Outcome
| Type |
Measure |
Description |
Time frame |
Safety issue |
| Primary |
Change From Baseline in Urticaria Activity Score Over 7 Days (UAS7) at Week 16 |
The UAS is a CSU-specific patient-reported outcome measure with 2 components: Hives Severity Score (HSS) for number of wheals and an Itch Severity Score (ISS) for itch intensity, and are each scored from 0 (no wheals, no itch) to 3 (>50 wheals, severe itch) for the previous 24 hours. The HSS and ISS are combined to give a daily UAS ranging from 0 to 6. The sum of the daily UAS over a 7-day period provides the UAS7, from 0 (no symptoms) to 42 (severe urticaria). The least squares mean (LSM) estimates are based on the repeated measure model with stratification factor (prior anti-IgE status), baseline UAS7, treatment, study week and the interaction between treatment and study week. A negative change from baseline indicates an improvement in urticaria activity. |
Baseline and Week 16 |
|
| Secondary |
Change From Baseline in ISS Over 7 Days (ISS7) at Week 16 |
The ISS is a component of the UAS, a CSU-specific patient-reported outcome measure and assessed itch intensity, with daily scores ranging from 0 (no itch) to 3 (severe itch) for the previous 24 hours. The sum of daily ISS over a 7-day period provides the ISS7, from 0 (no symptoms) to 21 (severe itch). The LSM estimates are based on the repeated measure model with stratification factor (prior anti-IgE status), baseline ISS7, treatment, study week and the interaction between treatment and study week. A negative change from baseline indicates an improvement in urticaria activity. |
Baseline and Week 16 |
|
| Secondary |
Change From Baseline in HSS Over 7 Days (HSS7) at Week 16 |
The HSS is a component of the UAS, a CSU-specific patient-reported outcome measure and assessed the number of wheals, with daily scores ranging from 0 (no wheals) to 3 (>50 wheals) for the previous 24 hours. The sum of daily HSS over a 7-day period provides the HSS7, from 0 (no symptoms) to 21 (severe wheals). The LSM estimates are based on the repeated measure model with stratification factor (prior anti-IgE status), baseline HSS7, treatment, study week and the interaction between treatment and study week. A negative change from baseline indicates an improvement in urticaria activity. |
Baseline and Week 16 |
|
| Secondary |
Number of Participants With a UAS7 of = 6 (Minimal Residual Disease) at Week 16 |
The sum of the daily UAS over a 7-day period provides the UAS7, from 0 (no symptoms) to 42 (severe urticaria). Minimal residual disease in UAS7 was defined as a score = 6 and indicates well-controlled urticaria and a good response to treatment. |
Week 16 |
|
| Secondary |
Number of Participants With a Change From Baseline in UAS7 of = -10 (Minimal Important Difference) |
The sum of the daily UAS over a 7-day period provides the UAS7, from 0 (no symptoms) to 42 (severe urticaria). Minimal important difference in UAS7 was defined as a change from baseline of = -10. |
Baseline and Week 16 |
|
| Secondary |
Number of Participants With a UAS7 = 0 at Week 16 (Complete Response) |
The sum of the daily UAS over a 7-day period provides the UAS7, from 0 (no symptoms) to 42 (severe urticaria). A complete response was defined as UAS7 = 0 at Week 16. |
Week 16 |
|
| Secondary |
Number of Participants With ISS7 = 0 at Week 16 (Complete Resolution) |
The sum of daily ISS over a 7-day period provides the ISS7, from 0 (no symptoms) to 21 (severe itch). An ISS7 = 0 indicates a complete resolution of itch. |
Week 16 |
|
| Secondary |
Number of Participants With a Change From Baseline in ISS7 of = -5 (Minimal Important Difference) |
The sum of daily ISS over a 7-day period provides the ISS7, from 0 (no symptoms) to 21 (severe itch). Minimal important difference in ISS7 was defined as a change from baseline of = -5. |
Baseline and Week 16 |
|
| Secondary |
Number of Participants With HSS7 = 0 at Week 16 (Complete Resolution) |
The sum of daily HSS over a 7-day period provides the HSS7, from 0 (no symptoms) to 21 (severe wheals). An HSS7 = 0 indicates a complete resolution of hives. |
Week 16 |
|
| Secondary |
Number of Participants With a Change From Baseline in HSS7 of = -5.5 (Minimal Important Difference) |
The sum of daily HSS over a 7-day period provides the HSS7, from 0 (no symptoms) to 21 (severe wheals). Minimal important difference in HSS7 was defined as a change from baseline of = -5.5. |
Baseline and Week 16 |
|
| Secondary |
Change From Baseline in Weekly Sleep Interference Score (SIS7) at Week 16 |
The SIS is part of the Urticaria Patient Daily Diary and was assessed by the participant using the electronic diary once daily in the morning. Participants scored sleep interference on a scale of 0 (no interference) to 3 (substantial, woke up often, severe interference with sleep). The SIS7 was a sum of the daily scores over 7 days ranging from 0 to 21. The LSM estimates were based on the repeated measure model with stratification factor (prior anti-IgE status), baseline SIS7, treatment, study week and the interaction between treatment and study week. A negative change from baseline indicates an improvement in sleep interference. |
