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Mometasone Furoate

Benralizumab

Anti-Asthmatic Agents

SC - subcutaneously MF - Mometasone Furoate

Benralizumab injection is 30mg/ml SC clear to opalescent, colourless to yellow solution in accessorized pre-filled syringe.

Benralizumab 30 mg SC will be injected every 4 weeks for the first 3 doses - Weeks 0 , 4 and 8 and every 8 weeks thereafter - Weeks 16, 24, 32, 40 and 48. Total of 8 doses.

Mometasone Furoate Nasal Spray (MFNS) - intranasal corticosteroid - 2 doses (1 dose = 50 micrograms/actuation) in each nostril twice daily. Total daily dose of 400mcg. MFNS will be used for a minimum of 4 weeks prior to randomization and will be continued throughout the study.

Benralizumab 30 mg SC + Mometasone Furoate

Matching placebo injection is SC clear to opalescent, colourless to yellow solution in accessorized pre-filled syringe.

Matching placebo SC will be injected every 4 weeks for the first 3 doses - Weeks 0 , 4 and 8 and every 8 weeks thereafter - Weeks 16, 24, 32, 40 and 48. Total of 8 doses.

Mometasone Furoate Nasal Spray (MFNS) - intranasal corticosteroid - 2 doses (1 dose = 50 micrograms/actuation) in each nostril twice daily. Total daily dose of 400mcg. MFNS will be used for a minimum of 4 weeks prior to randomization and will be continued throughout the study.

Matching placebo SC + Mometasone Furoate

Claus Bachert, Prof. dr. h.c.

The aim of this present study is to investigate the use of benralizumab as treatment for severe nasal polyposis. The effect of benralizumab on nasal polyps will be assessed over a 56 weeks of treatment period in patients with severe bilateral nasal polyposis who are still symptomatic despite standard of care therapy, i.e current use of intranasal corticosteroids (INCS) and prior surgery and/or use of systemic corticosteroids. The first 200 patients that complete the 56-week treatment will have a 6 month follow-up (FU) period without dosing.

Efficacy and Safety Study of Benralizumab for Patients With Severe Nasal Polyposis

A Multicenter, Randomized, Double-Blind, Parallel-Group, Placebo-Controlled Phase 3 Efficacy and Safety Study Of Benralizumab in Patients With Severe Nasal Polyposis

Qualified researchers can request access to anonymized individual patient-level data from AstraZeneca group of companies sponsored clinical trials via the request portal. All request will be evaluated as per the AZ disclosure commitment: https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure

Change from baseline in total nasal polyps score (NPS) at week 40 was defined as the endpoint value at week 40 minus the baseline value. The total NPS was the sum of the right and left nostril scores and maximum total NPS is 8, as evaluated by nasal endoscopy and the left and right score were based on central read with scale from 0 to 4 where higher score reflects heavier bilateral nasal polyp burden. Baseline was the last valid value on or prior to the date of randomization. Data collected after nasal polyposis (NP) surgery and/or systemic corticosteroids for NP (SCS_NP) were set to missing. In calculation of summary statistics (mean and standard deviation), the worst-possible (WP) after NP surgery and worst-observation carried forward (WOCF) after SCS_NP were applied. In ANCOVA, a hybrid method of WP after NP surgery, WOCF after SCS_NP and multiple imputation (MI) assuming missing at random were used to build the complete imputation datasets for the analysis.

Change from baseline in nasal blockage score (NBS) at week 40 was defined as the endpoint value at week 40 minus the baseline value. The NBS was captured by an item in NPSD. Patients were asked to rate the severity of their worst nasal blockage over the past 24 hours using the following response options: 0-none; 1-mild; 2-moderate; 3-severe. The NBS and the changes from baseline were summarized every two weeks (bi-weekly). Baseline was the average of daily responses from Day -13 to Day 1. Data collected after nasal polyposis (NP) surgery and/or systemic corticosteroids for NP (SCS_NP) were set to missing. In calculation of summary statistics (mean and standard deviation), the worst-possible (WP) after NP surgery and worst-observation carried forward (WOCF) after SCS_NP were applied. In ANCOVA, a hybrid method of the WP after NP surgery, WOCF after SCS_NP and multiple imputation (MI) assuming missing at random were used to build the complete imputation datasets for the analysis.

