Proportion of participants who achieve EASI75
Timeframe: Up to 8 weeks
Proportion of participants with a ≥ 4-point improvement in Itch Numerical Rating Scale (NRS) score
Timeframe: Up to 8 weeks
Proportion of participants with a clinically meaningful improvement in the Patient-Reported Outcomes Measurement Information System (PROMIS) Short Form – Sleep Disturbance (8b) 24-hour recall score
Timeframe: Up to 8 weeks
Participants with treatment-emergent adverse events (TEAEs)
Timeframe: Up to 52 weeks
Proportion of participants achieving an IGA-TS
Timeframe: From baseline up to 4 weeks
Proportion of participants achieving an IGA of 0 or 1 at each visit
Timeframe: Up to 8 weeks
Proportion of participants with a ≥ 4-point improvement in Itch NRS score
Timeframe: Up to 4 weeks
Proportion of participants who achieve EASI50 at each visit during the VC period.
Timeframe: Up to 8 weeks
Proportion of participants who achieve EASI75
Timeframe: Up to 4 weeks
Proportion of participants who achieve EASI90 at each visit during the VC period
Timeframe: Up to 8 weeks
Mean percentage change from baseline in EASI score at each visit during the VC period
Timeframe: From baseline up to 8 weeks
Mean percentage change from baseline in SCORAD score at each visit during the VC period
Timeframe: From baseline up to 8 weeks
Change from baseline in Itch NRS score at each visit during the VC period
Timeframe: From baseline up to 8 weeks
Time to achieve Itch NRS score improvement of at least 2, 3, or 4 points
Timeframe: Up to 8 weeks
Change from baseline in Skin Pain NRS score at each visit during the VC period
Timeframe: From baseline up to 8 weeks
Proportion of participants with a clinically meaningful improvement in the PROMIS Short Form – Sleep-Related Impairment (8a) 24-hour recall score
Timeframe: Up to 8 weeks
Change from baseline in PROMIS Short Form – Sleep Related Impairment (8a) 24-hour recall and Short Form – Sleep Disturbance (8b) 24-hour recall score
Timeframe: From baseline up to 8 weeks
PROMIS Short Form – Sleep-Related Impairment (8a) 7-day recall and Short Form – Sleep Disturbance (8b) 7-day recall score
Timeframe: Up to 52 weeks
Change from baseline in AD afflicted percentage of body surface area (%BSA) at every visit
Timeframe: From baseline up to 52 weeks
Change from baseline in Patient-Oriented Eczema Measure (POEM) score at each visit
Timeframe: From baseline up to 52 weeks
Change from baseline in Dermatology Life Quality Index (DLQI) score
Timeframe: From baseline up to 52 weeks
Mean Patient Global Impression of Change (PGIC) score
Timeframe: Up to 8 weeks
Proportion of participants with each score on the PGIC
Timeframe: Up to 8 weeks
Proportion of participants with a score of either 1 or 2 on the PGIC
Timeframe: Up to 8 weeks
Change from baseline in EQ-5D-5L score during the VC period
Timeframe: From baseline up to 8 weeks
Change from baseline in WPAI-SHP v2.0
Timeframe: From baseline up to 52 weeks
Trough plasma concentrations of ruxolitinib at all study visits
Timeframe: Up to 52 weeks