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Dose Ranging Efficacy And Safety With Mepolizumab in Severe Asthma (DREAM)

18. ledna 2018 aktualizováno: GlaxoSmithKline

A Multicenter, Randomized, Double-blind, Placebo-controlled, Parallel Group, Dose Ranging Study to Determine the Effect of Mepolizumab on Exacerbation Rates in Subjects With Severe Uncontrolled Refractory Asthma

The purpose of this study is to show whether mepolizumab given every 4 weeks intravenously (i.v.) can reduce the frequency of asthma exacerbations in subjects with severe asthma despite receiving high doses of standard asthma medications. The study will look at different doses of mepolizumab in comparison to a placebo.

Přehled studie

Detailní popis

A double-blind, placebo-controlled study to evaluate the efficacy, safety and pharmacodynamics of three doses (75 mg, 250 mg and 750 mg) of mepolizumab intravenous (i.v.) administered every 4 weeks compared with placebo over a 52-week treatment period in subjects with severe uncontrolled refractory asthma. Efficacy will be measured by the frequency of asthma exacerbations. In addition lung function, rescue medication usage, daily symptoms, asthma control score, asthma quality of life score and withdrawals due to asthma exacerbations will be assessed. Safety will be assessed by adverse events, clinical laboratory evaluations, ECGs, immunogenicity and vital signs. Pharmacodynamics will be assessed by eosinophil levels in blood, serum IL-5 and eosinophil levels in induced sputum.

Typ studie

Intervenční

Zápis (Aktuální)

621

Fáze

  • Fáze 2

Kontakty a umístění

Tato část poskytuje kontaktní údaje pro ty, kteří studii provádějí, a informace o tom, kde se tato studie provádí.

