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. 2022 Jul 12;2022(7):CD010834. doi: 10.1002/14651858.CD010834.pub4
Study Reason for exclusion
Albers 2016 Post‐hoc analysis of observational study
Albers 2020 Data pooled from 2 studies, also post hoc analysis looking at participants grouped by prior omalizumab use, which is not a subgroup prespecified in our protocol
Alvarez‐Cuesta 1994 Intervention used in study (cat extract immunotherapy) is not anti‐IL‐5 therapy
Armentia 1992 Intervention used in study (immunotherapy) is not anti‐IL‐5 therapy
Austin 2016 Aggregation of 2 clinical trials
Austin 2016a Not an RCT (analysis of the characteristics of patients that entered 2 trials of mepolizumab)
Ayres 2004 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Bardford 2018 Post hoc analysis of mepolizumab study (MUSCA, Chupp 2017), looking at participants grouped by prior omalizumab use, which is not a subgroup prespecified in our protocol.
Bel 2014 Focus of trial is on steroid reduction and therefore does not meet our predefined inclusion criteria
Berger 2003 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Bernstein 2020a Not asthma (wrong disease group)
Bjermer 2017 Only pooled data (from > 1 RCT) presented
Blanken 2012 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Blanken 2013 Intervention used in study (pavilizumab) is not anti‐IL‐5 therapy
Bleecker 2018a Data pooled from 2 studies
Bleecker 2018b Only pooled data (from > 1 RCT) presented
Boulet 1997 Intervention used in study (anti‐IgE antibody e25) is not anti‐IL‐5 therapy
Bourdin 2018 Post hoc analysis of reslizumab study looking at patients grouped by presence or absence of allergen‐specific IgE, which is not a subgroup prespecified in our protocol.
Bourdin 2020 This is not an RCT (it is a type of meta‐analysis of other RCTs)
Bousquet 2004 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Bousquet 2011 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Brightling 2014 Intervention used in study (tralokinumab) is not anti‐IL‐5 therapy
Brown 2007 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Brusselle 2016 Aggregation of 2 clinical trials
Brusselle 2017 Data pooled from 2 studies, also post hoc analysis looking at participants grouped by baseline step 4/5 therapy, which is not a subgroup prespecified in our protocol.
Bryant 1975a Not a RCT
Bryant 1975b Not a RCT
Buhl 2000a Intervention used in study (rhumab‐25) is not anti‐IL‐5 therapy
Buhl 2000b Intervention used in study (rhumab‐25) is not anti‐IL‐5 therapy
Buhl 2002 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Bush 1985 Intervention used in study (soybean oil) is not anti‐IL‐5 therapy
Busse 2001 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Busse 2008 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Busse 2015 Intervention used in study (tralokinumab) is not anti‐IL‐5 therapy
Buttner 2003 Treatment < 16 weeks
Caffarelli 2000 Intervention used in study (immunotherapy) is not anti‐IL‐5 therapy
Canvin 2016 Aggregation of 2 clinical trials
Carr 2017 Data pooled from 2 studies
Carr 2019 Only pooled data (from > 1 RCT) presented
Castro 2011 < 16 weeks in length
Castro 2014 Intervention used in study (dupilumab) is not anti‐IL‐5 therapy
Castro 2018 Data pooled from 2 studies, also post hoc analysis looking at participants grouped by whether screening and baseline eosinophils > 400 or not, which is not a subgroup prespecified in our protocol
Chandra 1989 Intervention used in study (various foods) is not anti‐IL‐5 therapy
Chanez 2017 Only pooled data (from > 1 RCT) presented
Chanez 2017a Only pooled data (from > 1 RCT) presented
Chanez 2018 Open‐label extension not an RCT
Chanez 2019 Post hoc analysis of reslizumab study comparing participants who didn’t have a blood eosinophil response to reslizumab to those who did, which is not a subgroup prespecified in our analysis
Chauhan 2017 Only pooled data (from > 1 RCT) presented
Chervinsky 2003 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Chipps 2017 Pooled data only (from SIROCCO (Bleecker 2016) and CALIMA FitzGerald 2016) studies; data are already in the analysis)
Chipps 2018 Only pooled data (from > 1 RCT) presented
Chipps 2019 Only pooled data (from > 1 RCT) presented
Chipps 2020 Only pooled data (from > 1 RCT) presented
Clavel 1998 Intervention used in study (immunotherapy) is not anti‐IL‐5 therapy
