity of AD.

The EASI assesses objective physician estimates of 2 dimensions of AD - disease extent and clinical signs affected: 0 = 0%; 1 = 1-9%; 2 = 10-29%; 3 = 30-49%; 4 = 50-69%; 5 = 70-89%; 6 = 90-100% and the severity of 4 clinical signs: (1) erythema, (2) edema/papulation, (3) excoriation, and (4) lichenification each on a scale of 0 to 3 (0 = none, absent; 1 = mild; 2 = moderate; 3 = severe) at 4 body sites (head/neck, trunk, upper limbs, and lower limbs). Half scores are allowed between severities 1, 2, and 3. The final EASI score was obtained by weight-averaging these 4 scores and will range from 0 to 72 (severe).

The EASI-90 responder is defined as a participant who achieves a ≥ 90% reduction from baseline in the EASI score.

The DLQI is a 10-item, validated questionnaire used to assess the impact of skin disease on the quality of life of an affected person. The 10 questions cover the following topics: symptoms, embarrassment, shopping and home care, clothes, social and leisure, sport, work or study, close relationships, sex, and treatment, over the previous week. Response categories include "Not at all," "A little," "A lot," and "Very much," with corresponding scores of 0, 1, 2, and 3 respectively. Questions 3-10 also have an additional response category of "Not relevant" which is scored as "0". Questions are scored from 0 to 3, giving a possible total score range from 0 (no impact of skin disease on quality of life) to 30 (maximum impact on quality of life). A high score is indicative of a poor quality of life.

LS Mean was calculated using the ANCOVA model with treatment, baseline value, and stratification factors of geographic region, age group, baseline IGA (3 versus 4) score as fixed factors.

The DLQI is a 10-item, validated questionnaire used to assess the impact of skin disease on the quality of life of an affected person. The 10 questions cover the following topics: symptoms, embarrassment, shopping and home care, clothes, social and leisure, sport, work or study, close relationships, sex, and treatment, over the previous week. Response categories include "Not at all," "A little," "A lot," and "Very much," with corresponding scores of 0, 1, 2, and 3 respectively. Questions 3-10 also have an additional response category of "Not relevant" which is scored as "0". Questions are scored from 0 to 3, giving a possible total score range from 0 (no impact of skin disease on quality of life) to 30 (maximum impact on quality of life). A high score is indicative of a poor quality of life.

The DLQI is a 10-item, validated questionnaire used to assess the impact of skin disease on the quality of life of an affected person. The 10 questions cover the following topics: symptoms, embarrassment, shopping and home care, clothes, social and leisure, sport, work or study, close relationships, sex, and treatment, over the previous week. Response categories include "Not at all," "A little," "A lot," and "Very much," with corresponding scores of 0, 1, 2, and 3 respectively. Questions 3-10 also have an additional response category of "Not relevant" which is scored as "0". Questions are scored from 0 to 3, giving a possible total score range from 0 (no impact of skin disease on quality of life) to 30 (maximum impact on quality of life). A high score is indicative of a poor quality of life.

Sleep Loss due to interference of itch will be assessed by the participant. Participants rate their interference of itch on sleep based on a 5-point Likert scale [0 (not at all) to 4 (unable to sleep at all)]. Higher scores indicated a greater impact and worse outcome. Assessments will be recorded daily by the participant using an electronic diary. LS Mean was calculated using ANCOVA model with treatment, baseline value, and stratification factors of geographic region, age group, baseline IGA (3 versus 4) score as fixed factors.

Sleep Loss due to interference of itch will be assessed by the participant. Participants rate their interference of itch on sleep based on a 5-point Likert scale [0 (not at all) to 4 (unable to sleep at all)]. Higher scores indicated a greater impact and worse outcome. Assessments will be recorded daily by the participant using an electronic diary. LS Mean was calculated using ANCOVA model with treatment, baseline value, and stratification factors of geographic region, age group, baseline IGA (3 versus 4) score as fixed factors.

Sleep Loss due to interference of itch will be assessed by the participant. Participants rate their interference of itch on sleep based on a 5-point Likert scale [0 (not at all) to 4 (unable to sleep at all)]. Higher scores indicated a greater impact and worse outcome. Assessments will be recorded daily by the participant using an electronic diary.

Pruritus NRS is an 11-point scale used by participants to rate their worst itch severity over the past 24 hours with 0 indicating "No itch" and 10 indicating "Worst itch imaginable."

Pruritus NRS is an 11-point scale used by participants to rate their worst itch severity over the past 24 hours with 0 indicating "No itch" and 10 indicating "Worst itch imaginable."

Pruritus NRS is an 11-point scale used by participants to rate their worst itch severity over the past 24 hours with 0 indicating "No itch" and 10 indicating "Worst itch imaginable."