Studijní místa

      • Buenos Aires, Argentina, 1425
        • GSK Investigational Site
      • Ciudad Autónoma de Buenos Aires, Argentina, C1426ABP
        • GSK Investigational Site
      • Mendoza, Argentina, M5500CCG
        • GSK Investigational Site
      • Tucuman, Argentina, 4000
        • GSK Investigational Site
    • Buenos Aires
      • Mar del Plata, Buenos Aires, Argentina, B7600FZN
        • GSK Investigational Site
    • New South Wales
      • New Lambton, New South Wales, Austrálie, 2305
        • GSK Investigational Site
    • South Australia
      • Adelaide, South Australia, Austrálie, 5000
        • GSK Investigational Site
    • Victoria
      • Clayton, Victoria, Austrálie, 3168
        • GSK Investigational Site
      • Melbourne, Victoria, Austrálie, 3004
        • GSK Investigational Site
    • Western Australia
      • Nedlands, Western Australia, Austrálie, 6009
        • GSK Investigational Site
      • Santiago, Chile, 8380453
        • GSK Investigational Site
      • Talcahuano, Chile, 4270918
        • GSK Investigational Site
    • Región Metro De Santiago
      • Puente Alto - Santiago, Región Metro De Santiago, Chile, 8207257
        • GSK Investigational Site
    • Valparaíso
      • Valparaiso, Valparaíso, Chile, 2341131
        • GSK Investigational Site
      • Clamart, Francie, 92140
        • GSK Investigational Site
      • Marseille cedex 20, Francie, 13915
        • GSK Investigational Site
      • Montpellier, Francie, 34295
        • GSK Investigational Site
      • Nantes, Francie, 44093
        • GSK Investigational Site
      • Saint Pierre cedex, Francie, 97448
        • GSK Investigational Site
    • Alberta
      • Calgary, Alberta, Kanada, T2N 4Z6
        • GSK Investigational Site
    • British Columbia
      • Vancouver, British Columbia, Kanada, V5Z 1M9
        • GSK Investigational Site
    • Ontario
      • Mississauga, Ontario, Kanada, L5A 3V4
        • GSK Investigational Site
      • Mississauga, Ontario, Kanada, L5M 2V8
        • GSK Investigational Site
    • Quebec
      • Quebec City, Quebec, Kanada, G1V 4G5
        • GSK Investigational Site
      • Bucheon-si,, Korejská republika, 420-767
        • GSK Investigational Site
      • Cheongju, Chungcheongbuk-do, Korejská republika, 361-711
        • GSK Investigational Site
      • Seoul, Korejská republika, 152-703
        • GSK Investigational Site
      • Seoul, Korejská republika, 133--792
        • GSK Investigational Site
      • Suwon, Kyonggi-do, Korejská republika, 443-721
        • GSK Investigational Site
      • Berlin, Německo, 10367
        • GSK Investigational Site
      • Berlin, Německo, 10717
        • GSK Investigational Site
      • Berlin, Německo, 14050
        • GSK Investigational Site
      • Berlin, Německo, 12203
        • GSK Investigational Site
    • Brandenburg
      • Ruedersdorf, Brandenburg, Německo, 15562
        • GSK Investigational Site
    • Hessen
      • Frankfurt, Hessen, Německo, 60596
        • GSK Investigational Site
      • Frankfurt am Main, Hessen, Německo, 60596
        • GSK Investigational Site
    • Rheinland-Pfalz
      • Mainz, Rheinland-Pfalz, Německo, 55131
        • GSK Investigational Site
    • Sachsen-Anhalt
      • Magdeburg, Sachsen-Anhalt, Německo, 39112
        • GSK Investigational Site
    • Schleswig-Holstein
      • Luebeck, Schleswig-Holstein, Německo, 23552
        • GSK Investigational Site
      • Bialystok, Polsko, 15-276
        • GSK Investigational Site
      • Lodz, Polsko, 90-153
        • GSK Investigational Site
      • Warszawa, Polsko, 01-138
        • GSK Investigational Site
      • Wroclaw, Polsko, 54-239
        • GSK Investigational Site
      • Zawadzkie, Polsko, 47-120
        • GSK Investigational Site
      • Zgierz, Polsko, 95-100
        • GSK Investigational Site
      • Bucharest, Rumunsko, 050159
        • GSK Investigational Site
      • Bucuresti, Rumunsko, 70000
        • GSK Investigational Site
      • Iasi, Rumunsko, 700115
        • GSK Investigational Site
      • Targu Mures, Rumunsko, 540143
        • GSK Investigational Site
      • Barnaul, Ruská Federace, 656 045
        • GSK Investigational Site
      • Chelyabinsk, Ruská Federace, 454106
        • GSK Investigational Site
      • Kazan, Ruská Federace, 420015
        • GSK Investigational Site
      • Moscow, Ruská Federace, 105 077
        • GSK Investigational Site
      • Moscow, Ruská Federace, 115478
        • GSK Investigational Site
      • Moscow, Ruská Federace, 123 182
        • GSK Investigational Site
      • Saint-Petersburg, Ruská Federace, 194354
        • GSK Investigational Site
      • St. Petersburg, Ruská Federace, 198216
        • GSK Investigational Site
      • Tomsk, Ruská Federace, 634001
        • GSK Investigational Site
      • London, Spojené království, E1 2AT
        • GSK Investigational Site
      • London, Spojené království, SW3 6HP
        • GSK Investigational Site
      • Manchester, Spojené království, M23 9LT
        • GSK Investigational Site
      • Southampton, Spojené království, SO16 6YD
        • GSK Investigational Site
    • Leicestershire
      • Leicester, Leicestershire, Spojené království, LE3 9QP
        • GSK Investigational Site
    • California
      • Long Beach, California, Spojené státy, 90808
        • GSK Investigational Site
      • Los Angeles, California, Spojené státy, 90095
        • GSK Investigational Site
      • Riverside, California, Spojené státy, 92506
        • GSK Investigational Site
      • San Diego, California, Spojené státy, 92103-8415
        • GSK Investigational Site
    • Colorado
      • Denver, Colorado, Spojené státy, 80206
        • GSK Investigational Site
    • Connecticut
      • New Haven, Connecticut, Spojené státy, 06510
        • GSK Investigational Site
    • Georgia
      • Albany, Georgia, Spojené státy, 31707
        • GSK Investigational Site
      • Columbus, Georgia, Spojené státy, 31904
        • GSK Investigational Site
    • Kentucky
      • Lexington, Kentucky, Spojené státy, 40508
        • GSK Investigational Site
    • Missouri
      • Saint Louis, Missouri, Spojené státy, 63110
        • GSK Investigational Site
    • North Carolina
      • Winston-Salem, North Carolina, Spojené státy, 27103
        • GSK Investigational Site
    • Ohio
      • Canton, Ohio, Spojené státy, 44718
        • GSK Investigational Site
      • Cleveland, Ohio, Spojené státy, 44195
        • GSK Investigational Site
    • Oklahoma
      • Oklahoma City, Oklahoma, Spojené státy, 73103
        • GSK Investigational Site
    • Pennsylvania
      • Hershey, Pennsylvania, Spojené státy, 17033
        • GSK Investigational Site
      • Pittsburgh, Pennsylvania, Spojené státy, PA 15213
        • GSK Investigational Site
    • South Carolina
      • Charleston, South Carolina, Spojené státy, 29406
        • GSK Investigational Site
    • Tennessee
      • Nashville, Tennessee, Spojené státy, 37203
        • GSK Investigational Site
    • Texas
      • Boerne, Texas, Spojené státy, 78006
        • GSK Investigational Site
      • Houston, Texas, Spojené státy, 77054
        • GSK Investigational Site
    • Wisconsin
      • Madison, Wisconsin, Spojené státy, 53792
        • GSK Investigational Site
      • Cherkassy, Ukrajina, 18009
        • GSK Investigational Site
      • Dnipropetrovsk, Ukrajina, 49006
        • GSK Investigational Site
      • Dnipropetrovsk, Ukrajina, 49051
        • GSK Investigational Site
      • Dnipropetrovsk, Ukrajina, 49027
        • GSK Investigational Site
      • Donetsk, Ukrajina, 83003
        • GSK Investigational Site
      • Donetsk, Ukrajina, 83099
        • GSK Investigational Site
      • Kharkiv, Ukrajina, 61035
        • GSK Investigational Site
      • Kiev, Ukrajina, 03680
        • GSK Investigational Site
      • Kyiv, Ukrajina, 03038
        • GSK Investigational Site
      • Kyiv, Ukrajina, 03115
        • GSK Investigational Site
      • Mykolayiv, Ukrajina, 54003
        • GSK Investigational Site