Corren 2003 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Corren 2010 Intervention used in study (il‐4r alpha antagonist) is not anti‐IL‐5 therapy
Cullell‐Young 2002 Not a RCT
Dasgupta 2016 Participants did not have a diagnosis of asthma (COPD patients)
De Boever 2014 Intervention used in study (anti‐IL‐13 mab) is not anti‐IL‐5 therapy
Djukanovic 2004 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
DuBuske 2018 Data pooled from 2 studies
Ebner 1989 Intervention used in study (immunotherapy) is not anti‐IL‐5 therapy
Eckman 2010 Intervention used in study (immunotherapy) is not anti‐IL‐5 therapy
El‐Nawawy 2000 Not a RCT
EUCTR2012‐004385‐17‐BE The study participants did not have asthma
EUCTR2015‐001152‐29‐BE Not an RCT and endpoints are not applicable as this is a long‐term access programme
EUCTR2016‐001831‐10‐NL No placebo arm/single treatment arm and treatment duration < 16 weeks
EUCTR2016‐002405‐19‐DE Participants do not have a diagnosis of asthma, no placebo arm, treatment duration < 16 weeks
EUCTR2017‐003958‐16‐NL Treatment duration < 16 weeks (12 weeks)
Fahy 1997 Intervention used in study (anti‐IgE) is not anti‐IL‐5 therapy
Fahy 1999 Intervention used in study (anti‐IgE) is not anti‐IL‐5 therapy
Ferguson 2016a Benralizumab for mild to moderate, persistent asthma: the BISE phase III study ‐ duration < 16 weeks (12 weeks)
Ferguson 2016b Treatment duration < 16 weeks in length
Ferguson 2017 Study duration < 16 weeks (12 weeks)
Finn 2003 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
FitzGerald 2017a Post hoc analysis of CALIMA (FitzGerald 2016), benralizumab study looking at the subset of patients from Japan, which is not a subgroup prespecified in our protocol.
FitzGerald 2017b Only pooled data (from > 1 RCT) presented
FitzGerald 2018 Only pooled data (from > 1 RCT) presented
Fitzgerald 2019 2‐year safety study including 1 year in RCT (3 studies pooled) and 1 year open‐label extension
Flood‐Page 2003 Treatment < 16 weeks
Flood‐Page 2007 Treatment < 16 weeks
Frew 1998 Intervention used in study (anti‐IgE) is not anti‐IL‐5 therapy
Garcia 2013 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Garin 2019 Only pooled data (from > 1 RCT) presented
Gauvreau 2011 Intervention used in study ( anti‐IL‐13) is not anti‐IL‐5 therapy
Gauvreau 2014a Intervention used in study (quilizumab) is not anti‐IL‐5 therapy
Gauvreau 2014b Intervention used in study (anti‐tslp) is not anti‐IL‐5 therapy
Gauvreau 2014c Intervention used in study (OX40L antagonist) is not anti‐IL‐5 therapy
Gauvreau 2015a Intervention used in study (ligelizumab) is not anti‐IL‐5 therapy
Gauvreau 2015b Intervention used in study (ligelizumab) is not anti‐IL‐5 therapy
Gevaert 2013 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Gibson 2021 Wrong study design
Goldman 2017 Only pooled data (from > 1 RCT) presented
Gopalan 2017a Data pooled from 2 studies
Gopalan 2017b Data pooled from 2 studies
Gordon 1972 Intervention used in study is not anti‐IL‐5 therapy
Greenberg 1991 Participants do not have a diagnosis of asthma
Gunsoy 2016 Not a randomised, placebo‐controlled trial
Han 2009 Intervention used in study (jade screen powder) is not anti‐IL‐5 therapy
Hanania 2011 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Hanania 2013 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Hanania 2014 Intervention used in study (lebrikizumab) is not anti‐IL‐5 therapy
Hanania 2015 Intervention used in study (lebrikizumab) is not anti‐IL‐5 therapy
Harris 2016 Intervention used in study (quilizumab) is not anti‐IL‐5 therapy
Hendeles 2015 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Hickey 2019 Only pooled data (from > 1 RCT) presented
Hill 1982 Intervention used in study (immunotherapy) is not anti‐IL‐5 therapy
Hodsman 2013 Intervention used in study ( anti‐IL‐13) is not anti‐IL‐5 therapy
Holgate 2004 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Hoshino 2012 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Howarth 2020 Study focused on nasal polyps rather than asthma
Humbert 2005 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Humbert 2008 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Humbert 2009 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Humbert 2017 Post hoc analysis looking at participants in a reslizumab trial (BREATH) grouped by omalizumab eligibility, which is not a subgroup prespecified in our protocol