Change from baseline in SinoNasal outcome test (SNOT-22) at week 40 was defined as the endpoint value at week 40 minus the baseline value. The SNOT-22 is a condition specific health-related quality of life assessment which captures patient-reported physical problems, functional limitations, and emotional consequences of sinonasal conditions. The total score is the sum of item scores and has a range from 0 to 110 (higher scores indicate poorer outcomes). Baseline was the last valid value on or prior to the date of randomization. Data collected after NP surgery and/or SCS_NP were set to missing. In calculation of summary statistics (mean and standard deviation), the worst-possible (WP) after NP surgery and worst-observation carried forward (WOCF) after SCS_NP were applied. In ANCOVA, a hybrid method of WP after NP surgery, WOCF after SCS_NP and multiple imputation (MI) assuming missing at random were used to build the complete imputation datasets for the analysis.

The cumulative percentage and the corresponding 95% CI are based on the Kaplan-Meier estimates. Patients can have more than 1 rescue category during the study, and the first rescue per patient is considered. The time to first nasal polyposis (NP) surgery and/or systemic corticosteroids (SCS) use for NP up to week 56 was calculated based on the earliest occurrence of NP surgery and/or SCS use for NP and was calculated as follows: Time to first NP surgery and/or SCS use for NP = Earlier of (Start date of first NP surgery, Start date of first SCS use for NP) - date of randomization + 1. For patients who did not experience any surgery or SCS use for NP, the time to event was censored at earlier of (date of their week 56 visit, date of discontinuation).

The cumulative percentage and the corresponding 95% CI are based on the Kaplan-Meier estimates. Patients can have more than 1 rescue category during the study, and the first rescue per patient is considered. The time to first nasal polyposis (NP) surgery up to week 56 was calculated based on the earliest occurrence of NP surgery and was calculated as follows: Time to first NP surgery=Start date of first NP surgery - date of randomization + 1. For patients who did not experience any surgery, the time to event was censored at earlier of (date of their week 56 visit, date of discontinuation).

Change from baseline in difficulty with sense of smell (DSS) at week 40 was defined as the endpoint value at week 40 minus the baseline value. The DSS is captured by an item in the NPSD. Severity of worst difficulty with sense of smell over the past 24 hours was rated with response options: 0-none; 1-mild; 2-moderate; 3-severe. The DSS and the changes from baseline were summarized every two weeks (bi-weekly). Baseline was the average of daily responses from Day -13 to Day 1. Data collected after nasal polyposis (NP) surgery and/or systemic corticosteroids use for NP (SCS_NP) were set to missing. In calculation of summary statistics (mean and standard deviation), the worst-possible (WP) after NP surgery and worst-observation carried forward (WOCF) after SCS_NP were applied. In ANCOVA, a hybrid method of WP after NP surgery, WOCF after SCS_NP and multiple imputation (MI) assuming missing at random were used to build the complete imputation datasets for the analysis.

Change from baseline in total nasal polyps score (NPS) at week 56 was defined as the endpoint value at week 56 minus the baseline value. The total NPS is the sum of the right and left nostril scores, as evaluated by nasal endoscopy and the left and right score are based on central read with scale from 0 to 4 where higher score reflects heavier bilateral nasal polyp burden. Baseline was the last valid value on or prior to the date of randomization. Data collected after nasal polyposis (NP) surgery and/or systemic corticosteroids for NP (SCS_NP) were set to missing. In calculation of summary statistics (mean and standard deviation), the worst-possible (WP) after NP surgery and worst-observation carried forward (WOCF) after SCS_NP were applied. In ANCOVA, a hybrid method of WP after NP surgery, WOCF after SCS_NP and multiple imputation (MI) assuming missing at random were used to build the complete imputation datasets for the analysis.

Change from baseline in nasal blockage score (NBS) at week 56 was defined as the endpoint value at week 56 minus the baseline value. The NBS is captured by an item in the NPSD. Patients were asked to rate the severity of their worst nasal blockage over the past 24 hours using the following response options: 0-none; 1-mild; 2-moderate; 3-severe. The NBS and the changes from baseline were summarized every two weeks (bi-weekly). Baseline was the average of daily responses from Day -13 to Day 1. Data collected after nasal polyposis (NP) surgery and/or systemic corticosteroids for NP (SCS_NP) were set to missing. In calculation of summary statistics (mean and standard deviation), the worst-possible (WP) after NP surgery and worst-observation carried forward (WOCF) after SCS_NP were applied. In ANCOVA, a hybrid method of WP after NP surgery, WOCF after SCS_NP and multiple imputation (MI) assuming missing at random were used to build the complete imputation datasets for the analysis.