Kritéria účasti

Výzkumníci hledají lidi, kteří odpovídají určitému popisu, kterému se říká kritéria způsobilosti. Některé příklady těchto kritérií jsou celkový zdravotní stav osoby nebo předchozí léčba.

Kritéria způsobilosti

Věk způsobilý ke studiu

12 let až 65 let (Dítě, Dospělý, Starší dospělý)

Přijímá zdravé dobrovolníky

Ne

Pohlaví způsobilá ke studiu

Všechno

Popis

Inclusion Criteria:

  • Male or female
  • Aged 12 to 65 years inclusive
  • Minimum weight 45kg
  • Clinical features of severe refractory asthma
  • Well documented requirement for high dose inhaled corticosteroids (ICS) [i.e. >= 880mcg/day fluticasone propionate or equivalent daily] for at least 12 months
  • Using additional controller medication in addition to high dose ICS for at least 12 months
  • Persistent airflow obstruction indicated by a pre-bronchodilator FEV1<80% predicted at visit 1 or 2 or peak flow diurnal variability of >20% on 3 or more days during the run-in
  • Airway inflammation which is likely to be eosinophilic in nature demonstrated by either raised peripheral blood eosinophils (>=300/microL), sputum eosinophils (>=3%), exhaled nitric oxide (>=50ppb) or prompt deterioration of asthma control following a <=25% reduction in regular maintenance dose of inhaled or oral corticosteroids (OCS)
  • History of 2 or more exacerbations requiring systemic corticosteroids in the previous 12 months
  • Evidence of asthma documented by airway reversibility, airway hyperresponsiveness or airflow variability
  • ECG assessment demonstrating QTc<450msec or QTc<480msec for patients with bundle branch block
  • Liver function tests demonstrating ALT<2xUpper Limit of Normal (ULN), AST<2xULN, Alk Phos <=1.5xULN, bilirubin <=1.5xULN
  • Female of non-child-bearing potential or child-bearing potential with a negative pregnancy test at screening and prepared to agree to an acceptable method of contraception
  • Able to give written informed consent
  • Able to read, comprehend and write at a sufficient level to complete study materials

Exclusion Criteria:

  • Current smokers or smoking history of >=10 pack years
  • Clinically important lung condition other than asthma
  • Diagnosis of malignancy or in the process of investigation
  • Unstable liver disease
  • Churg-Strauss syndrome
  • Using methotrexate, troleandomycin, oral gold, cyclosporine, azathioprine or any experimental anti-inflammatory therapy within 3 months of screening
  • Omalizumab (Xolair) or any other biological for the treatment of inflammatory disease within 6 months of Visit 1
  • Regular use of oral or systemic corticosteroids for diseases other than asthma within 12 months or any intra-articular, short-acting intramuscular corticosteroid within 1 month or intramuscular, long-acting depot corticosteroid within 3 months
  • Allergy/intolerance to the excipients in the mepolizumab formulation
  • Any investigational drug within 30 days or 5 terminal half-lives, whichever is longer
  • Pregnant or breastfeeding or planning to become pregnant
  • Clinically significant disease which is uncontrolled with standard treatment
  • History of alcohol misuse or substance abuse
  • Parasitic infestation within previous 6 months
  • Known immunodeficiency
  • Unable to follow instructions, use the electronic diary or peak flow meter
  • Known evidence of lack of adherence to controller medications and/or follow physician's recommendations
  • Previous participation in a study of mepolizumab and received study medication within 90 days

Studijní plán

Tato část poskytuje podrobnosti o studijním plánu, včetně toho, jak je studie navržena a co studie měří.

Jak je studie koncipována?

Detaily designu

  • Primární účel: Léčba
  • Přidělení: Randomizované
  • Intervenční model: Paralelní přiřazení
  • Maskování: Čtyřnásobek

Zbraně a zásahy

Skupina účastníků / Arm
Intervence / Léčba
Aktivní komparátor: Mepolizumab 750mg
Mepolizumab 750mcg i.v. every 4 weeks
Mepolizumab 750mg every four weeks by i.v.
Aktivní komparátor: Mepolizumab 250mg
Mepolizumab 250mcg i.v. every 4 weeks
Mepolizumab 250mg every four weeks by i.v.
Aktivní komparátor: Mepolizumab 75mg
Mepolizumab 75mcg i.v. every 4 weeks
Mepolizumab 75mg every four weeks by i.v.
Komparátor placeba: Placebo
Placebo saline every 4 weeks i.v.
Placebo saline every four weeks by i.v.

Co je měření studie?

Primární výstupní opatření

Měření výsledku
Popis opatření
Časové okno
Number of Clinically Significant Exacerbations of Asthma Per Year
Časové okno: From randomization (Week 0) to Week 52 or early withdrawal (EW)
Clinically significant exacerbations of asthma are defined as worsening of asthma which required use of oral/systemic corticosteroids (for participants on maintenance oral corticosteroids [OCS], an exacerbation requiring OCS is defined as the use of oral/systemic corticosteroids at least double the existing maintenance dose for at least 3 days) and/or hospitalization and/or emergency department (ED) visit. The frequency of clinically significant exacerbations of asthma over the 52-week treatment period is expressed as exacerbation rate per year. Analysis of the number of exacerbations was performed using a negative binomial regression model with covariates of treatment group, Baseline (BL) maintenance OCS therapy (OCS vs. no OCS), region, exacerbations in the year prior to the study (as an ordinal variable) and BL percent (%) predicted forced expiratory volume in 1 second (FEV1), and with logarithm of time on treatment as an offset variable
From randomization (Week 0) to Week 52 or early withdrawal (EW)