Humbert 2019 Data pooled from 2 mepolizumab studies (MENSA, MUSCA), post hoc analysis looking at participants grouped by omalizumab eligibility, which is not a subgroup prespecified in our protocol
Iino 2019 Study in eosinophilic otitis media not asthma
Jackson 2019 Pooled data only from trials that are already included (Bleecker 2016; FitzGerald 2016)
Jacobs 2018 Pooled data only from trials that are already included (Castro 2015a; Castro 2015b)
Jacquemin 1995 Intervention used in study (immunotherapy) is not anti‐IL‐5 therapy
Jimenez 2019 Aggregation of 5 studies
Jutel 2005 Intervention used in study (immunotherapy) is not anti‐IL‐5 therapy
Kang 1988 Intervention used in study (immunotherapy) is not anti‐IL‐5 therapy
Katial 2019 Subgroup analysis by subgroups not relevant to our protocol
Katial 2020 Post hoc analysis of benralizumab study looking at patients grouped by high or low FeNO, which is not a subgroup prespecified in our protocol
Kim 2020 Pooled data only: mepolizumab IV (Pavord 2012a), and mepolizumab SC (Ortega 2014)
Kips 2003 Treatment < 16 weeks
Kon 2001 Intervention used in study (anti‐cd4) is not anti‐IL‐5 therapy
Kopp 2009 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Kopp 2013 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Korenblat 2018 Only pooled data (from > 1 RCT) presented
Kreindler 2019 Pooled data only from trials that are already included (Bleecker 2016; FitzGerald 2016)
Kuang 2018 Not asthma (hypereosinophilic syndrome)
Kuang 2019 Not asthma (hypereosinophilic syndrome)
Kulus 2010 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Lam 2018 Not a RCT (cost‐effectiveness analysis incorporating multiple inputs, including but not only data from 2 RCTs)
Lanier 2003 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Lanier 2009 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Laviolette 2013 Treatment < 16 weeks
Leckie 2000 Treatment < 16 weeks
Leynadier 2004 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Li 2016 Review article, not a RCT
Lizaso 2008 Intervention used in study (immunotherapy) is not anti‐IL‐5 therapy
Lugogo 2016 Not a randomised, placebo‐controlled trial
Lugogo 2020 The intervention includes a reduction in standard asthma management (OCS maintenance), and as per our protocol, we have excluded such studies as the heterogeneity in study design makes them too dissimilar to compare
Manning 2018 Only pooled data (from > 1 RCT) presented
Maselli 2017 Trial involves OCS dose reduction (1 of our exclusion criteria)
Maspero 2016 Combined secondary analysis of 2 trials
Maspero 2018 Pooled data from 2 trials (Bleecker 2016; FitzGerald 2016)
Maspero 2019 Only pooled data (from > 1 RCT) presented
Massanari 2009 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Massanari 2010 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Mathur 2019 Pooled data from 2 trials (Bleecker 2016; FitzGerald 2016)
Mathur 2020 Only pooled data (from > 1 RCT) presented
Maunoury 2018 Not a RCT
Menzies‐Gow 2019a Trial involves OCS dose reduction (one of our exclusion criteria)
Menzies‐Gow 2019b Trial involves OCS dose reduction (one of our exclusion criteria)
Metzger 1998 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Milgrom 1999 Intervention used in study (anti‐IgE) is not anti‐IL‐5 therapy
Milgrom 2001 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Modlin 1977 Participants do not have diagnosis of asthma
Moran 2020 Not an RCT (observational study of patients with asthma and COPD)
Moss 1987 Intervention used in study (immunotherapy) is not anti‐IL‐5 therapy
Murphy 2018 Only pooled data (from > 1 RCT) presented
Nair 2009 Focus of trial is on steroid reduction and therefore does not meet our predefined inclusion criteria
Nair 2016 All participants do not have a diagnosis of asthma
Nair 2017a Trial involves OCS dose reduction (1 of our exclusion criteria)
Nair 2017b Substudy of a trial involving OCS dose reduction (one of our exclusion criteria)
Nair 2017c Trial involves OCS dose reduction (one of our exclusion criteria)
Nair 2020 Only pooled data (from > 1 RCT) presented
NCT00783289 Treatment duration < 16 weeks
NCT00802438 Not RCT
NCT01290887 Study does not include a placebo arm
NCT01366521 Phase 2 study comparing three doses of mepolizumab. This trial does not have a placebo arm.
NCT01471327 Focus of study was on tolerability, pharmacokinetics and pharmacodynamics of single dose SB‐240563 administered IV to Japanese healthy male participants. People with asthma were not included in the study.