Change from baseline in SinoNasal outcome test (SNOT-22) at week 56 was defined as the endpoint value at week 56 minus the baseline value. The SNOT-22 is a condition specific health-related quality of life assessment which captures patient-reported physical problems, functional limitations, and emotional consequences of sinonasal conditions. The total score is range from 0 to 110 (higher scores indicate poorer outcomes). Baseline was the last valid value on or prior to the date of randomization. Data collected after nasal polyposis (NP) surgery and/or systemic corticosteroids for NP (SCS_NP) were set to missing. In calculation of summary statistics (mean and standard deviation), the worst-possible (WP) after NP surgery and worst-observation carried forward (WOCF) after SCS_NP were applied. In ANCOVA, a hybrid method of WP after NP surgery, WOCF after SCS_NP and multiple imputation (MI) assuming missing at random were used to build the complete imputation datasets for the analysis.

Change from baseline in difficulty with sense of smell (DSS) at week 56 was defined as the endpoint value at week 56 minus the baseline value. The DSS is captured by an item in the NPSD with response options: 0-none; 1-mild; 2-moderate; 3-severe to rate the severity of their worst difficulty with sense of smell over past 24 hours. The DSS and the changes from baseline were summarized every two weeks (bi-weekly). Baseline was the average of daily responses from Day -13 to Day 1. Data collected after nasal polyposis (NP) surgery and/or systemic corticosteroids for NP (SCS_NP) were set to missing. In calculation of summary statistics (mean and standard deviation), the worst-possible (WP) after NP surgery and worst-observation carried forward (WOCF) after SCS_NP were applied. In ANCOVA, a hybrid method of WP after NP surgery, WOCF after SCS_NP and multiple imputation (MI) assuming missing at random were used to build the complete imputation datasets for the analysis.

Change from baseline in Computed tomography (CT) Lund Mackay Score (LMS) at end of treatment (EOT)/investigational product discontinuation (IPD) was defined as the endpoint value at EOT/IPD minus the baseline value. The LMS evaluates the patency using a 0-2 scale (0-normal; 1-partial opacification; and 2-total opacification) of each sinus (maxillary, anterior ethmoid, posterior ethmoid, sphenoid, frontal sinus on each side). The osteomeatal complex is graded as 0- not occluded or 2-occluded. The total CT score is the sum of the scores from all the sinus and ranges from 0 to 24. The minimum is 0 and higher score indicates worse outcome. The analysis used the data collected after systemic corticosteroids for nasal polyposis (SCS_NP). A composite strategy was used for NP surgery. If a patient had NP surgery before EOT/IPD CT scan, the data was censored after the time of the first NP surgery and the worst possible value (WP) was imputed in its place.

The percentage of patients who had nasal polyposis (NP) surgery or systemic corticosteroids use for nasal polyposis (SCS_NP) surgery up to week 56 was summarized and analyzed using the Cochran-Mantel-Haenszel test stratified by region (US vs non-US) and baseline comorbid asthma status (yes vs no).

The percentage of patients who had systemic corticosteroids (SCS) use for nasal polyposis (NP) surgery up to week 56 was summarized and analyzed using the Cochran-Mantel-Haenszel test stratified by region (US vs non-US) and baseline comorbid asthma status (yes vs no).

The cumulative percentage and the corresponding 95% CI are based on the Kaplan-Meier estimates. Patients can have more than 1 rescue category during the study, and the first rescue per patient is considered. The time to first systemic corticosteroids for use for nasal polyposis (SCS_NP) up to week 56 was calculated based on the earliest occurrence of SCS_ NP and was calculated as follows: Time to first SCS_NP = Earlier of (Start date of first SCS use for NP) - date of randomization + 1. For patients who did not experience any SCS use for NP, the time to event was censored at earlier of (date of their week 56 visit, date of discontinuation). The time to first SCS use for NP surgery was analyzed using a Cox proportional hazard model with treatment arm, region (US vs non-US) and baseline comorbid asthma status (yes vs no) as covariates. A hazard ratio less than 1 indicates a lower rate of incidence for subjects on benra.

