Pharmacotherapeutic group: Drugs for obstructive airway diseases, other systemic drugs forobstructive airway diseases, ATC code: R03DX10
Mechanism of actionBenralizumab is an anti-eosinophil, humanised afucosylated, monoclonal antibody (IgG1, kappa). Itspecifically binds to the alpha subunit of the human interleukin-5 receptor (IL-5Rα). The IL-5 receptoris specifically expressed on the surface of eosinophils and basophils. The absence of fucose in the Fcdomain of benralizumab results in high affinity for FcɣRIII receptors on immune effector cells such asnatural killer (NK) cells. This leads to apoptosis of eosinophils and basophils through enhancedantibody-dependent cell-mediated cytotoxicity (ADCC), which reduces eosinophilic inflammation.
Pharmacodynamic effectsEffect on blood eosinophils
In patients with asthma, treatment with benralizumab results in near complete depletion of bloodeosinophils within 24 hours following the first dose which is maintained throughout treatment. Thedepletion of blood eosinophils is accompanied by a reduction in serum eosinophil granule proteins(eosinophil derived neurotoxin [EDN] and eosinophil cationic protein [ECP]) and a reduction in bloodbasophils.
In patients with EGPA, depletion of blood eosinophils was consistent with the effect observed inasthma trials. Blood eosinophil depletion was seen at the first observed time point, 1 week oftreatment, and was maintained throughout the 52-week treatment period.
Effect on eosinophils in the airway mucosa
The effect of benralizumab on eosinophils in the airway mucosa in asthmatic patients with elevatedsputum eosinophil counts (at least 2.5%) was evaluated in a 12-week, phase 1, randomised,double-blind, placebo-controlled clinical study with benralizumab 100 or 200 mg administeredsubcutaneously. In this study, there was a median reduction from baseline in airway mucosaeosinophils of 96% in the benralizumab-treated group compared to a 47% reduction in the placebogroup (p=0.039).
Clinical efficacyAsthma
The efficacy of benralizumab was evaluated in 3 randomised, double-blind, parallel-group,placebo-controlled clinical trials between 28 to 56 weeks duration, in patients aged 12 to 75 years.
In these studies, benralizumab was administered at a dose of 30 mg once every 4 weeks for the first3 doses, and then every 4 or 8 weeks thereafter as add-on to background treatment and was evaluatedin comparison with placebo.
The two exacerbation trials, SIROCCO (Trial 1) and CALIMA (Trial 2), enrolled a total of2 510 patients with severe uncontrolled asthma, 64% females, with a mean age of 49 years. Patientshad a history of 2 or more asthma exacerbations requiring oral or systemic corticosteroid treatment(mean of 3) in the past 12 months, Asthma Control Questionnaire-6 (ACQ-6) score of 1.5 or more atscreening, and reduced lung function at baseline (mean predicted pre-bronchodilator forced expiratoryvolume in 1 second [FEV1] of 57.5%), despite regular treatment with high-dose inhaled corticosteroid(ICS) (Trial 1) or with medium or high-dose ICS (Trial 2) and a long-acting β-agonist (LABA); atleast one additional controller was administered to 51% and 41% of these patients, respectively.
For the oral corticosteroid (OCS) reduction trial ZONDA (Trial 3), a total of 220 asthma patients (61%female; mean age of 51 years) were enrolled; they were treated with daily OCS (8 to 40 mg per day;median of 10 mg) in addition to regular use of high-dose ICS and LABA with at least one additionalcontroller to maintain asthma control in 53% of the cases. The trial included an 8-week run-in periodduring which the OCS was titrated to the minimum effective dose without losing asthma control.
Patients had blood eosinophil counts ≥150 cells/μL and a history of at least one exacerbation in thepast 12 months.
While 2 dose regimens were studied in Trials 1, 2, and 3, the recommended dose regimen isbenralizumab administered every 4 weeks for the first 3 doses, then every 8 weeks thereafter (seesection 4.2) as no additional benefit was observed by more frequent dosing. The results summarisedbelow are those for the recommended dose regimen.
Exacerbation trials
The primary endpoint was the annual rate of clinically significant asthma exacerbations in patientswith baseline blood eosinophil counts ≥300 cells/μL who were taking high-dose ICS and LABA.