NCT01520051 Duration < 16 weeks, additional intervention (experimental rhinovirus infection)
NCT01691859 This study does not include a placebo group. Multi‐centre, open‐label, long‐term safety study with total sample receiving 100 mg mepolizumab administered SC (no control group)
NCT01842607 This study does not include a placebo group. Multi‐centre, open‐label, long‐term safety study with total sample receiving 100 mg mepolizumab administered SC (no control group)
NCT02020889 The study participants did not have asthma
NCT02075255 Focus of trial is on oral steroid reduction
NCT02135692 This study does not include a placebo group. Multi‐centre, open‐label, long‐term study of SC administered mepolizumab 100 mg in addition to standard care, in participants with severe eosinophilic asthma
NCT02258542 Not a RCT (an extension study with no placebo arm)
NCT02293265 Aim of study is to provide a "reliable description of the severe asthma patient landscape with respect to the potential eligibility for treatment with mepolizumab, omalizumab, and reslizumab". No pharmaceutical intervention in study
NCT02377427 Treatment period < 16 weeks
NCT02417961 Not a RCT
NCT02501629 Focus of trial is on oral steroid reduction
NCT02559791 Not placebo‐controlled ‐ single treatment arm only
NCT02594332 Study terminated (recruitment problems)
NCT02654145 Not placebo‐controlled. Single treatment arm only
NCT02808819 Not an RCT
NCT02814643 Treatment duration < 16 weeks
NCT02821416 Duration < 16 weeks, additional intervention (allergen challenge)
NCT02869438 Treatment duration < 16 weeks
NCT02937168 Treatment duration < 16 weeks
NCT02968914 Not a placebo‐controlled trial
NCT03014674 Not a placebo‐controlled trial and treatment duration < 16 weeks
NCT03021304 No placebo arm/single treatment arm, treatment duration < 16 weeks
NCT03476109 No placebo comparator
NCT04617171 Treatment of participants with acute asthma exacerbation, not chronic asthma
NCT04710134 Ineligble study design
Nelsen 2019 Pooled data from 2 trials (Chupp 2017; Ortega 2014), and a 3rd observational study
Newbold 2016 Not an RCT
Newbold 2017 Pooled data from 2 trials (Bleecker 2016; FitzGerald 2016)
Niven 2008 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Noga 2003 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Noga 2008 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Noonan 2013 Intervention used in study (lebrikizumab) is not anti‐IL‐5 therapy
Nowak 2015 Treatment < 16 weeks
O'Quinn 2019 Only pooled data (from > 1 RCT) presented
Oba 2004 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Oh 2013 Intervention used in study (anti‐IL‐9) is not anti‐IL‐5 therapy
Ohashi 1997 Participants do not have a diagnosis of asthma
Ohman 1984 Intervention used in study (immunotherapy) is not anti‐IL‐5 therapy
Ohta 2009 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Ohta 2017 Post hoc analysis of CALIMA (FitzGerald 2016), benralizumab study looking at the subset of patients from Japan, which is not a subgroup prespecified in our protocol
Ong 2005 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Ortega 2018a Only pooled data (from > 1 RCT) presented
Ortega 2018b Only pooled data (from > 1 RCT) presented
Panettieri 2017 Post hoc analysis of reslizumab study looking at participants who had an FEV1 < 50%, which is not a subgroup prespecified in our analysis
Park 1998 Not an RCT
Park 2018 Post hoc analysis of SIROCCO (Bleecker 2016), benralizumab study looking at the subset of patients from Korea, which is not a subgroup prespecified in our protocol
Park 2019 Post hoc analysis of SIROCCO (Bleecker 2016) benralizumab study looking at the subset of patients from Korea, which is not a subgroup prespecified in our protocol
Parker 2010 Intervention used in study (anti‐IL‐9) is not anti‐IL‐5 therapy
Pauli 1984 Intervention used in study (immunotherapy) is not anti‐IL‐5 therapy
Pavord 2012 Posthoc analysis of Pavord 2012a and Ortega 2014 stratified by prior use of anti‐IgE therapy
Pelaia 2016 Study is not an RCT
Pham 2016 An analysis of sera collected from asthma patients enrolled in 2 clinical studies
Piper 2012 Intervention used in study (tralokinumab) is not anti‐IL‐5 therapy
Piper 2013 Intervention used in study (tralokinumab) is not anti‐IL‐5 therapy
Pouliquen 2015 Study has no placebo arm or clinical endpoints
Pouliquen 2016 Aggregation of 2 clinical trials
Prazma 2016 Study is not a randomised, placebo controlled trial
Prieto 2006 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Pui 2010 Intervention used in study (air/diesel exhaust +/‐ antioxidant) is not anti‐IL‐5 therapy
Ranade 2015 Intervention used in study (tralokinumab) is not anti‐IL‐5 therapy
Rose 2009 Intervention used in study (pneumococcal vaccine) is not anti‐IL‐5 therapy
Roskos 2018 Pooled data from 2 trials (Bleecker 2016; FitzGerald 2016)
Roufosse 2020 Not asthma (hypereosinophilic syndrome)
Sakamoto 1984 Not an RCT
Scheerens 2011 Intervention used in study (lebrikizumab) is not anti‐IL‐5 therapy
Scheerens 2012 Intervention used in study (lebrikizumab) is not anti‐IL‐5 therapy
Scheerens 2014 Intervention used in study (lebrikizumab) is not anti‐IL‐5 therapy
Shaw 2019 Trial involves oral corticosteroid dose reduction (one of our exclusion criteria).