The total number of courses of systemic corticosteroids (SCS) use for nasal polyposis (NP) was summarized using descriptive statistics.

The total systemic corticosteroids (SCS) for nasal polyposis (NP) dose used (mg) was summarized using descriptive statistics.

The total duration of systemic corticosteroids (SCS) for nasal polyposis (NP) in days was summarized using descriptive statistics.

Annual systemic corticosteroids for nasal polyposis (SCS_NP) use rate =365.25×total number of courses of SCS_NP /total duration of follow-up within the treatment group (days). The estimated annual event rates, absolute differences, rate ratio and the corresponding confidence interval were based on a negative binomial model including covariates treatment group, region (US/non-US) and prior use of SCS_NP with total number of courses of SCS_NP as the outcome and the log of each subject's corresponding follow-up time up to week 56 as an offset variable in the model to adjust for subject's having different exposure times during which the events occur.

Change from baseline in total symptom score (TSS) at week 40 was defined as the endpoint at week 40 minus baseline value. The TSS is defined as sum of first 8 NPSD components. Severity of each nasal symptoms over the past 24 hours is rated using response options: 0-none; 1-mild; 2-moderate; 3-severe. The TSS and the change from baseline were summarized every two weeks (bi-weekly). Baseline was the average of daily TSS responses from Day -13 to Day 1. Data collected after nasal polyposis (NP) surgery and/or systemic corticosteroids for nasal polyposis (SCS_NP) were set to missing. In calculation of summary statistics (mean and standard deviation), the worst-possible (WP) after NP surgery and worst-observation carried forward (WOCF) after SCS_NP were applied. In ANCOVA, a hybrid method of the WP after NP surgery, WOCF after SCS_NP and multiple imputation (MI) assuming MAR were used to build the complete imputation datasets for the analysis.

Change from baseline in difficulty with sleeping due to nasal symptoms score at week 40 was defined as the endpoint at week 40 minus baseline value. The score was captured by an item in NPSD. The severity of difficulty with sleeping due to nasal symptoms over past 24 hours was rated using options: 0-none; 1-mild; 2-moderate; 3-severe. The score and change from baseline were summarized every two weeks (bi-weekly). Baseline was the average of daily responses from Day -13 to Day 1. Data collected after nasal polyposis (NP) surgery and/or systemic corticosteroids for nasal polyposis (SCS_NP) were set to missing. In calculation of summary statistics (mean and standard deviation), the worst-possible (WP) after NP surgery and worst-observation carried forward (WOCF) after SCS_NP were applied. In ANCOVA, a hybrid method of the WP after NP surgery, WOCF after SCS_NP and multiple imputation (MI) assuming missing at random were used to build the complete imputation datasets for the analysis

Change from baseline in difficulty with daily activities due to nasal symptoms score at week 40 was defined as the endpoint at week 40 minus baseline value. The score was captured by an item in NPSD. The severity of difficulty with daily activities due to nasal symptoms over the past 24 hours was rated using options: 0-none; 1-mild; 2-moderate; 3-severe. The score and change from baseline were summarized every two weeks (bi-weekly). Baseline was average of daily responses from Day -13 to Day 1. Data collected after nasal polyposis (NP) surgery and/or systemic corticosteroids for nasal polyposis (SCS_NP) were set to missing. In calculation of summary statistics (mean and standard deviation), the worst-possible (WP) after NP surgery and worst-observation carried forward (WOCF) after SCS_NP were applied. In ANCOVA, a hybrid method of the WP after NP surgery, WOCF after SCS_NP and multiple imputation (MI) assuming MAR were used to build the complete imputation datasets for the analysis.

Change from baseline in University of Pennsylvania Smell Identification Test (UPSIT) score at week 40 was defined as the endpoint value at week 40 minus the baseline value. The UPSIT is quantitative test of olfactory function. Scores were based on number of correctly identified odors (score range 0 to 40). Baseline was the last valid value on or prior to the date of randomization. Data collected after nasal polyposis (NP) surgery and/or systemic corticosteroids for nasal polyposis (SCS_NP) were set to missing. In calculation of summary statistics (mean and standard deviation), the worst-possible (WP) after NP surgery and worst-observation carried forward (WOCF) after SCS_NP were applied. In ANCOVA, a hybrid method of the WP after NP surgery, WOCF after SCS_NP and multiple imputation (MI) assuming missing at random were used to build the complete imputation datasets for the analysis.