Clinically significant asthma exacerbation was defined as worsening of asthma requiring use oforal/systemic corticosteroids for at least 3 days, and/or emergency department visits requiring use oforal/systemic corticosteroids and/or hospitalisation. For patients on maintenance OCS, this wasdefined as a temporary increase in stable oral/systemic corticosteroids for at least 3 days or a singledepo-injectable dose of corticosteroids.
In both trials, patients receiving benralizumab experienced significant reductions in annualexacerbation rates compared to placebo in patients with blood eosinophils ≥300 cells/μL. In addition,change from baseline in mean FEV1 showed benefit as early as 4 weeks, which was maintainedthrough to end of treatment (Table 2).
Reductions in exacerbation rates were observed irrespective of baseline eosinophil count; however,increasing baseline eosinophil counts was identified as a potential predictor of improved treatmentresponse particularly for FEV1.
Table 2. Results of annual exacerbation rate and lung function at end of treatment of Trial 1 and2 by eosinophil count
Trial 1 Trial 2
Benralizumab Placebo Benralizumab Placebo
Blood eosinophil count n=267 n=267 n=239 n=248≥300 cells/μLa
Clinically significant exacerbations
Rate 0.74 1.52 0.73 1.01
Trial 1 Trial 2
Benralizumab Placebo Benralizumab Placebo
Difference -0.78 -0.29
Rate ratio (95% CI) 0.49 (0.37, 0.64) 0.72 (0.54, 0.95)p-value <0.001 0.019
Pre-bronchodilator FEV1 (L)
Mean baseline 1.660 1.654 1.758 1.815
Improvement from baseline 0.398 0.239 0.330 0.215
Difference (95% CI) 0.159 (0.068, 0.249) 0.116 (0.028, 0.204)p-value 0.001 0.010
Blood eosinophil count n=131 n=140 n=125 n=122<300 cells/μLb
Clinically significant exacerbations
Rate 1.11 1.34 0.83 1.38
Difference -0.23 -0.55
Rate ratio (95% CI) 0.83 (0.59, 1.16) 0.60 (0.42, 0.86)
Pre-bronchodilator FEV1 (L)
Mean change 0.248 0.145 0.140 0.156
Difference (95% CI) 0.102 (-0.003, 0.208) -0.015 (-0.127, 0.096)
a. Intent-to-treat population (patients on high-dose ICS and blood eosinophils ≥300 cells/μL).
b. Not powered to detect a treatment difference in patients with blood eosinophils <300 cells/μL.
Across Trials 1 and 2 combined, there was a numerically greater exacerbation rate reduction andgreater improvements in FEV1 with increasing baseline blood eosinophils.
The rate of exacerbations requiring hospitalisation and/or emergency room visits for patients receivingbenralizumab compared to placebo for Trial 1 were 0.09 versus 0.25 (rate ratio 0.37, 95% CI: 0.20,0.67, p≤0.001) and for Trial 2 were 0.12 versus 0.10 (rate ratio 1.23, 95% CI: 0.64, 2.35, p=0.538). In
Trial 2, there were too few events in the placebo treatment arm to draw conclusions for exacerbationsrequiring hospitalisation or emergency room visits.
In both Trials 1 and 2, patients receiving benralizumab experienced statistically significant reductionsin asthma symptoms (Total Asthma Score) compared to patients receiving placebo. Similarimprovement in favour of benralizumab was observed for the ACQ-6 and Standardised Asthma
Quality of Life Questionnaire for 12 Years and Older (AQLQ(S)+12) (Table 3).
Table 3. Treatment difference in mean change from baseline in total asthma symptom score,
ACQ-6 and AQLQ(s)+12 at end of treatment - Patients on high-dose ICS and blood eosinophils≥300 cells/μL
Trial 1 Trial 2
Benralizumab Placebo Benralizumab Placebo(na=267) (na=267) (na=239) (na=248)
Total asthma symptom scoreb
Mean baseline 2.68 2.74 2.76 2.71
Trial 1 Trial 2
Benralizumab Placebo Benralizumab Placebo(na=267) (na=267) (na=239) (na=248)
Improvement from -1.30 -1.04 -1.40 -1.16baseline
Difference (95% CI) -0.25 (-0.45, -0.06) -0.23 (-0.43, -0.04)p-value 0.012 0.019
ACQ-6
Mean baseline 2.81 2.90 2.80 2.75
Improvement from -1.46 -1.17 -1.44 -1.19baseline
Difference (95% CI) -0.29 (-0.48, -0.10) -0.25 (-0.44, -0.07)
AQLQ(S)+12
Mean baseline 3.93 3.87 3.87 3.93
Improvement from 1.56 1.26 1.56 1.31baseline
Difference (95% CI) 0.30 (0.10, 0.50) 0.24 (0.04, 0.45)
a. Number of patients (n) varies slightly due to the number of patients for whom data were available for eachvariable. Results shown based on last available data for each variable.