Pruritus NRS is an 11-point scale used by participants to rate their worst itch severity over the past 24 hours with 0 indicating "No itch" and 10 indicating "Worst itch imaginable."

Pruritus NRS is an 11-point scale used by participants to rate their worst itch severity over the past 24 hours with 0 indicating "No itch" and 10 indicating "Worst itch imaginable."

Pruritus NRS is an 11-point scale used by participants to rate their worst itch severity over the past 24 hours with 0 indicating "No itch" and 10 indicating "Worst itch imaginable."

SCORAD is validated tool for assessing the extent and intensity of AD, it consists of 3 components: A=extent of AD as a percentage of each defined body area and reported as sum of all areas, with maximum score of 100%. B=severity of 6 specific symptoms of AD (redness, swelling, oozing/crusting, excoriation, skin thickening/lichenification, dryness) assessed using following scale: none=0, mild=1, moderate=2, or severe=3 for maximum of 18 total points. C=subjective assessment of itch and sleeplessness recorded by participant on visual analog scale (VAS), where 0=no itch/no sleeplessness and 10=worst imaginable itch/sleeplessness with maximum score of 20. SCORAD total score is calculated: A/5+7*B/2+ C to give total score range of 0 to 103, where 0=no disease to 103=severe disease. LS Mean was calculated using ANCOVA model with treatment group and stratification factors of geographic region, age group, baseline IGA (3 versus 4) score as fixed factors and baseline value as covariate.

C-trough was the concentration of study drug in the blood immediately before the next dose was administered. Trough serum concentration of Lebrikizumab was assessed at predose week 52.

The EASI assesses objective physician estimates of 2 dimensions of AD - disease extent, i.e., percentage of skin affected: 0 = 0%; 1 = 1-9%; 2 = 10-29%; 3 = 30-49%; 4 = 50-69%; 5 = 70-89%; 6 = 90-100% and the severity of 4 clinical signs: (1) erythema, (2) edema/papulation, (3) excoriation, and (4) lichenification each on a scale of 0 to 3 (0 = none, absent; 1 = mild; 2 = moderate; 3 = severe) at 4 body sites (head/neck, trunk, upper limbs, and lower limbs). Half scores are allowed between severities 1, 2, and 3. The final EASI-75 score was obtained by weight-averaging these 4 scores and will range from 0 (none) to 72 (severe).

The EASI-75 responder is defined as a participant who achieves a ≥ 75% reduction from baseline in the EASI score.

The IGA measures the investigator's global assessment of the participant's overall severity of their AD, based on a static, numeric 5-point scale from 0 (clear skin) to 4 (severe disease). The score is based on an overall assessment of the degree of erythema, papulation/induration, oozing/crusting, and lichenification.

Pruritus NRS is an 11-point scale used by participants to rate their worst itch severity over the past 24 hours with 0 indicating "No itch" and 10 indicating "Worst itch imaginable."

Pruritus NRS is an 11-point scale used by participants to rate their worst itch severity over the past 24 hours with 0 indicating "No itch" and 10 indicating "Worst itch imaginable."

SCORAD is a validated tool for assessing the extent and intensity of AD, it consists of 3 components: A=extent of AD as a percentage of each defined body area and reported as sum of all areas, with maximum score of 100%. B=severity of 6 specific symptoms of AD (redness, swelling, oozing/crusting, excoriation, skin thickening/lichenification, dryness) assessed using following scale: none=0, mild=1, moderate=2, or severe=3 for maximum of 18 total points. C=subjective assessment of itch and sleeplessness recorded by participant on VAS, where 0=no itch/no sleeplessness and 10=worst imaginable itch/sleeplessness with maximum score of 20. SCORAD total score is calculated: A/5+7*B/2+ C to give total score range of 0 to 103, where 0=no disease to 103=severe disease. LS Mean was calculated using ANCOVA model with treatment group and stratification factors of geographic region, age group, baseline IGA (3 versus 4) score as fixed factors and baseline value as covariate.

The European Quality of Life-5 Dimensions-5 Level (EQ-5D-5L) is a is a 2-part questionnaire which measure health status of the participant. The first component (Health state) is a descriptive system of the respondent's health comprised of the following 5 participant-reported dimensions: mobility, self-care, usual activities, pain/discomfort, and anxiety/depression. Each dimension has 5 levels: no problems, slight problems, moderate problems, severe problems, and extreme problems. The responses are used to derive the health state index scores using the United Kingdom (UK) algorithm, with scores ranging from -0.594 to 1, and the United States (US) algorithm, with scores ranging from -0.109 to 1. A higher score indicates better health state.

LS Mean was calculated using the ANCOVA model with treatment and stratification factors of geographic region, age group, baseline IGA (3 versus 4) score as fixed factors and baseline value as covariate.

