Gap finder

Search review questions

Each row is one question a systematic review asked: who, what, compared with what, and which outcome, with the effect it found and how certain that is. Words match anywhere in the field.

Limit to evidence status or GRADE (optional)

2,280 questions in 114 reviews · Cystic Fibrosis and Genetic Disorders

current versions
No studies 856 · 37.5%Ungraded 58 · 2.5%Very low 550 · 24.1%Low 502 · 22%Moderate 271 · 11.9%High 43 · 1.9%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

QuestionEffectEvidenceStatus / GRADE
Summary of findings table ‐ Emicizumab 1.5 mg/kg once weekly vs emicizumab 3.0 mg/kg every 2 weeks
Annualized joint Bleeding Rate (AjBR) · people without inhibitors
Non‐clotting factor therapies for preventing bleeds in people with congenital hemophilia A or B (2024) · Cochrane
no estimate extracted1 study · 71 participantsModerate
Summary of findings table ‐ Emicizumab 1.5 mg/kg once weekly vs emicizumab 3.0 mg/kg every 2 weeks
Annualized spontaneous Bleeding Rate (AsBR) · people without inhibitors
Non‐clotting factor therapies for preventing bleeds in people with congenital hemophilia A or B (2024) · Cochrane
no estimate extracted1 study · 71 participantsModerate
Summary of findings table ‐ Emicizumab 1.5 mg/kg once weekly vs emicizumab 3.0 mg/kg every 2 weeks
Proportion of participants with zero bleeds · people without inhibitors
Non‐clotting factor therapies for preventing bleeds in people with congenital hemophilia A or B (2024) · Cochrane
RR 1.25 [0.74, 2.1]1 study · 71 participantsModerate
Summary of findings table ‐ Emicizumab prophylaxis vs on‐demand therapy
Proportion with zero bleeds · people with inhibitors
Non‐clotting factor therapies for preventing bleeds in people with congenital hemophilia A or B (2024) · Cochrane
RR 11.31 [1.66, 77.3]1 study · 53 participantsModerate
Summary of findings table ‐ Emicizumab 1.5 mg/kg once weekly vs emicizumab 3.0 mg/kg every 2 weeks
Change in total score, Haem‐A‐QoL Scale from: 0 (better) to 100 · people without inhibitors
Non‐clotting factor therapies for preventing bleeds in people with congenital hemophilia A or B (2024) · Cochrane
no estimate extracted1 study · 63 participantsLow
Summary of findings table ‐ Emicizumab 1.5 mg/kg once weekly vs emicizumab 3.0 mg/kg every 2 weeks
All adverse events · people without inhibitors
Non‐clotting factor therapies for preventing bleeds in people with congenital hemophilia A or B (2024) · Cochrane
RR 1.1 [0.04, 2.97]1 study · 71 participantsModerate
Summary of findings table ‐ Emicizumab 1.5 mg/kg once weekly vs emicizumab 3.0 mg/kg every 2 weeks
Serious adverse events · people without inhibitors
Non‐clotting factor therapies for preventing bleeds in people with congenital hemophilia A or B (2024) · Cochrane
RR 0.32 [0.04, 2.97]1 study · 71 participantsModerate
Summary of findings table ‐ Fitusiran prophylaxis vs on‐demand therapy
Annualized Bleeding Rate (ABR) ‐ All treated bleeds · people without inhibitors
Non‐clotting factor therapies for preventing bleeds in people with congenital hemophilia A or B (2024) · Cochrane
no estimate extracted1 study · 119 participantsModerate
Summary of findings table ‐ Fitusiran prophylaxis vs on‐demand therapy
Annualized joint Bleeding Rate (AjBR) · people without inhibitors
Non‐clotting factor therapies for preventing bleeds in people with congenital hemophilia A or B (2024) · Cochrane
no estimate extracted1 study · 119 participantsModerate
Summary of findings table ‐ Fitusiran prophylaxis vs on‐demand therapy
Annualized spontaneous Bleeding Rate (AsBR) · people without inhibitors
Non‐clotting factor therapies for preventing bleeds in people with congenital hemophilia A or B (2024) · Cochrane
no estimate extracted1 study · 119 participantsModerate
Summary of findings table ‐ Fitusiran prophylaxis vs on‐demand therapy
Proportion with zero bleeds · people without inhibitors
Non‐clotting factor therapies for preventing bleeds in people with congenital hemophilia A or B (2024) · Cochrane
RR 8.1 [2.04, 32.11]1 study · 119 participantsModerate
Summary of findings table ‐ Fitusiran prophylaxis vs on‐demand therapy
Change in total scores, Haem‐A‐QoL Scale from: 0 (better) to 100 · people without inhibitors
Non‐clotting factor therapies for preventing bleeds in people with congenital hemophilia A or B (2024) · Cochrane
no estimate extracted1 study · 103 participantsLow
Summary of findings table ‐ Fitusiran prophylaxis vs on‐demand therapy
All adverse events · people without inhibitors
Non‐clotting factor therapies for preventing bleeds in people with congenital hemophilia A or B (2024) · Cochrane
RR 1.74 [1.21, 2.5]1 study · 119 participantsModerate
Summary of findings table ‐ Fitusiran prophylaxis vs on‐demand therapy
Adverse events ‐ Serious adverse events · people without inhibitors
Non‐clotting factor therapies for preventing bleeds in people with congenital hemophilia A or B (2024) · Cochrane
RR 0.5 [0.15, 1.63]1 study · 120 participantsModerate
Summary of findings table ‐ Emicizumab prophylaxis vs on‐demand therapy
Change from baseline in total score ‐ Haem‐A‐QoL Scale from: 0 (better) to 100 · people with inhibitors
Non‐clotting factor therapies for preventing bleeds in people with congenital hemophilia A or B (2024) · Cochrane
no estimate extracted1 study · 40 participantsLow