b. Asthma symptom scale: total score from 0 (least) to 6 (most); day and night time asthma symptom scoresfrom 0 (least) to 3 (most) symptoms. Individual day and night time scores were similar.
Subgroup analyses by prior exacerbation history
Subgroup analyses from Trials 1 and 2 identified patients with higher prior exacerbation history as apotential predictor of improved treatment response. When considered alone or in combination withbaseline blood eosinophils count, these factors may further identify patients who may achieve greaterresponse from benralizumab treatment (Table 4).
Table 4. Exacerbation rate and pulmonary function (FEV1) at end of treatment by number ofexacerbations in the previous year - Patients on high-dose ICS and blood eosinophils≥300 cells/μL
Trial 1 Trial 2
Benralizumab Placebo Benralizumab Placebo(N=267) (N=267) (N=239) (N=248)
Baseline of 2 exacerbationsn 164 149 144 151
Exacerbation rate 0.57 1.04 0.63 0.62
Difference -0.47 0.01
Rate ratio (95% CI) 0.55 (0.37, 0.80) 1.01 (0.70, 1.46)
Pre-bronchodilator 0.343 0.230 0.266 0.236
FEV1 mean change
Difference (95% CI) 0.113 (-0.002, 0.228) 0.029 (-0.079, 0.137)
Baseline of 3 or more exacerbationsn 103 118 95 97
Exacerbation rate 0.95 2.23 0.82 1.65
Difference -1.28 -0.84
Rate ratio (95% CI) 0.43 (0.29, 0.63) 0.49 (0.33, 0.74)
Trial 1 Trial 2
Benralizumab Placebo Benralizumab Placebo(N=267) (N=267) (N=239) (N=248)
Pre-bronchodilator 0.486 0.251 0.440 0.174
FEV1 mean change
Difference (95% CI) 0.235 (0.088, 0.382) 0.265 (0.115, 0.415)
Oral corticosteroid dose reduction trials
ZONDA (Trial 3), a placebo-controlled study, and PONENTE (Trial 6), a single arm, open-labelstudy, evaluated the effect of benralizumab on reducing the use of maintenance OCS.
In Trial 3, the primary endpoint was percent reduction from baseline of the final OCS dose during
Weeks 24 to 28, while maintaining asthma control. Table 5 summarises the study results for Trial 3.
Table 5. Effect of benralizumab on OCS dose reduction, Trial 3
Benralizumab Placebo(N=73) (N=75)
Wilcoxon rank sum test (primary analysis method)
Median % reduction in daily OCS dose from baseline (95% CI) 75 (60, 88) 25 (0, 33)
Wilcoxon rank sum test p-value <0.001
Proportional odds model (sensitivity analysis)
Percent reduction in OCS from baseline at Week 28≥90% reduction 27 (37%) 9 (12%)≥75% reduction 37 (51%) 15 (20%)≥50% reduction 48 (66%) 28 (37%)>0% reduction 58 (79%) 40 (53%)
No change or no decrease in OCS 15 (21%) 35 (47%)
Odds ratio (95% CI) 4.12 (2.22, 7.63)
Reduction in the daily OCS dose to 0 mg/day* 22 (52%) 8 (19%)
Odds ratio (95% CI) 4.19 (1.58, 11.12)
Reduction in the daily OCS dose to ≤5 mg/day 43 (59%) 25 (33%)
Odds ratio (95% CI) 2.74 (1.41, 5.31)
Exacerbation rate 0.54 1.83
Rate ratio (95% CI) 0.30 (0.17, 0.53)
Exacerbation rate requiring hospitalisation/emergency room0.02 0.32visit
Rate ratio (95% CI) 0.07 (0.01, 0.63)
* Only patients with an optimised baseline OCS dose of 12.5 mg or less were eligible to achieve a 100%reduction in OCS dose during the study.