Change from baseline in University of Pennsylvania Smell Identification Test (UPSIT) score at week 40 was defined as the endpoint value at week 40 minus the baseline value. The UPSIT is quantitative test of olfactory function. Scores are based on number of correctly identified odors (score range 0 to 40). Baseline was the last valid value on or prior to the date of randomization. Data collected after nasal polyposis (NP) surgery and/or systemic corticosteroids for nasal polyposis (SCS_NP) were set to missing. In calculation of summary statistics (mean and standard deviation), the worst-possible (WP) after NP surgery and worst-observation carried forward (WOCF) after SCS_NP were applied. In ANCOVA, a hybrid method of the WP after NP surgery, WOCF after SCS_NP and multiple imputation (MI) assuming missing at random were used to build the complete imputation datasets for the analysis.

Change from baseline in sinus severity score at end of treatment (EOT)/investigational product discontinuation (IPD) was defined as the endpoint value at EOT/IPD minus the baseline value. Quantitative assessment of sinus CT image data was used to derive an objective measure of sinus disease burden called sinus severity score. The sinus severity score is defined as (sinus mucosal volume)/(sinus mucosal volume + sinus air volume)×100. A composite strategy was used for NP surgery. If a patient had NP surgery before EOT/IPD CT scan, the data was censored after the time of the first NP surgery and the worst possible value (WP) was imputed in its place. In calculation of summary statistics (mean and standard deviation), the WP for NP surgery rescued subjects was applied. In ANCOVA, following WP (WP for NP surgery rescued subjects), model included treatment, baseline score, region (US/Non-US) and baseline comorbid asthma status.

Change from baseline in SF-36v2 physical component summary (PCS) at week 56 was defined as the endpoint value at week 56 minus the baseline value. The Short Form 36-item Health survey (SF-36v2) is a 36-item, self-report survey of functional health and wellbeing, with 4-week recall period. Responses to SF-36v2 were used to compute an 8-domain profile of functional health and well-being scores. PCS score is computed from 8 subscale scores to give a broader metric of physical health-related quality of life. Data collected after nasal polyposis (NP) surgery and/or systemic corticosteroids for NP (SCS_NP) were set to missing. Non-rescued patients whose post-baseline observations were all missing were excluded from this analysis. In calculation of summary statistics (mean and standard deviation), the worst-possible (WP) after NP surgery and worst-observation carried forward (WOCF) after SCS_NP were applied.

Change from baseline in SF-36v2 mental component summary (MCS) at week 56 was defined as the endpoint value at week 56 minus the baseline value. The Short Form 36-item Health survey (SF-36v2) is a 36-item, self-report survey of functional health and wellbeing, with 4-week recall period. Responses to SF-36v2 were used to compute an 8-domain profile of functional health and well-being scores. MCS score is computed from 8 subscale scores to give a broader metric of mental health-related quality of life. Data collected after nasal polyposis (NP) surgery and/or systemic corticosteroids for NP (SCS_NP) were set to missing. Non-rescued patients whose post-baseline observations were all missing were excluded from this analysis. In calculation of summary statistics (mean and standard deviation), the worst-possible (WP) after NP surgery and worst-observation carried forward (WOCF) after SCS_NP were applied.

Change from baseline in SF-36v2 physical functioning score at week 56 was defined as the endpoint value at week 56 minus the baseline value. The Short Form 36-item Health survey (SF-36v2) is a 36-item, self-report survey of functional health and wellbeing, with 4-week recall period. Responses to SF-36v2 were used to compute an 8-domain profile of functional health and well-being scores. Physical functioning is one of the 8-domain profile. Data collected after nasal polyposis (NP) surgery and/or systemic corticosteroids for NP (SCS_NP) were set to missing. Non-rescued patients whose post-baseline observations were all missing were excluded from this analysis. In calculation of summary statistics (mean and standard deviation), the worst-possible (WP) after NP surgery and worst-observation carried forward (WOCF) after SCS_NP were applied.