Baseline and Week 16 |
|
| Secondary |
Change From Baseline in Weekly Sleep Quality Score (SQS7): Sum of Daily SQS at Week 16 |
The SQS was assessed by the participant through 3 questions relating to falling asleep (Q1), wakefulness (Q2), and feeling rested in the morning (Q3). The sum of the 3 daily sleep quality items over 7 days, ranged from 0 (good quality sleep) to 63 (poor quality sleep). The LSM estimates were based on the repeated measure model with stratification factor (prior anti-IgE status), baseline SQS7 - sum of SQS, treatment, study week and the interaction between treatment and study week. A negative change from baseline indicates an improvement in sleep quality. |
Baseline and Week 16 |
|
| Secondary |
Change From Baseline in SQS7: Sum of Average Daily Q1 - Q3 at Week 16 |
The SQS was assessed by the participant through 3 questions relating to falling asleep (Q1), wakefulness (Q2), and feeling rested in the morning (Q3). The sum of average daily Q1 - Q3 score was generated by averaging 3 daily sleep quality items and then summing the daily average over 7 days with a score ranging from 0 (good quality sleep) to 21 (poor quality sleep) (sum of the average daily Q1 - Q3). The LSM estimates were based on the repeated measure model with stratification factor (prior anti-IgE status), baseline SQS7 - sum of average daily Q1 - Q3, treatment, study week and the interaction between treatment and study week. A negative change from baseline indicates an improvement in sleep quality. |
Baseline and Week 16 |
|
| Secondary |
Change From Baseline in Urticaria Control Test (UCT) Score at Week 16 |
The UCT assesses disease control in participants with CSU through a retrospective validated scoring system, evaluating the physical symptoms of chronic urticaria (itch, hives and/or angioedema) and the effectiveness of treatment over 4 weeks. It consists of 4 questions with 5 answer options, scored from 0 to 4, and the UCT score is the sum of all 4 questions, with total score ranging from 0 (no control) to 16 (complete control). A score of = 12 indicates well-controlled urticaria and a score of = 11 points indicates poor disease control. A positive change from baseline indicates an improvement in disease control. The LSM estimates are based on the repeated measure model with stratification factor (prior anti-IgE status), baseline UCT score, treatment, study week and the interaction between treatment and study week. |
Baseline and Week 16 |
|
| Secondary |
Change From Baseline in Weekly Angioedema Activity Score (AAS7) at Week 16 |
The AAS is a 5-item patient-reported outcome measure used to determine angioedema activity. Participants retrospectively documented the presence or absence of angioedema in the past 24 hours, and the AAS daily score ranged from 0 to 15 points, assessing 5 key factors when angioedema is present, including duration, physical discomfort, impact on daily activities, impact on appearance, and overall severity). The daily AAS scores are summed for 7 days to form the AAS7 with a range of 0 (not present) to 105 (most severe angioedema activity). Negative changes from baseline indicate an improvement in angioedema activity. The LSM estimates were based on the repeated measure model with stratification factor (prior anti-IgE status), baseline AAS7, treatment, study week and the interaction between treatment and study week. |
Baseline and Week 16 |
|
| Secondary |
Number of Cumulative Weeks That Participants Achieved AAS7 = 0 at Week 16 (Angioedema Occurrence Free) |
The AAS is a 5-item patient-reported outcome measure used to determine angioedema activity. Participants retrospectively documented the presence or absence of angioedema in the past 24 hours, and the AAS daily score ranged from 0 to 15 points, assessing 5 key factors when angioedema is present, including duration, physical discomfort, impact on daily activities, impact on appearance, and overall severity). The daily AAS scores are summed for 7 days to form the AAS7 with a range of 0 (not present) to 105 (most severe angioedema activity). Angioedema occurrence free was defined as AAS7 = 0. |
Baseline to Week 16 |
|
| Secondary |
Change From Baseline in the Chronic Urticaria Quality of Life Questionnaire (CU-Q2oL) at Week 16 |