Lung function, asthma symptom score, ACQ-6 and AQLQ(S)+12 were also assessed in Trial 3 andshowed results similar to those in Trials 1 and 2.
Trial 6 enrolled 598 adult patients with severe asthma (blood eosinophil count ≥150 cells/μL at entryor ≥300 cells/μL in the past 12 months if study entry count was <150 cells/μL) who were oralcorticosteroid-dependent. The primary endpoints were proportion of patients who eliminated OCSwhile maintaining asthma control and proportion of patients who achieved a final OCS dose less thanor equal to 5 mg while maintaining asthma control and taking into account adrenal function. Theproportion of patients who eliminated maintenance OCS was 62.9%. The proportion of patients whoachieved an OCS dose less than or equal to 5 mg (while maintaining asthma control and not limited byadrenal function) was 81.9%. Effects on OCS reduction were similar irrespective of blood eosinophilcount at study entry (including patients with blood eosinophils <150 cells/μL) and maintained over anadditional period of 24 to 32 weeks. The annualised exacerbation rate in Trial 6 was comparable tothat reported in previous trials.
Long-term extension trials
The long-term efficacy and safety of benralizumab was evaluated in a phase 3, 56-week extension trial
BORA (Trial 4). The trial enrolled 2 123 patients, 2 037 adults and 86 adolescent patients (aged12 years and older) from Trials 1, 2 and 3. Trial 4 assessed the long-term effect of benralizumab onannual exacerbation rate, lung function, ACQ-6, AQLQ(S)+12 and maintenance of OCS reduction atthe 2 dose regimens studied in the predecessor studies.
At the recommended dose regimen, the reduction in annual rate of exacerbations observed in theplacebo-controlled predecessor Trials 1 and 2 (in patients with baseline blood eosinophil counts≥300 cells/μL who were taking high-dose ICS) was maintained over the second year of treatment(Table 6). In patients who received benralizumab in predecessor Trials 1 and 2, 73% wereexacerbation-free in the extension Trial 4.
Table 6. Exacerbations over an extended treatment perioda
Placebob Benralizumab(N=338) (N=318)
Trial 1 & 2 Trial 1 & 2 Trial 4 Trial 1, 2 & 4c
Rate 1.23 0.65 0.48 0.56
a. Patients that entered Trial 4 from predecessor Trials 1 and 2 with baseline blood eosinophil counts≥300 cells/μL who were taking high-dose ICS.
b. Placebo patients in Trials 1 and 2 are included up to the end of the predecessor trial (Week 48 in Trial 1,
Week 56 in Trial 2).
c. Total duration of treatment: 104 - 112 weeks.
Similar maintenance of effect was observed throughout Trial 4 in lung function, ACQ-6 and
AQLQ(S)+12 (Table 7).
Table 7. Change from baseline for lung function, ACQ-6, and AQLQ(S)+12a
Trial 1 & 2 Trial 1 & 2 EOTc Trial 4 EOTd
Baselineb
Pre-bronchodilator FEV1 (L)n 318 305 290
Mean baseline (SD) 1.741 (0.621) -- --
Change from baseline (SD) e -- 0.343 (0.507) 0.404 (0.555)
ACQ-6n 318 315 296
Mean baseline (SD) 2.74 (0.90) -- --
Change from baseline (SD) e -- -1.44 (1.13) -1.47 (1.05)
AQLQ(S)+12n 307 306 287
Mean baseline (SD) 3.90 (0.99) -- --
Change from baseline (SD) e -- 1.58 (1.23) 1.61 (1.21)n=number of patients with data at timepoint. SD=standard deviation.
a. Baseline blood eosinophil counts ≥300 cells/μL and taking high-dose ICS: benralizumab administered at therecommended dose regimen.
b. Integrated analysis of Trial 1 and 2 baseline includes adults and adolescents.
c. Integrated analysis at End of Treatment (EOT) of Trial 1 (Week 48) and Trial 2 (Week 56).
d. EOT for Trial 4 was Week 48 (the last timepoint for adults and adolescent data).
e. Baseline is prior to benralizumab treatment in Trial 1 and 2.
Efficacy in Trial 4 was also evaluated in patients with baseline blood eosinophil counts <300 cells/µLand was consistent with Trials 1 and 2.