Sekundární výstupní opatření

Měření výsledku
Popis opatření
Časové okno
Time to First Clinically Significant Exacerbation Requiring Oral or Systemic Corticosteroid, Hospitalization and/ or ED Visit
Časové okno: From randomization (Week 0) to Week 52 or EW
Clinically significant exacerbations of asthma are defined as worsening of asthma which required use of oral/systemic corticosteroids (for participants on maintenance OCS, an exacerbation requiring OCS is defined as the use of oral/systemic corticosteroids at least double the existing maintenance dose for at least 3 days) and/or hospitalization and/or ED visit. Kaplan-Meier estimates of the probability of an exacerbation is expressed as percentage of participants with an exacerbation over time (by Week 16, Week 32 and Week 52).
From randomization (Week 0) to Week 52 or EW
Number of Exacerbations Requiring Hospitalization (Including Intubation and Admittance to an Intensive Care Unit [ICU]) or ED Visit Per Year
Časové okno: From randomization (Week 0) to Week 52 or EW
The frequency of exacerbations of asthma requiring hospitalization (including intubation and admittance to an intensive care unit [ICU]) or ED visit over the 52-week treatment period is expressed as exacerbation rate per year. Analysis of the number of exacerbations was performed using a negative binomial regression model with covariates of treatment group, Baseline (BL) maintenance OCS therapy (OCS vs. no OCS), region, exacerbations in the year prior to the study (as an ordinal variable) and BL percent (%) predicted forced expiratory volume in 1 second (FEV1), and with logarithm of time on treatment as an offset variable.
From randomization (Week 0) to Week 52 or EW
Time to First Exacerbation Requiring Hospitalization or ED Visit
Časové okno: From randomization (Week 0) to Week 52 or EW
Exacerbations of asthma requiring hospitalization or ED visit were assessed. Kaplan-Meier estimates of the probability of an exacerbation is expressed as percentage of participants with an exacerbation over time (by Week 16, Week 32 and Week 52).
From randomization (Week 0) to Week 52 or EW
Number of All Recorded Exacerbations Per Year
Časové okno: From randomization (Week 0) to Week 52 or EW
Clinically significant exacerbations (ex) of asthma are defined as worsening of asthma which required use of oral/systemic corticosteroids (for par. on maintenance OCS, an ex requiring OCS is defined as the use of oral/systemic corticosteroids at least double the existing maintenance dose for at least 3 days) and/or hospitalization and/or ED visit. In the case, an event described as an ex was not associated with a deterioration in >=1 of the objectives of eDiary parameters, the investigator (inv) provided an explanation to support the decision for defining the event as an ex. All recorded ex were defined as those recorded by inv, regardless of the outcome of the ex review process. Analysis was performed using Negative Binomial regression model with covariates of treatment group, BL maintenance OCS therapy (OCS vs. no OCS), region, ex in the year prior to the study (as an ordinal variable) and BL % predicted FEV1, and with logarithm of time on treatment as an offset variable.
From randomization (Week 0) to Week 52 or EW
Time to First All Recorded Exacerbation
Časové okno: From randomization (Week 0) to Week 52 or EW
All recorded exacerbations are defined as those recorded by investigators, regardless of the outcome of the exacerbation review process. In the case, an event described as an exacerbation was not associated with a deterioration in at least one of the objectives of eDiary parameters, the investigator provided an explanation to support the decision for defining the event as an exacerbation. Kaplan-Meier estimates of the probability of an exacerbation is expressed as percentage of participants with an exacerbation over time (by week 16, week 32 and week 52).
From randomization (Week 0) to Week 52 or EW
Mean Change From Baseline in Clinic Pre-bronchodilator FEV1 Over the 52-week Treatment Period
Časové okno: From Baseline up to Week 52 or EW
FEV1 is defined as the volume of air forcefully expelled from the lungs in 1 second. Pre-bronchodilator FEV1 measurements were taken by spirometry at each clinic visit. The change from Baseline is defined as the difference between the value of the endpoint at the time point of interest and the Baseline value. Analysis was performed using mixed model repeated measures with covariates of Baseline, region, Baseline maintenance OCS therapy (OCS vs. no OCS), exacerbations in the year prior to the study (as an ordinal variable), treatment and visit, plus interaction terms for visit by Baseline and visit by treatment group.
From Baseline up to Week 52 or EW
Mean Change From Baseline in Clinic Post-bronchodilator FEV1 Over the 52-week Treatment Period
Časové okno: From Baseline up to Week 52 or EW
FEV1 is defined as the volume of air forcefully expelled from the lungs in 1 second. Post-bronchodilator FEV1 measurements were taken by spirometry at Baseline, Week 16, Week 32 and Week 52. Post bronchodilator values were recorded following reversibility testing, using the maximum post bronchodilator method. Participants unable to achieve >=12% reversibility and 200 mL change at Visit 1, reversibility test was repeated at Visit 2. These procedures to achieve the maximum post-bronchodilator are generated by the Asthma Clinical Research Network. The change from Baseline is defined as the difference between the value of the endpoint at the time point of interest and the Baseline value. Analysis was performed using mixed model repeated measures with covariates of Baseline, region, Baseline maintenance OCS therapy (OCS vs. no OCS), exacerbations in the year prior to the study (as an ordinal variable), treatment and visit, plus interaction terms for visit by Baseline and visit by treatment
From Baseline up to Week 52 or EW
Mean Change From Baseline in Asthma Control Questionnaire (ACQ) Score Over the 52-week Treatment Period
Časové okno: From Baseline up to Week 52 or EW
The ACQ-6 is a six-item questionnaire. The six questions enquire about the frequency and/or severity of symptoms (nocturnal awakening on waking in the morning, activity limitation, shortness of breath, wheeze) and use of short-acting bronchodilator over the previous week. The response options for all these questions consist of a 0 (no impairment/limitation) to 6 (total impairment/ limitation) scale. The overall ACQ score is calculated as the mean of the 6 questions and therefore ranges between 0 (totally controlled) and 6 (severely uncontrolled). Change from BL is defined as the difference between the value of the endpoint at the time point of interest and BL value. Analysis was performed using mixed model repeated measures with covariates of BL, region, BL maintenance OCS therapy (OCS vs. no OCS), exacerbations in the year prior to the study (as an ordinal variable), BL % predicted FEV1, treatment and visit, plus interaction terms for visit by BL and visit by treatment group.
From Baseline up to Week 52 or EW