Shrimanker 2018 Only pooled data (from > 1 RCT) presented
Shrimanker 2019 Only pooled data (from > 1 RCT) presented
Siergiejko 2011 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Silk 1998 Intervention used in study (pneumococcal vaccine) is not anti‐IL‐5 therapy
Silkoff 2004 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Simoes 2007 Intervention used in study (pavilizumab) is not anti‐IL‐5 therapy
Singh 2010 Intervention used in study (anti‐IL‐13) is not anti‐IL‐5 therapy
Slavin 2009 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Soler 2001 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Sorkness 2013 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Steinfeld 2020 Not asthma (hypereosinophilic syndrome)
Sthoeger 2007 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Sugaya 1994 Intervention used in study (influenza vaccine) is not anti‐IL‐5 therapy
Swanson 2014 Intervention used in study (dupilumab) is not anti‐IL‐5 therapy
Szymaniak 1998 Not an RCT
Tanaka 1993 Intervention used in study (influenza vaccine) is not anti‐IL‐5 therapy
Terr 1969 Study predates monoclonal treatments
Vanlandingham 2019 Only pooled data (from > 1 RCT) presented
Van Rensen 2009 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Vignola 2004 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Virchow 2016 Aggregation of 2 clinical trials
Virchow 2017 Only pooled data (from > 1 RCT) presented
Virchow 2019 Only pooled data (from > 1 RCT) presented
Virchow 2020 Only pooled data (from > 1 RCT) presented
Virchow 2020a Only pooled data (from >1 RCT) presented
Wang 2015 Pharmacometrics assessment of phase IIb data to characterise the exposure‐response relationship with benralizumab in adults with asthma
Wang 2017 Only pooled data (from > 1 RCT) presented
Wark 2003 Intervention used in study (itraconazole) is not anti‐IL‐5 therapy
Wechsler 2017 Pooled data from 2 trials (Castro 2015a; Castro 2015b)
Wechsler 2017a Only pooled data (from > 1 RCT) presented
Wechsler 2019 Only pooled data (from > 1 RCT) presented
Wechsler 2020 Post hoc analysis of reslizumab studies looking at participants who had ≥ 2 or ≥ 3 exacerbations, which is not a subgroup prespecified in our analysis
Weinstein 2016 Combined secondary analysis of 2 trials
Wenzel 2009 Intervention used in study (golimumab) is not anti‐IL‐5 therapy
Wenzel 2013 Interventionused in study (dupilumab) is not anti‐IL‐5 therapy
Wenzel 2013a Intervention used in study (dupilumab) is not anti‐IL‐5 therapy
Wenzel 2014 Intervention used in study (dupilumab) is not anti‐IL‐5 therapy
Xu 2017 Pooled data from 2 trials (Bleecker 2016; FitzGerald 2016)
Xu 2018 Pooled data from 2 trials (Bleecker 2016; FitzGerald 2016)
Yan 2015 Participants do not have a diagnosis of asthma
Yancey 2017 Analysis of subgroup not relevant to our protocol (participants with ≥ 3 exacerbations and eosinophils ≥ 300/μL)
Yancey 2020 Analysis of subgroup not relevant to our protocol
Zangrilli 2019 Pooled data from 2 trials (Bleecker 2016; FitzGerald 2016)
Zetterstrom 1972 Participants do not all have diagnosis of asthma
Zhu 2013 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy
Zielen 2013 Intervention used in study (omalizumab) is not anti‐IL‐5 therapy

COPD: chronic obstructive pulmonary disease; FeNO: exhaled fraction of nitric oxide; IV: intravenous; OCS: oral corticosteroid; RCT: randomised controlled trial; SC: subcutaneous