The CU-Q2oL is a 23-item, self-reported urticaria-specific measure to evaluate 6 dimensions of quality of life (QoL): pruritus, impact on life activities, sleep problems, limitations, looks, and swelling. The total score is transformed to a linear scale of 0 to 100 with a higher CU-Q2oL score indicating a higher QoL impairment. A negative change from baseline indicates an improvement in QoL. The LSM estimates are based on the repeated measure model with stratification factor (prior anti-IgE status), baseline CU-Q2oL score, treatment, study week and the interaction between treatment and study week. |
Baseline and Week 16 |
|
| Secondary |
Change From Baseline in the Dermatology Life Quality Index (DLQI) at Week 16 |
The DLQI is a 10-item, participant-completed, health-related QoL assessment with content specific to those with dermatology conditions. The DLQI evaluates participant perceptions including dermatology-related symptoms and feelings, impacts on daily activities, leisure, work or school, personal relationships, and side effects of treatment. The recall period was 1 week. The DLQI total score ranges from 0 to 30 with a higher score indicating a greater QoL impairment. A negative change from baseline indicates an improvement in QoL. The LSM estimates are based on the repeated measure model with stratification factor (prior anti-IgE status), baseline DLQI score, treatment, study week and the interaction between treatment and study week. |
Baseline and Week 16 |
|
| Secondary |
Change From Baseline in the Angioedema Quality of Life Questionnaire (AE-QoL) at Week 16 |
The AE-QoL is a validated angioedema QoL questionnaire for participants with angioedema. It consists of 17 questions evaluating 4 domains including functioning, fatigue/mood, fear/shame, and food with a recall period of 4 weeks. The total score is transformed to a linear scale ranging from 0 to 100, with a higher score indicating a worse impairment in QoL. A negative change from baseline indicates an improvement in QoL. The LSM estimates are based on the repeated measure model with stratification factor (prior anti-IgE status), baseline AE-QoL score, treatment, study week and the interaction between treatment and study week. |
Baseline and Week 16 |
|
| Secondary |
Change From Baseline in the Angioedema Control Test (AECT) Score at Week 16 |
The AECT is a patient-reported outcome measure to evaluate disease control in the domains of signs and symptoms, QoL, anxiety/fear, and effectiveness of therapy. The total AECT score ranges from 0 to 16, with higher scores indicating well-controlled disease. A positive change from baseline indicates an improvement in angioedema control. The LSM estimates are based on the repeated measure model with stratification factor (prior anti-IgE status), baseline AECT score, treatment, study week and the interaction between treatment and study week. |
Baseline and Week 16 |
|
| Secondary |
Number of Participants With an AECT Score = 16 at Week 16 (Complete Control) |
The total AECT score ranges from 0 to 16, with higher scores indicating better controlled disease. Complete control was defined as AECT score = 16. |
Baseline and Week 16 |
|
| Secondary |
Change From Baseline in the Work Productivity and Activity Impairment Questionnaire: Chronic Urticaria (WPAI-CU) Score at Week 16 |
The WPAI-CU is a questionnaire that assesses the impact of an intervention on work productivity, evaluating 4 areas including absenteeism, presenteeism, work productivity loss, and activity impairment over the past 7 days. Each of the areas is scored separately as a percentage, ranging from 0 to 100, with higher numbers indicating greater impairment and less productivity. A negative change from baseline indicates an improvement. The LSM estimates are based on the repeated measure model with stratification factor (prior anti-IgE status), baseline WPAI-CU score, treatment, study week and the interaction between treatment and study week. |
Baseline and Week 16 |
|
| Secondary |
Number of Cumulative Days of sgAH Rescue Medication Use From Baseline to Week 16 |
Participants recorded any need of sgAH rescue medication in their daily electronic diary. |
Baseline to Week 16 |
|
| Secondary |
Serum Concentration of Tezepelumab |
The lower limit of quantification was 10 ng/mL, and values below this limit were set to zero. |
Week 1 pre-dose, Weeks 2, 4, 8, 12, 16, 24, and 32 |
|
| Secondary |
Number of Participants With Treatment-emergent Adverse Events (TEAEs) |
An adverse event (AE) was any untoward medical occurrence in a clinical study participant irrespective of a causal relationship with study treatment. TEAEs were AEs that started on or after the first dose of investigational product up to the end of study (Week 32). A serious AE (SAE) was defined as any untoward medical occurrence that met at least 1 of the following serious criteria: immediately life-threatening, required hospitalization, resulted in persistent or significant disability/incapacity, was a congenital anomaly/birth defect, or other medically important serious event. |
Day 1 Week 1 to Week 32, up to 32 weeks |
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