The EQ-5D-5L is a 2-part measurement. The second part is assessed using a VAS that ranged from 0 to 100 millimeter (mm), where 0 is the worst health you can imagine and 100 is the best health you can imagine. LS Mean was calculated using the ANCOVA model with treatment and stratification factors of geographic region, age group, baseline IGA (3 versus 4) score as fixed factors and baseline value as covariate.

POEM is a 7-item, validated, questionnaire used by the participant to assess disease symptoms over the last week. The participant is asked to respond to 7 questions on skin dryness, itching, flaking, cracking, sleep loss, bleeding and weeping. All 7 answers carry equal weight with a total possible score from 0 to 28 (answers scored as: No days=0; 1-2 days = 1; 3-4 days = 2; 5-6 days = 3; everyday = 4). A high score is indicative of a poor quality of life. POEM responses will be captured using an electronic diary and transferred into the clinical database. LS Mean was calculated using MMRM model using treatment, baseline value, visit, the interaction of the baseline value-by-visit, the interaction of treatment by-visit as covariates, geographic region, age group, baseline IGA (3 versus 4) score as fixed.

PROMIS® is a set of person-centered measures that evaluates and monitors physical, mental, and social health in adults and children. Participants ≤17 years will complete pediatric versions for the duration of the study. PROMIS anxiety has 8 questions on Emotion Distress-Anxiety (or Pediatric Anxiety Symptom). Each question has 5 response options with values from 1 to 5. Total raw scores were converted to T-Scores (mean = 50 and a standard deviation = 10) with higher scores representing greater anxiety. LS Mean was calculated using the ANCOVA model with treatment and stratification factors of geographic region, age group, baseline IGA (3 versus 4) score as fixed factors and baseline value as covariate.

PROMIS® is a set of person-centered measures that evaluates and monitors physical, mental, and social health in adults and children. Participants ≤17 years will complete pediatric versions for the duration of the study. PROMIS anxiety has 8 questions on Emotion Distress-Anxiety (or Pediatric Anxiety Symptom). Each question has 5 response options with values from 1 to 5. Total raw scores were converted to T-Scores (mean = 50 and a standard deviation = 10) with higher scores representing greater anxiety. LS Mean was calculated using the ANCOVA model with treatment and stratification factors of geographic region, age group, baseline IGA (3 versus 4) score as fixed factors and baseline value as covariate.

PROMIS® is a set of person-centered measures that evaluates and monitors physical, mental, and social health in adults and children. Participants ≤17 years will complete pediatric versions for the duration of the study. PROMIS anxiety has 8 questions on Emotion Distress-Anxiety (or Pediatric Anxiety Symptom). Each question has 5 response options with values from 1 to 5. Total raw scores were converted to T-Scores (mean = 50 and a standard deviation = 10) with higher scores representing greater anxiety. LS Mean was calculated using the ANCOVA model with treatment and stratification factors of geographic region, age group, baseline IGA (3 versus 4) score as fixed factors and baseline value as covariate.

PROMIS® is a set of person-centered measures that evaluates and monitors physical, mental, and social health in adults and children. Participants ≤17 years will complete pediatric versions for the duration of the study. PROMIS anxiety has 8 questions on Emotion Distress-Anxiety (or Pediatric Anxiety Symptom). Each question has 5 response options with values from 1 to 5. Total raw scores were converted to T-Scores (mean = 50 and a standard deviation = 10) with higher scores representing greater anxiety. LS Mean was calculated using the ANCOVA model with treatment and stratification factors of geographic region, age group, baseline IGA (3 versus 4) score as fixed factors and baseline value as covariate.

The ACQ-5 is a five-item, self-completed questionnaire, which is used as a measure of asthma control of a participant. The five questions (concerning nocturnal awakening, waking in the morning, activity limitation, shortness of breath and wheeze) enquire about the frequency and/or severity of symptoms over the previous week. The response options for all these questions range from zero (no impairment/limitation) to six (total impairment/ limitation) scale. The ACQ-5 score is the average of the individual item scores and ranges from 0 (totally controlled) to 6 (severely uncontrolled). Higher scores indicate lower asthma control.

LS Mean was calculated using ANCOVA with treatment, geographic region, age group, baseline IGA (3 versus 4) score as fixed factors and baseline value as covariate.

The CDLQI questionnaire is designed for use in children (4 to 16 years of age). It consists of 10 items that are grouped into 6 domains: symptoms \& feelings, leisure, school or holidays, personal relationships, sleep, \& treatment. The scoring of each question is: Very much =3; Quite a lot = 2; Only a little = 1; Not at all = 0. CDLQI total score is calculated by summing all 10 items responses, and has a range of 0 to 30 (higher scores are indicative of greater impairment).

LS Mean was calculated using MMRM model which includes treatment, baseline value, visit, the interaction of the baseline value-by-visit as covariates, the interaction of treatment by-visit, geographic region, age group, and baseline IGA (3 versus 4) score as fixed factors.