A Study of Lebrikizumab (LY3650150) in Participants With Moderate-to-Severe Atopic Dermatitis

The EASI assesses objective physician estimates of 2 dimensions of atopic dermatitis - 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). Least Square (LS) Means were calculated using analysis of covariance (ANCOVA) with the factor of treatment and the baseline EASI as covariate. Note: Missing values were imputed using Markov Chain Monte Carlo (MCMC) multiple imputation.

Time frame: Baseline, Week 16

Population: All randomized participants who received at least one dose of study drug and had Week 16 EASI data.

The ADIQ is a 17-item questionnaire used to assess the participant's AD-specific health-related quality of life. Each item is rated on a 5-point scale from 0 to 4, with higher numbers indicating greater burden. The questionnaire assesses AD's impact on emotions, energy, activities of daily living, and social activities. The ADIQ has a recall specification of 7 days. Assessments were recorded by the participant using an electronic diary and transferred to the clinical database.The ADIQ score is calculated by summing the score of each of the 14 questions resulting in a maximum of 56 and a minimum of 0, with higher scores indicating greater burden.

Time frame: Baseline, Week 16

Population: All randomized participants who received at least one dose of study drug and had evaluable Week 16 ADIQ data.

The body surface area (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.

Time frame: Baseline, Week 16

Population: All randomized participants who received at least one dose of study drug and had Week 16 BSA data.

The EASI assesses objective physician estimates of 2 dimensions of atopic dermatitis - 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 responder is defined as a participant who achieves a ≥ 50% improvement from baseline in the EASI score.

Time frame: Week 16

Population: All randomized participants who received at least one dose of study drug.

The EASI assesses objective physician estimates of 2 dimensions of atopic dermatitis - 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 responder is defined as a participant who achieves a ≥ 90% improvement from baseline in the EASI score

Time frame: Week 16

Population: All randomized participants who received at least one dose of study drug.

The EASI assesses objective physician estimates of 2 dimensions of atopic dermatitis - 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 responder is defined as a participant who achieves a ≥ 75% improvement from baseline in the EASI score.

Time frame: Week 16

Population: All randomized participants who received at least one dose of study drug.

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.

Time frame: Week 16

Population: All randomized participants who received at least one dose of study drug.

The EASI assesses objective physician estimates of 2 dimensions of atopic dermatitis - 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).

Time frame: Week 16

Population: All randomized participants who received at least one dose of study drug.

The Pruritus NRS is an 11-point scale used by participants to assess their worst itch severity over the past 24 hours, with 0 indicating no itch and 10 indicating worst itch imaginable. Assessments were recorded daily by the participant using an electronic diary. The percentage of participants who are dichotomized to success (pruritus NRS greater than or equal to 3-point improvement) at Week 16 will be analyzed using a Cochran-Mantel-Haenszel (CMH) test.

Time frame: Week 16

Population: All randomized participants who received at least one dose of study drug and had a \>=3 point improvement from Baseline in Week 16 Pruritus NRS score.

The Pruritus NRS is an 11-point scale used by participants to assess their worst itch severity over the past 24 hours, with 0 indicating no itch and 10 indicating worst itch imaginable. Assessments were recorded daily by the participant using an electronic diary. The percentage of participants who are dichotomized to success (pruritus NRS greater than or equal to 4-point improvement) at Week 16 will be analyzed using a Cochran-Mantel-Haenszel (CMH) test.

Time frame: Week 16

Population: All randomized participants who received at least one dose of study drug and had a \>=4 point improvement from Baseline in Week 16 Pruritus NRS score.

The Pruritus NRS is an 11-point scale used by participants to assess their worst itch severity over the past 24 hours, with 0 indicating no itch and 10 indicating worst itch imaginable. Pruritus assessments were recorded daily by the participant using an electronic diary. LS Means were calculated using ANCOVA with the factor of treatments and the baseline pruritus NRS as covariates.

Time frame: Baseline, Week 16

Population: All randomized participants who received least one dose of study drug and had Week 16 Pruritus NRS score.

The Sleep Loss Scale is used by the participants to report the impact of itching on their sleep every night. Participants responded to the question to what extent did your itching interfere with your sleep last night. The scale ranged from 0 to 4, with 0 (not at all) to 4 (unable to sleep at all). Higher scores indicated a greater impact and worse outcome. Assessments were recorded daily by the participant using an electronic diary. Least Squares (LS) Means were calculated using ANCOVA with the factor of treatment and the baseline sleep-loss scale as covariates.

Time frame: Baseline, Week 16

Population: All randomized participants who received at least one dose of study drug and had Week 16 Sleep Loss Scale score.