A Study of Baricitinib (LY3009104) in Adults With Severe or Very Severe Alopecia Areata

SALT uses a visual aid showing the division of the scalp hair into 4 areas with the top of the head constituting 40% of total surface, the posterior/back of head 24%, right side and left side of head 18% each. The percentage of hair loss in each area is determined and is multiplied by the percentage of scalp covered by that area. The total sum of the 4 products of each area will give the SALT score. Only terminal hair is included in the SALT; vellus hair or any fine downy hair is not taken into account in the SALT scoring process. The SALT score will range from 0% to 100%, with lower score indicating better health outcomes. Least Squares Mean (LSM) was calculated using analysis of covariance (ANCOVA) with geographic region duration of current episode at baseline (< 4 years versus ≥4 years), treatment group, and baseline value in the model.

SALT uses a visual aid showing the division of the scalp hair into 4 areas with the top of the head constituting 40% of total surface, the posterior/back of head 24%, right side and left side of head 18% each. The percentage of hair loss in each area is determined and is multiplied by the percentage of scalp covered by that area. The total sum of the 4 products of each area will give the SALT score, as developed by the National Alopecia Areata Foundation Working Committee. Only terminal hair is included in the SALT; vellus hair or any fine downy hair is not taken into account in the SALT scoring process. The SALT score will range from 0% to 100%, with lower score indicating better health outcomes. SALT50 indicates at least a 50 % improvement from baseline in the SALT score.

PRO is an assessment of the particpant's current extent of scalp involvement. It is comprised of 5 category response options: 0= No missing hair (0% of my scalp is missing hair; I have a full head of hair); 1 = A limited area (1% to 20% of my scalp is missing hair); 2 = A moderate area (21% to 49% of my scalp is missing hair); 3 = A large area (50% to 94% of my scalp is missing hair); and 4 = Nearly all or all (95% to 100% of my scalp is missing hair).

The SALT uses a visual aid showing the division of the scalp hair into 4 areas with the top of the head constituting 40% of total surface, the posterior/back of head 24%, right side and left side of head 18% each. The percentage of hair loss in each area is determined and is multiplied by the percentage of scalp covered by that area. The total sum of the 4 products of each area will give the SALT score, as developed by the National Alopecia Areata Foundation Working Committee. Only terminal hair is included in the SALT; vellus hair or any fine downy hair is not taken into account in the SALT scoring process. The SALT score will range from 0% to 100%, with lower score indicating better health outcomes. Kaplan-Meier method was used for analysis. Time for participants to achieve salt ≤ 20 at week 36 were reported in this outcome measure.

ClinRO is a clinician reported assessment which measures a participant's EB hair loss. It is comprised of 4 category response options: 0 = EB have full coverage and no areas of hair loss; 1 = There are minimal gaps in EB hair and distribution is even; 2 = There are significant gaps in EB hair or distribution is not even; 3 = No notable EB.

ClinRO measure for EL hair loss is comprised of 4 category response options: 0 = The EL form a continuous line along the eyelids on both eyes; 1 = There are minimal gaps and the EL are evenly spaced along the eyelids on both eyes; 2 = There are significant gaps along the eyelids or the EL are not evenly spaced along the eyelids; 3 = No notable EL.

PRO is an assessment of the participant's current appearance of eyebrows. It is comprised of 4 category response options: 0 = I have full EB on each eye; 1= I have a minimal gap(s) or a minimal amount of thinning in at least 1 of my EB; 2 = I have a large gap(s) or a large amount of thinning in at least 1 of my EB; and 3 = I have no or barely any EB hairs.

PRO assessment of the participant's current appearance of EL. It is comprised of 4 category response options: 0 = I have full EL on each eyelid; 1 = I have a minimal gap or minimal gaps along the eyelids; 2 = I have a large gap or large gaps along the eyelids; and 3 = I have no or barely any EL hair.

Skindex-16 AA was adapted from Skindex-16 for use among adults with alopecia areata. It examines the degree to which the participant is bothered by alopecia (hair loss) and associated symptoms. It is composed of 16 items grouped under 3 domains: Symptoms (4 items), Emotions (7 items), and Functioning (5 items). The score of each item ranges from 0 (never bothered) to 6 (always bothered). Symptoms domain score is sum of 4 items, range 0 to 24; Emotions domain score is sum of 7 items, range 0 to 42; Functioning score is sum of 5 items, range 0 to 30. Higher scores indicate a greater impact on quality of life.

LS means was calculated using the ANCOVA model with geographic region, duration of current episode at Baseline (<4 years vs. ≥ 4years), treatment group, and baseline value as fixed factors.

Skindex-16 AA was adapted from Skindex-16 for use among adults with alopecia areata. It examines the degree to which the participant is bothered by alopecia (hair loss) and associated symptoms. It is composed of 16 items grouped under 3 domains: Symptoms (4 items), Emotions (7 items), and Functioning (5 items). The score of each item ranges from 0 (never bothered) to 6 (always bothered). Symptoms domain score is sum of 4 items, range 0 to 24; Emotions domain score is sum of 7 items, range 0 to 42; Functioning score is sum of 5 items, range 0 to 30. Higher scores indicate a greater impact on quality of life.

LS means was calculated using the ANCOVA model with geographic region, duration of current episode at Baseline (<4 years vs. ≥ 4years), treatment group, and baseline value as fixed factors.

Skindex-16 AA was adapted from Skindex-16 for use among adults with alopecia areata. It examines the degree to which the participant is bothered by alopecia (hair loss) and associated symptoms. It is composed of 16 items grouped under 3 domains: Symptoms (4 items), Emotions (7 items), and Functioning (5 items). The score of each item ranges from 0 (never bothered) to 6 (always bothered). Symptoms domain score is sum of 4 items, range 0 to 24; Emotions domain score is sum of 7 items, range 0 to 42; Functioning score is sum of 5 items, range 0 to 30. Higher scores indicate a greater impact on quality of life.

LS means was calculated using the ANCOVA model with geographic region, duration of current episode at Baseline (<4 years vs. ≥ 4years), treatment group, and baseline value as fixed factors.

The HADS is a 14-item self-assessment scale that determines the levels of anxiety and depression that a patient is experiencing over the past week. The HADS utilizes a 4-point Likert scale (for example, 0 to 3) for each question and is intended for ages 12 to 65 years. Scores for each domain (anxiety and depression) can range from 0 to 21, with higher scores indicating greater anxiety or depression.

LS mean was calculated using an ANCOVA model which includes geographic region, duration of current episode at baseline (<4 years vs. ≥4 years), treatment group and baseline score as fixed factors.

The HADS is a 14-item self-assessment scale that determines the levels of anxiety and depression that a patient is experiencing over the past week. The HADS utilizes a 4-point Likert scale (for example, 0 to 3) for each question and is intended for ages 12 to 65 years. Scores for each domain (anxiety and depression) can range from 0 to 21, with higher scores indicating greater anxiety or depression.

LS mean was calculated using an ANCOVA model which includes geographic region, duration of current episode at baseline (<4 years vs. ≥4 years), treatment group and baseline score as fixed factors.