Change from baseline in SF-36v2 role limitations due to physical health score at week 56 was defined as the endpoint value at week 56 minus the baseline value. The Short Form 36-item Health survey (SF-36v2) is a 36-item, self-report survey of functional health and wellbeing, with 4-week recall period. Responses to SF-36v2 were used to compute an 8-domain profile of functional health and well-being scores. Role limitations due to physical health is one of the 8-domain profile. Data collected after nasal polyposis (NP) surgery and/or systemic corticosteroids for NP (SCS_NP) were set to missing. Non-rescued patients whose post-baseline observations were all missing were excluded from this analysis. In calculation of summary statistics (mean and standard deviation), the worst-possible (WP) after NP surgery and worst-observation carried forward (WOCF) after SCS_NP were applied.

Change from baseline in SF-36v2 bodily pain score at week 56 was defined as the endpoint value at week 56 minus the baseline value. The Short Form 36-item Health survey (SF-36v2) is a 36-item, self-report survey of functional health and wellbeing, with 4-week recall period. Responses to SF-36v2 were used to compute an 8-domain profile of functional health and well-being scores. Bodily pain is one of the 8-domain profile. Data collected after nasal polyposis (NP) surgery and/or systemic corticosteroids for NP (SCS_NP) were set to missing. Non-rescued patients whose post-baseline observations were all missing were excluded from this analysis. In calculation of summary statistics (mean and standard deviation), the worst-possible (WP) after NP surgery and worst-observation carried forward (WOCF) after SCS_NP were applied.

Change from baseline in SF-36v2 general health perceptions score at week 56 was defined as the endpoint value at week 56 minus the baseline value. The Short Form 36-item Health survey (SF-36v2) is a 36-item, self-report survey of functional health and wellbeing, with 4-week recall period. Responses to SF-36v2 were used to compute an 8-domain profile of functional health and well-being scores. General health perceptions is one of the 8-domain profile. Data collected after nasal polyposis (NP) surgery and/or systemic corticosteroids for NP (SCS_NP) were set to missing. Non-rescued patients whose post-baseline observations were all missing are excluded from this analysis. In calculation of summary statistics (mean and standard deviation), the worst-possible (WP) after NP surgery and worst-observation carried forward (WOCF) after SCS_NP were applied.

Change from baseline in SF-36v2 vitality score at week 56 was defined as the endpoint value at week 56 minus the baseline value. The Short Form 36-item Health survey (SF-36v2) is a 36-item, self-report survey of functional health and wellbeing, with 4-week recall period. Responses to SF-36v2 were used to compute an 8-domain profile of functional health and well-being scores. Vitality is one of the 8-domain profile. Data collected after nasal polyposis (NP) surgery and/or systemic corticosteroids for NP (SCS_NP) were set to missing. Non-rescued patients whose post-baseline observations were all missing were excluded from this analysis. In calculation of summary statistics (mean and standard deviation), the worst-possible (WP) after NP surgery and worst-observation carried forward (WOCF) after SCS_NP were applied.

Change from baseline in SF-36v2 social functioning score at week 56 was defined as the endpoint value at week 56 minus the baseline value. The Short Form 36-item Health survey (SF-36v2) is a 36-item, self-report survey of functional health and wellbeing, with 4-week recall period. Responses to SF-36v2 are used to compute an 8-domain profile of functional health and well-being scores. Social functioning is one of the 8-domain profile. Data collected after nasal polyposis (NP) surgery and/or systemic corticosteroids for NP (SCS_NP) were set to missing. Non-rescued patients whose post-baseline observations were all missing were excluded from this analysis. In calculation of summary statistics (mean and standard deviation), the worst-possible (WP) after NP surgery and worst-observation carried forward (WOCF) after SCS_NP were applied.

Change from baseline in SF-36v2 role limitations due to emotional problems score at week 56 was defined as the endpoint value at week 56 minus the baseline value. The Short Form 36-item Health survey (SF-36v2) is a 36-item, self-report survey of functional health and wellbeing, with 4-week recall period. Responses to SF-36v2 were used to compute an 8-domain profile of functional health and well-being scores. Role limitations due to emotional problems is one of the 8-domain profile. Data collected after nasal polyposis (NP) surgery and/or systemic corticosteroids for NP (SCS_NP) were set to missing. Non-rescued patients whose post-baseline observations were all missing were excluded from this analysis. In calculation of summary statistics (mean and standard deviation), the worst-possible (WP) after NP surgery and worst-observation carried forward (WOCF) after SCS_NP were applied.

