Change from baseline in St. George's Respiratory Questionnaire (SGRQ) total score and domain scores (symptoms, activity and impact score) after 6 months treatment in anti-IL5/IL5R naïve patients. SGRQ is a validated, 50-item questionnaire, giving scores ranging from 0 (best health status) to 100 (worst health status). The SGRQ yields a total score and 3 domain scores (symptoms, activity, and impacts). The total score indicates the impact of disease on overall health status. A difference of four units in the SGRQ total score is considered the MCID.

Change from baseline in ACQ-6 (Asthma-Control-Questionnaire-6) score after 7 days of treatment in anti-IL5/IL5R naïve patients.

ACQ-6 is a validated questionnaire based on 5 symptoms questions (night-time waking, symptoms on waking, activity limitation, shortness of breath, wheezing), and daily rescue bronchodilator use. Each item is scored on a 7-point scale (0=no impairment; 6=maximum impairment), and the ACQ score is the mean of these items. The MCID is greater than or equal to 0.5.

Change from baseline in patient satisfaction, measured on Visual Analogue Scale (VAS), after 7 days of treatment in anti-IL5/IL5R naïve patients. VAS Scores ranged from "extremly satisfied" (0 mm) to "not at all satisfied" (100 mm).

Change from baseline in patient symptoms, measured on Visual Analogue Scale (VAS), after 7 days of treatment in anti-IL5/IL5R naïve patients. VAS Scores ranged from "not at all bothersome" (0 mm) to "extremly bothersome" (100 mm).

Change from baseline in ACQ-6 (Asthma-Control-Questionnaire-6) score after 14 days of treatment in anti-IL5/IL5R naïve patients. ACQ-6 is a validated questionnaire based on 5 symptoms questions (night-time waking, symptoms on waking, activity limitation, shortness of breath, wheezing), and daily rescue bronchodilator use. Each item is scored on a 7-point scale (0=no impairment; 6=maximum impairment), and the ACQ score is the mean of these items. The MCID is greater than or equal to 0.5.

Change from baseline in patient satisfaction, measured on Visual Analogue Scale (VAS), after 14 days of treatment in anti-IL5/IL5R naïve patients. VAS Scores ranged from "extremly satisfied" (0 mm) to "not at all satisfied" (100 mm).

Change from baseline in patient symptoms, measured on Visual Analogue Scale (VAS), after 14 days of treatment in anti-IL5/IL5R naïve patients. VAS Scores ranged from "not at all bothersome" (0 mm) to "extremly bothersome" (100 mm).

Change from baseline in asthma control at each visit during the study period, using ACT in anti-IL5/IL5R naïve patients. ACT is a simple, validated, 5- item tool giving a total score from 5 (worst control) to 25 (best control). Scores of 20 to 25 denote well-controlled asthma, scores ≤19 identifies patients with poorly controlled asthma. The minimum clinically important difference (MCID) is reported to be 3 points.

Change from baseline in asthma control at each visit during the study period, using ACQ-6 in anti-IL5/IL5R naïve patients. ACQ-6 is a validated questionnaire based on 5 symptoms questions (night-time waking, symptoms on waking, activity limitation, shortness of breath, wheezing), and daily rescue bronchodilator use. Each item is scored on a 7-point scale (0=no impairment; 6=maximum impairment), and the ACQ score is the mean of these items. The MCID is greater than or equal to 0.5.

Investigator-chosen reasons for

• Initiation of benralizumab / switching to benralizumab (treatment change from one biologic to another, regardless of the time since the last dose of the previous biologic) at enrolment
• discontinuation of benralizumab during the treatment period.

Change from baseline in ACQ-6 (Asthma-Control-Questionnaire-6) score at the end of 6, 12, 18 and 24 months of benralizumab treatment in biologic experienced patients.

ACQ-6 is a validated questionnaire based on 5 symptoms questions (night-time waking, symptoms on waking, activity limitation, shortness of breath, wheezing), and daily rescue bronchodilator use. Each item is scored on a 7-point scale (0=no impairment; 6=maximum impairment), and the ACQ score is the mean of these items. The MCID is greater than or equal to 0.5.

Change from baseline in St. George's Respiratory Questionnaire (SGRQ) total score and domain scores (symptoms, activity and impact score) after 6, 12, 18 and 24 months treatment in biologic experienced patients. SGRQ is a validated, 50-item questionnaire, giving scores ranging from 0 (best health status) to 100 (worst health status). The SGRQ yields a total score and 3 domain scores (symptoms, activity, and impacts). The total score indicates the impact of disease on overall health status. A difference of four units in the SGRQ total score is considered the MCID.

Change from baseline in ACQ-6 (Asthma-Control-Questionnaire-6) score after 7 and 14 days of treatment in biologic experienced patients. ACQ-6 is a validated questionnaire based on 5 symptoms questions (night-time waking, symptoms on waking, activity limitation, shortness of breath, wheezing), and daily rescue bronchodilator use. Each item is scored on a 7-point scale (0=no impairment; 6=maximum impairment), and the ACQ score is the mean of these items. The MCID is greater than or equal to 0.5.

Change from baseline in patient satisfaction, measured on Visual Analogue Scale (VAS), after 7 and 14 days of treatment in biologic experienced patients. VAS Scores ranged from "extremly satisfied" (0 mm) to "not at all satisfied" (100 mm).

Change from baseline in patient symptoms, measured on Visual Analogue Scale (VAS), after 7 and 14 days of treatment in biologic experienced patients. VAS Scores ranged from "not at all bothersome" (0 mm) to "extremly bothersome" (100 mm).

Investigator-reported treatment effectiveness using GETE (Global Evaluation of Treatment Effectiveness) after 6 months of treatment. GETE grades overall treatment effectiveness using the following criteria: excellent (complete control of asthma); good (marked improvement of asthma); moderate (discernible, but limited improvement in asthma); poor (no appreciable change in asthma); or worsening (of asthma).