A Study of LY3375880 in Adults With Moderate-to-Severe Atopic Dermatitis

Percentage of Participants Achieving vIGA-AD of 0

vIGA-AD measures participants overall severity of their atopic dermatitis (AD), based on a static, numeric 5 point scale from 0 (clear) to 4 (severe). Higher scores indicate greater severity. The score is based on an overall assessment of the degree of erythema, papulation/induration, oozing/crusting, and lichenification. Non-responder imputation (NRI) method was used to impute missing data.

Time frame: Week 16

Mean Change From Baseline in Eczema Area and Severity Index (EASI) Score

EASI assesses objective physician estimates of 2 dimensions of atopic dermatitis-disease extent and clinical signs-by scoring the extent of disease(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 (erythema,edema/papulation,excoriation,and lichenification) each on a scale of 0 to 3 (0 = none, absent; 1 =mild; 2 = moderate; 3=severe) at 4 body sites(head and neck,trunk,upper limbs,and lower limbs).Half scores are allowed.Each body site will have a score that ranges from 0 to 72,and the final EASI score will be obtained by weight-averaging these 4 scores.Hence,the final EASI score will range from 0 to 72(severe) for each time point.Higher scores indicate greater severity.Least Squares Mean(LS Means) were calculated using mixed model repeated measures(MMRM) with treatment,region, baseline disease severity,visit,treatment-by-visit-interaction,baseline and baseline-by-visit-interaction as fixed effects.

Time frame: Baseline, Week 16

Mean Change From Baseline in SCORAD

The SCORAD index uses the rule of nines to assess disease extent (head and neck 9%;upper limbs 9% each;lower limbs 18% each;anterior trunk 18%;back 18%;and genitals 1%).It evaluates 6 clinical characteristics to determine disease severity: (1)erythema,(2)edema/papulation, (3)oozing/crusts,(4) excoriation,(5) lichenification, and (6) dryness on a scale of 0 to 3(0=absence,1=mild,2=moderate,3=severe).The SCORAD index also assesses subjective symptoms of pruritus and sleep loss in the last 72 hours on visual analogue scales(VAS) of 0 to 10 where 0 is no itch or sleep loss and 10 is worst imaginable itch or sleep loss.These 3 aspects: extent of disease,disease severity,and subjective symptoms combine to give a score between 0(no disease) and 103(severe disease).Higher scores indicate greater severity. LS Means were calculated using a MMRM model with treatment,region,baseline disease severity,visit, treatment-by-visit-interaction,baseline and baseline-by-visit-interaction as fixed effects.

Time frame: Baseline, Week 16

Percentage of Participants Achieving vIGA-AD of 0 or 1 With a >=2-point Improvement at Week 52

vIGA-AD measures participants overall severity of their atopic dermatitis (AD), based on a static, numeric 5 point scale from 0 (clear) to 4 (severe). Higher scores indicate greater severity. The score is based on an overall assessment of the degree of erythema, papulation/induration, oozing/crusting, and lichenification. Non-responder imputation (NRI) method was used to impute missing data.

Time frame: Week 52

Pharmacokinetics (PK): Area Under the Concentration Versus Time Curve at a Steady State (AUCτ,ss) of LY3375880

Pharmacokinetics (PK): Area Under the Concentration Versus Time Curve at a steady state (AUCτ,ss) of LY3375880. The PK model was fit using all quantifiable concentrations that were collected in the study (i.e., from the induction and maintenance periods).

Time frame: Induction Period: Pre-dose, Day 0, Day 7, Day 14, Day 28, Day 56, Day 112 Post-dose; Maintenance Period:Predose, Day 168; Day 252, Day 364 Post-dose