A Study to Evaluate Upadacitinib in Combination With Topical Corticosteroids in Adolescent and Adult Participants With Moderate to Severe Atopic Dermatitis

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: Baseline and Week 16

Population: The intent-to-treat population for the main study (ITT\_M) includes all participants who were randomized in the main study (adults and adolescents). Non-responder imputation incorporating multiple imputation to handle missing data due to coronavirus disease 2019 pandemic (COVID-19) (NRI-C) was used.~The pre-specified primary analysis included participants enrolled in the main study only; Efficacy analyses of adolescent participants were conducted separately and are reported below.

The vIGA-AD 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: Baseline and Week 16

Population: Intent-to-treat population for the main study; Non-responder imputation incorporating multiple imputation to handle missing data due to COVID-19 (NRI-C) was used.

EASI is used to measure the extent 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. and the severity score is calculated as the sum of the intensity scores (scored from 0 \[none\], to 3 \[severe\]) for redness, thickness, scratching, and lichenification. 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. An EASI 100 response is defined as a 100% reduction (improvement) from Baseline in EASI score. The percentage of participants with an EASI 100 response at Week 16 was pre-specified as a secondary endpoint for participants in the Upadacitinib 30 mg + TCS group versus Placebo + TCS group only.

Time frame: Baseline and Week 16

Population: Intent-to-treat population for adolescents; Non-responder imputation incorporating multiple imputation to handle missing data due to COVID-19 (NRI-C) was used.

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. An EASI 75 response is defined as at least a 75% reduction (improvement) from Baseline in EASI score.

Time frame: Baseline and Week 16

Population: The ITT population for adolescents (ITT\_A) consists of all adolescent participants who were randomized in the main study or the adolescent sub-study. Non-responder imputation incorporating multiple imputation to handle missing data due to COVID-19 (NRI-C) was used.

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. An EASI 75 response is defined as at least a 75% reduction (improvement) from Baseline in EASI score.

Time frame: Baseline and Week 2

Population: Intent-to-treat population for adolescents; Non-responder imputation incorporating multiple imputation to handle missing data due to COVID-19 (NRI-C) was used.

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. An EASI 75 response is defined as at least a 75% reduction (improvement) from Baseline in EASI score.

Time frame: Baseline and Week 4

Population: Intent-to-treat population for adolescents; Non-responder imputation incorporating multiple imputation to handle missing data due to COVID-19 (NRI-C) was used.

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. An EASI 90 response is defined as at least a 90% reduction (improvement) from Baseline in EASI score.

Time frame: Baseline and Week 16

Population: Intent-to-treat population for adolescents; Non-responder imputation incorporating multiple imputation to handle missing data due to COVID-19 (NRI-C) was used.

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. An EASI 90 response is defined as at least a 90% reduction (improvement) from Baseline in EASI score.

Time frame: Baseline and Week 4

Population: Intent-to-treat population for adolescents; Non-responder imputation incorporating multiple imputation to handle missing data due to COVID-19 (NRI-C) was used.

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). Worst pruritus NRS was analyzed based on weekly rolling averages of daily scores.

Time frame: Baseline (last available rolling average before the first dose of study drug) and Week 1

Population: Intent-to-treat population for adolescents with Worst Pruritus NRS (weekly average) ≥ 4 at Baseline; Non-responder imputation incorporating multiple imputation to handle missing data due to COVID-19 (NRI-C) was used.

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). Worst pruritus NRS was analyzed based on weekly rolling averages of daily scores.

Time frame: Baseline (last available rolling average before the first dose of study drug) and Week 16

Population: Intent-to-treat population for adolescents with Worst Pruritus NRS (weekly average) ≥ 4 at Baseline; Non-responder imputation incorporating multiple imputation to handle missing data due to COVID-19 (NRI-C) was used.

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). Worst pruritus NRS was analyzed based on weekly rolling averages of daily scores.

Time frame: Baseline (last available rolling average before the first dose of study drug) and Week 4

Population: Intent-to-treat population for adolescents with Worst Pruritus NRS (weekly average) ≥ 4 at Baseline; Non-responder imputation incorporating multiple imputation to handle missing data due to COVID-19 (NRI-C) was used.