Change from baseline in SF-36v2 mental health score at week 56 was defined as the endpoint value at week 56 minus the baseline value. The Short Form 36-item Health survey (SF-36v2) is a 36-item, self-report survey of functional health and wellbeing, with 4-week recall period. Responses to SF-36v2 were used to compute an 8-domain profile of functional health and well-being scores. Mental health is one of the 8-domain profile. Data collected after nasal polyposis (NP) surgery and/or systemic corticosteroids for NP (SCS_NP) were set to missing. Non-rescued patients whose post-baseline observations were all missing were excluded from this analysis. In calculation of summary statistics (mean and standard deviation), the worst-possible (WP) after NP surgery and worst-observation carried forward (WOCF) after SCS_NP were applied.

AstraZeneca

For analysis of Adverse Events Safety analysis set is used. Safety analysis set : All randomized participants who received at least one dose of study drug.

Benra administered every 4 weeks for the first 3 doses - Weeks 0, 4 and 8 and every 8 weeks thereafter - Weeks 16, 24, 32, 40 and 48.

Benra 30 mg

Placebo administered every 4 weeks for the first 3 doses - Weeks 0, 4 and 8 and every 8 weeks thereafter - Weeks 16, 24, 32, 40 and 48.

Placebo

Total

Age, Continuous

Sex: Female, Male

White

Black or African American

American Indian or Alaska Native

Native Hawaiian or Other Pacific Islander

Asian

Other

Race/Ethnicity, Customized

Full analysis set: All patients randomized and receiving any IP are included in the full analysis set (FAS), irrespective of their protocol adherence and continued participation in the study. Patients are analyzed according to their randomized treatment.

During COVID-19 pandemic, for ongoing patients, patient dosing, scheduled visits, and nasal endoscopies are inevitable impacted. Week 40 was made as the primary timepoint to mitigate the impact of COVID disruptions on the primary endpoint.

Maria Jison, MD Global Clinical Head, FASENRA, Late-stage R&I

The primary analysis compared the changes from baseline of benralizumab with placebo. H0: The change from baseline in total NPS and/or the change from baseline in NBS are similar between benralizumab and placebo. H1: Both of the change from baseline in total NPS and the change from baseline in NBS are different between benralizumab and placebo.

Full analysis set: All patients randomized and receiving any IP are included in the full analysis set (FAS), irrespective of their protocol adherence and continued participation in the study. Patients are analyzed according to their randomized treatment. Patients who had not been rescued and whose post-baseline observation was missing at the timepoint of interest are excluded from this analysis.

Change From Baseline in Total NPS at Week 40

Change From Baseline in NBS at Week 40

This endpoint compared the changes from baseline of benralizumab with placebo. H0: The change from baseline in SNOT-22 total score is similar between benralizumab and placebo. H1: The change from baseline in SNOT-22 total score is different between benralizumab and placebo.

Change From Baseline in SNOT-22 at Week 40

This endpoint compared the rate of incidence of first NP surgery and/or SCS use for NP between benralizumab and placebo. H0: The rate is similar between benralizumab and placebo. H1: the rate is different between benralizumab and placebo. Hazard ratio is benralizumab vs placebo and HR less than 1 indicates longer time to event

Full analysis set: All patients randomized and receiving any IP are included in the full analysis set (FAS), irrespective of their protocol adherence and continued participation in the study. Patients are analyzed according to their randomized treatment. Number of patients analyzed is number of patients who had NP surgery and/or SCS use.

Time to First NP Surgery and/or SCS Use for NP to Week 56

The endpoint compared the rate of incidence of first NP surgery between benralizumab and placebo. H0: The rate is similar between benralizumab and placebo. H1: the rate is different between benralizumab and placebo. Hazard ratio (HR) is benralizumab vs placebo and HR less than 1 indicates longer time to event

Full analysis set: All patients randomized and receiving any IP are included in the full analysis set (FAS), irrespective of their protocol adherence and continued participation in the study. Patients are analyzed according to their randomized treatment. Number of patients analyzed is number of patients who had NP surgery.