Maintenance of the reduction in daily OCS dose was also observed over the extension trial in patientsenrolled from Trial 3 (Figure 1).
Figure 1. Median percent reductions in daily OCS over time (Trial 3 and 4)a
Benra 30 mg q. 8 weeks
Trial 3 Trial 4n =
Week(s)
Median percent reduction
a. Predecessor Trial 3 patients who continued benralizumab treatment into Trial 4. Patients were permitted toenter a second extension trial after a minimum of 8 weeks in Trial 4 without completing the 56-weekextension period.
In Trial 5, a second long-term safety extension study (see section 4.8), the annualised exacerbation rate(0.47) in patients receiving the approved dose regimen was comparable to that reported in thepredecessor Trials 1, 2 (0.65) and 4 (0.48).
Eosinophilic granulomatosis with polyangiitis (EGPA)
The efficacy of benralizumab was evaluated in a randomised, double-blind, active-controlled,non-inferiority clinical trial of 52-weeks treatment duration, in patients aged 18 years and older with
EGPA. A total of 140 patients were randomised to receive either 30 mg of benralizumab or 300 mg ofmepolizumab administered subcutaneously every 4 weeks. Patients enrolled had a history of relapsingor refractory disease and were on stable OCS therapy (OCS; ≥7.5 to ≤50 mg/dayprednisolone/prednisone), with or without stable immunosuppressant therapy (excludingcyclophosphamide). The median baseline OCS daily dose was 10 mg and 36% were receivingimmunosuppressive therapy. The OCS dose was tapered at the discretion of the investigator. Patientswith active organ threatening or life-threatening EGPA were excluded from the trial.
Remission
The primary endpoint was the proportion of subjects in remission, defined as Birmingham Vasculitis
Activity Score (BVAS)=0 (no active vasculitis) plus prednisolone/prednisone dose ≤4 mg/day, at both
Week 36 and Week 48. As shown in Table 8, benralizumab demonstrated non-inferiority tomepolizumab for the primary endpoint. Results for accrued duration of remission and the componentsof remission are also shown in Table 8.
Table 8. Remission and components of remission in EGPA
Remission OCS≤4 mg/day BVAS=0(OCS≤4 mg/day +
BVAS=0)
Benraa Mepob Benraa Mepob Benraa Mepob
N=70 N=70 N=70 N=70 N=70 N=70
Patients in remission at both Weeks 36 and 48
Patients, n (%)c 40 (58) 40 (57) 42 (61) 41 (58) 58 (83) 59 (84)
Differences in 1.21 2.64 -1.17remission rate (%)c(95% CI) (-14.12, 16.53) (-12.67, 17.95) (-13.27, 10.94)(p-value) (0.88)d (0.74)d e (0.85)d e
Accrued duration over 52 weeks, n (%)0 weeksf 9 (13) 15 (21) 9 (13) 12 (17) 0 0>0 to <12 weeks 13 (19) 10 (14) 11 (16) 12 (17) 0 2 (3)12 to <24 weeks 8 (11) 8 (11) 9 (13) 8 (11) 2 (3) 2 (3)24 to <36 weeks 20 (29) 19 (27) 19 (27) 18 (26) 6 (9) 7 (10)≥36 weeks 20 (29) 18 (26) 22 (31) 20 (29) 62 (89) 59 (84)
N=number of patients in analysis.
a. Benralizumab (Benra) 30 mg administered every 4 weeks.
b. Mepolizumab (Mepo) 300 mg administered every 4 weeks.
c. Model adjusted percentages.
d. Used for superiority testing.
e. Not formally tested in a pre-specified multiplicity testing procedure.
f. Did not achieve remission at any point.
The proportion of patients achieving remission within the first 24 weeks of treatment and remaining inremission through Week 52 was 42% for benralizumab and 37% for mepolizumab (difference inresponder rate 5.54%, 95% CI: -9.30, 20.37, nominal p-value 0.46).
Using an alternative remission definition of BVAS=0 plus prednisolone/prednisone ≤7.5 mg/day, aconsistent efficacy between groups for these endpoints was observed.
Patients achieved the primary remission endpoint across the prespecified demographic and baselinecharacteristic subgroups.