Spolupracovníci a vyšetřovatelé

Zde najdete lidi a organizace zapojené do této studie.

Sponzor

Publikace a užitečné odkazy

Osoba odpovědná za zadávání informací o studiu tyto publikace poskytuje dobrovolně. Mohou se týkat čehokoli, co souvisí se studiem.

Obecné publikace

Termíny studijních záznamů

Tato data sledují průběh záznamů studie a předkládání souhrnných výsledků na ClinicalTrials.gov. Záznamy ze studií a hlášené výsledky jsou před zveřejněním na veřejné webové stránce přezkoumány Národní lékařskou knihovnou (NLM), aby se ujistily, že splňují specifické standardy kontroly kvality.

Hlavní termíny studia

Začátek studia

1. listopadu 2009

Primární dokončení (Aktuální)

23. března 2012

Dokončení studie (Aktuální)

23. března 2012

Termíny zápisu do studia

První předloženo

22. října 2009

První předloženo, které splnilo kritéria kontroly kvality

22. října 2009

První zveřejněno (Odhad)

23. října 2009

Aktualizace studijních záznamů

Poslední zveřejněná aktualizace (Aktuální)

24. ledna 2018

Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality

18. ledna 2018

Naposledy ověřeno

1. ledna 2018

Více informací

Termíny související s touto studií

Plán pro data jednotlivých účastníků (IPD)

Plánujete sdílet data jednotlivých účastníků (IPD)?

Ano

Popis plánu IPD

Patient-level data for this study will be made available through www.clinicalstudydatarequest.com following the timelines and process described on this site.

Studijní data/dokumenty

  1. Formulář komentované zprávy o případu
    Identifikátor informace: 112997
    Komentáře k informacím: For additional information about this study please refer to the GSK Clinical Study Register
  2. Formulář informovaného souhlasu
    Identifikátor informace: 112997
    Komentáře k informacím: For additional information about this study please refer to the GSK Clinical Study Register
  3. Plán statistické analýzy
    Identifikátor informace: 112997
    Komentáře k informacím: For additional information about this study please refer to the GSK Clinical Study Register
  4. Protokol studie
    Identifikátor informace: 112997
    Komentáře k informacím: For additional information about this study please refer to the GSK Clinical Study Register
  5. Soubor dat jednotlivých účastníků
    Identifikátor informace: 112997
    Komentáře k informacím: For additional information about this study please refer to the GSK Clinical Study Register
  6. Specifikace datové sady
    Identifikátor informace: 112997
    Komentáře k informacím: For additional information about this study please refer to the GSK Clinical Study Register
  7. Zpráva o klinické studii
    Identifikátor informace: 112997
    Komentáře k informacím: For additional information about this study please refer to the GSK Clinical Study Register

Tyto informace byly beze změn načteny přímo z webu clinicaltrials.gov. Máte-li jakékoli požadavky na změnu, odstranění nebo aktualizaci podrobností studie, kontaktujte prosím register@clinicaltrials.gov. Jakmile bude změna implementována na clinicaltrials.gov, bude automaticky aktualizována i na našem webu .

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