Time to the First NP Surgery up to Week 56

This endpoint compared the changes from baseline DSS score of benralizumab with placebo. H0: The change from baseline in DSS score is similar between benralizumab and placebo. H1: The change from baseline in DSS score is different between benralizumab and placebo.

Change From Baseline in DSS at Week 40

This endpoint compared the changes from baseline of benralizumab with placebo. H0: The change from baseline in NPS is similar between benralizumab and placebo. H1: The change from baseline in NPS is different between benralizumab and placebo.

Change From Baseline in NPS at Week 56

This endpoint compared the changes from baseline of benralizumab with placebo. H0: The change from baseline in NBS is similar between benralizumab and placebo. H1: The change from baseline in NBS is different between benralizumab and placebo.

Change From Baseline in NBS at Week 56

Change From Baseline in SNOT-22 at Week 56

Change From Baseline in DSS at Week 56

This endpoint compared the changes from baseline LMS score of benralizumab with placebo. H0: The change from baseline in LMS score is similar between benralizumab and placebo. H1: The change from baseline in LMS score is different between benralizumab and placebo.

CT analysis set and patients with a baseline CT who are rescued by SCS_NP by week 56

Change From Baseline in LMS at EOT/IPD

This endpoint compared the proportion of subjects with NP surgery between benralizumab and placebo. H0: The proportion is similar between benralizumab and placebo. H1: The proportion is different between benralizumab and placebo.

Percentage of Subjects With NP Surgery

This endpoint compared the proportion of subjects with SCS_NP between benralizumab and placebo. H0: The proportion is similar between benralizumab and placebo. H1: The proportion is different between benralizumab and placebo.

Percentage of Subjects With SCS_NP

This endpoint compared the proportion of subjects with NP surgery or SCS_NP between benralizumab and placebo. H0: The proportion is similar between benralizumab and placebo. H1: The proportion is different between benralizumab and placebo.

Percentage of Subjects With NP Surgery or SCS_NP

The endpoint compared the rate of incidence of SCS_NP use between benralizumab and placebo. H0: The rate is similar between benralizumab and placebo. H1: the rate is different between benralizumab and placebo. Hazard ratio (HR) is benralizumab vs placebo and HR less than 1 indicates longer time to event

Time to First SCS_NP up to Week 56

Total Number of Courses of SCS for NP

Total SCS_NP Dose (a) Used (mg)

Total Duration of SCS_NP (Days)

The endpoint compared the rate of SCS_NP use between benralizumab and placebo. H0: The rate is similar between benralizumab and placebo. H1: the rate is different between benralizumab and placebo. Rate ratio is benralizumab vs placebo and Rate ratio less than 1 indicates less likely of SCS_NP use.

Annual SCS_NP Use Rate Comparison by Period, Negative Binomial Model

This endpoint compared the changes from baseline score between benralizumab and placebo. H0: The change from baseline score is similar between benralizumab and placebo. H1: The change from baseline score is different between benralizumab and placebo.

Change From Baseline in TSS at Week 40

Change From Baseline in Difficulty With Sleeping Due to Nasal Symptoms at Week 40

Change From Baseline in Difficulty With Daily Activities Due to Nasal Symptoms at Week 40

Change From Baseline in UPSIT Score in Males at Week 40

Change From Baseline in UPSIT Score in Females at Week 40

CT analysis set and patients with a baseline CT who are rescued by SCS_NP by week 56. Patients who had not been rescued and whose post-baseline observation was missing at the timepoint of interest are excluded from this analysis.

Study title	NCT ID	Conditions	Interventions	Eligibility	Organization	Link
Efficacy and Safety Study of Benralizumab for Patients With Severe Nasal Polyposis	NCT03401229	Nasal Polyposis	Benralizumab 30... Matching placeb...	18 Years - 75 Years	AstraZeneca
Efficacy and Safety Study of Benralizumab for Patients With Severe Nasal Polyposis	NCT03401229	Nasal Polyposis	Benralizumab 30... Matching placeb...	18 Years - 75 Years	AstraZeneca

Spots Global Cancer Trial Database for benralizumab 30 mg sc + mometasone furoate