Relapse
The hazard ratio for time to first relapse (vasculitis, asthma, or sino-nasal) was 0.98 (95% CI: 0.53,1.82, nominal p-value 0.95). Relapse was observed in 30% of patients on benralizumab and 30% ofpatients on mepolizumab. The annualised relapse rate was 0.50 for patients receiving benralizumabversus 0.49 for patients receiving mepolizumab (rate ratio 1.03, 95% CI: 0.56, 1.90, nominal p-value0.93). The types of relapse were consistent for patients receiving benralizumab or mepolizumab.
Oral corticosteroids
The average daily OCS dose during Weeks 48 to 52 is presented in Table 9. A 100% reduction in the
OCS dose was observed in 41% of patients receiving benralizumab compared to 26% of thosereceiving mepolizumab (difference 15.69%, 95% CI: 0.67, 30.71, nominal p-value 0.04).
Table 9. Average daily oral corticosteroid dose during weeks 48 to 52 in EGPA
Number (%) of Patients
Benralizumaba (N=70) Mepolizumabb (N=70)0 mg 29 (41) 19 (27)>0 to ≤4.0 mg 19 (27) 30 (43)>4.0 to ≤7.5 mg 15 (21) 13 (19)>7.5 mg 7 (10) 8 (11)
N=number of patients in analysis.
a. Benralizumab 30 mg administered every 4 weeks.
b. Mepolizumab 300 mg administered every 4 weeks.
Asthma Control Questionnaire-6 (ACQ-6)
The ACQ-6 mean change from baseline was -0.57 for benralizumab versus -0.61 for mepolizumab(difference 0.05, 95% CI: -0.18, 0.27, nominal p-value 0.67).
ImmunogenicityOverall, treatment-emergent anti-drug antibody (ADA) response developed in 107 out of 809 (13%)patients with asthma treated with benralizumab at the recommended dose regimen during the 48 to56 week treatment period of the phase 3 placebo-controlled exacerbation trials. Most antibodies wereneutralising and persistent. Anti-benralizumab antibodies were associated with increased clearance ofbenralizumab and increased blood eosinophil levels in patients with high ADA titres compared toantibody negative patients; in rare cases, blood eosinophil levels returned to pre-treatment levels.
Based on current patient follow-up, no evidence of an association of ADA with efficacy or safety wasobserved.
Following a second year of treatment of these patients with asthma from the phase 3placebo-controlled trials, an additional 18 out of 510 (4%) had newly developed treatment-emergentantibodies. Overall, in patients who were ADA positive in the predecessor trials, titres remained stableor declined in the second year of treatment. No evidence of an association of ADA with efficacy orsafety was observed.
In patients with EGPA, treatment-emergent ADA response developed in 6 out of 67 (9%) patientstreated with benralizumab during the Phase 3 active-controlled 52-week treatment period. Neutralisingantibody activity was detected in one of the ADA positive patients.
Paediatric populationAsthma
There were 108 adolescents aged 12 to 17 with asthma enrolled in the phase 3 trials (Trial 1: n=53,
Trial 2: n=55). Of these, 46 received placebo, 40 received benralizumab every 4 weeks for 3 doses,followed by every 8 weeks thereafter, and 22 received benralizumab every 4 weeks. In these trials, theasthma exacerbation rate in adolescent patients treated with benralizumab administered at therecommended dose regimen was 0.70 (n=40, 95% CI: 0.42, 1.18) compared to 0.41 for placebo (n=46,95% CI: 0.23, 0.73) [rate ratio 1.70, 95% CI: 0.78, 3.69].
Adolescent patients aged 12 to 17 (n=86) from Trials 1 and 2 continued treatment with benralizumabin Trial 4 for up to 108 weeks. Efficacy and safety were consistent with the predecessor trials.
In an open-label, uncontrolled pharmacokinetic and pharmacodynamic study of 48 weeks duration in alimited number of patients 6 to 11 years (n=28) with uncontrolled severe asthma, the magnitude ofblood eosinophil depletion was similar to adults and adolescents.
No conclusion can be drawn regarding asthma efficacy in the paediatric population (see section 4.2).
The European Medicines Agency has deferred the obligation to submit the results of studies withbenralizumab in one or more subsets of the paediatric population in asthma (see section 4.2 forinformation on paediatric use).
Eosinophilic granulomatosis with polyangiitis (EGPA)
The European Medicines Agency has deferred the obligation to submit the results of studies withbenralizumab in one or more subsets of the paediatric population in EGPA (see section 4.2 forinformation on paediatric use).