The vIGA-AD is a validated assessment instrument to rate the severity of atopic dermatitis globally, based on the following scale: * 0 - Clear: No 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, possible oozing or crusting; * 4 - Severe: Marked erythema, induration/papulation and/or lichenification; possible oozing or crusting.

Time frame: Baseline and Week 16

Population: The ITT population for adolescents (ITT\_A) consists of all adolescent participants who were randomized in the main study or the adolescent sub-study. Non-responder imputation incorporating multiple imputation to handle missing data due to COVID-19 (NRI-C) was used.

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; a negative change from Baseline indicates improvement.

Time frame: Baseline and Week 16

Population: Intent-to-treat population for adolescents with non-missing Baseline and Week 16 values; missing data were handled using a mixed-effect model with repeated measurements including observed measurements at all visits, except that measurements after any rescue medication were excluded.

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. A negative change from Baseline indicates improvement.

Time frame: Baseline (last available rolling average before the first dose of study drug) and Week 16

Population: Intent-to-treat population for adolescents with non-missing Baseline and Week 16 values; missing data were handled using a mixed-effect model with repeated measurements including observed measurements at all visits, except that measurements after any rescue medication were excluded.

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 from 0 \[none\], to 3 \[severe\]) for redness, thickness, scratching, and lichenification. 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. The percentage of participants with an EASI 100 response at Week 16 was pre-specified as a ranked secondary endpoint for participants in the Upadacitinib 30 mg + Topical Corticosteroids group versus Placebo + Topical Corticosteroids group only.

Time frame: Baseline and Week 16

Population: Intent-to-treat population for the main study; Non-responder imputation incorporating multiple imputation to handle missing data due to COVID-19 (NRI-C) was used.

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: Baseline and Week 16

Population: Intent-to-treat population for the main study; Non-responder imputation incorporating multiple imputation to handle missing data due to COVID-19 (NRI-C) was used.

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. An EASI 75 response is defined as at least a 75% reduction (improvement) from Baseline in EASI score.

Time frame: Baseline and Week 2

Population: Intent-to-treat population for the main study; Non-responder imputation incorporating multiple imputation to handle missing data due to COVID-19 (NRI-C) was used.

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. An EASI 75 response is defined as at least a 75% reduction (improvement) from Baseline in EASI score.

Time frame: Baseline and Week 4

Population: Intent-to-treat population for the main study; Non-responder imputation incorporating multiple imputation to handle missing data due to COVID-19 (NRI-C) was used.

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: Baseline and Week 4

Population: Intent-to-treat population for the main study; Non-responder imputation incorporating multiple imputation to handle missing data due to COVID-19 (NRI-C) was used.

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: Baseline (last available rolling average before the first dose of study drug) and Week 1

Population: Intent-to-treat population for the main study with Worst Pruritus NRS (weekly average) ≥ 4 at Baseline; Non-responder imputation incorporating multiple imputation to handle missing data due to COVID-19 (NRI-C) was used.

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: Baseline (last available rolling average before the first dose of study drug) and Week 4

Population: Intent-to-treat population for the main study with Worst Pruritus NRS (weekly average) ≥ 4 at Baseline; Non-responder imputation incorporating multiple imputation to handle missing data due to COVID-19 (NRI-C) was used.

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: Baseline (last available rolling average before the first dose of study drug) and Week 16

Population: Intent-to-treat population for the main study with Worst Pruritus NRS (weekly average) ≥ 4 at Baseline; Non-responder imputation incorporating multiple imputation to handle missing data due to COVID-19 (NRI-C) was used.

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; a negative change from Baseline indicates improvement.

Time frame: Baseline and Week 16

Population: Intent-to-treat population for the main study with non-missing Baseline and Week 16 values; missing data were handled using a mixed-effect model with repeated measurements (MMRM) including observed measurements at all visits, except that measurements after any rescue medication were excluded.

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. A negative change from Baseline indicates improvement.

Time frame: Baseline (last available rolling average before the first dose of study drug) and Week 16

Population: Intent-to-treat population for the main study with non-missing Baseline and Week 16 values; missing data were handled using a mixed-effect model with repeated measurements (MMRM) including observed measurements at all visits, except that measurements after any rescue medication were excluded.