Summary of findings table ‐ Emicizumab prophylaxis vs on‐demand therapy
All adverse events · people with inhibitors
Non‐clotting factor therapies for preventing bleeds in people with congenital hemophilia A or B (2024) · Cochrane
RR 1.97 [1.26, 3.1]1 study · 52 participantsModerate
Summary of findings table ‐ Emicizumab prophylaxis vs on‐demand therapy
Serious adverse events · people with inhibitors
Non‐clotting factor therapies for preventing bleeds in people with congenital hemophilia A or B (2024) · Cochrane
RR 1.32 [0.48, 3.63]1 study · 52 participantsModerate
Summary of findings table ‐ Fitusiran prophylaxis vs on‐demand therapy
Annualized Bleeding Rate (ABR) ‐ All treated bleeds · people with inhibitors
Non‐clotting factor therapies for preventing bleeds in people with congenital hemophilia A or B (2024) · Cochrane
no estimate extracted1 study · 57 participantsModerate
Summary of findings table ‐ Fitusiran prophylaxis vs on‐demand therapy
Annualized spontaneous Bleeding Rate (AsBR) · people with inhibitors
Non‐clotting factor therapies for preventing bleeds in people with congenital hemophilia A or B (2024) · Cochrane
no estimate extracted1 study · 57 participantsModerate
Summary of findings for airway clearance techniques vs no airway clearance techniques
Lung function: FEV1 % predicted change from baseline · children and adults with cystic fibrosis
Airway clearance techniques compared to no airway clearance techniques for cystic fibrosis (2023) · Cochrane
no estimate extracted1 participantsUngraded
Summary of findings for airway clearance techniques vs no airway clearance techniques
Lung function: LCI · children and adults with cystic fibrosis
Airway clearance techniques compared to no airway clearance techniques for cystic fibrosis (2023) · Cochrane
no estimate extracted2 studies · 58 participantsLow
Summary of findings for airway clearance techniques vs no airway clearance techniques
Exacerbation rate (number of exacerbations/year) · children and adults with cystic fibrosis
Airway clearance techniques compared to no airway clearance techniques for cystic fibrosis (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings for airway clearance techniques vs no airway clearance techniques
Mucus transport rate (radio tracer clearance) · children and adults with cystic fibrosis
Airway clearance techniques compared to no airway clearance techniques for cystic fibrosis (2023) · Cochrane
no estimate extracted6 studies · 55 participantsVery low
Summary of findings for airway clearance techniques vs no airway clearance techniques
Expectorated secretions (sputum wet weight) · children and adults with cystic fibrosis
Airway clearance techniques compared to no airway clearance techniques for cystic fibrosis (2023) · Cochrane
no estimate extracted5 studies · 47 participantsVery low
Summary of findings for airway clearance techniques vs no airway clearance techniques
Exercise tolerance (MSWT) · children and adults with cystic fibrosis
Airway clearance techniques compared to no airway clearance techniques for cystic fibrosis (2023) · Cochrane
no estimate extractedNRNo studies
Summary of findings for airway clearance techniques vs no airway clearance techniques
Well‐being or QoL · children and adults with cystic fibrosis
Airway clearance techniques compared to no airway clearance techniques for cystic fibrosis (2023) · Cochrane
no estimate extractedNRNo studies
Hypertonic saline 3% to 7% vs isotonic saline
FEV1 (% predicted) change from baseline, short‐term · adults and children with cystic fibrosis (stable lung disease)
Nebulised hypertonic saline for cystic fibrosis (2023) · Cochrane
no estimate extracted4 studies · 246 participantsVery low
Hypertonic saline 3% to 7% vs isotonic saline
LCI · adults and children with cystic fibrosis (during acute exacerbations of lung disease)
Nebulised hypertonic saline for cystic fibrosis (2023) · Cochrane
no estimate extractedNRNo studies
Hypertonic saline 3% to 7% vs isotonic saline
Mortality · adults and children with cystic fibrosis (during acute exacerbations of lung disease)
Nebulised hypertonic saline for cystic fibrosis (2023) · Cochrane
no estimate extracted2 studies · 142 participantsLow
Hypertonic saline 3% to 7% vs isotonic saline
Measures of sputum clearance · adults and children with cystic fibrosis (during acute exacerbations of lung disease)
Nebulised hypertonic saline for cystic fibrosis (2023) · Cochrane
no estimate extractedNRNo studies
Hypertonic saline 3% to 7% vs isotonic saline
Pulmonary exacerbations · adults and children with cystic fibrosis (during acute exacerbations of lung disease)
Nebulised hypertonic saline for cystic fibrosis (2023) · Cochrane
HR 0.86 [0.57, 1.3]1 study · 132 participantsLow
Hypertonic saline 3% to 7% vs isotonic saline
Adverse events · adults and children with cystic fibrosis (during acute exacerbations of lung disease)
Nebulised hypertonic saline for cystic fibrosis (2023) · Cochrane
no estimate extracted2 studies · 142 participantsVery low
Hypertonic saline vs rhDNase with
FEV1 (% predicted) change from baseline, short‐term · adults and children with cystic fibrosis
Nebulised hypertonic saline for cystic fibrosis (2023) · Cochrane
no estimate extracted1 study · 14 participantsVery low
Hypertonic saline vs rhDNase with
FEV1 (% predicted) change from baseline, long‐term · adults and children with cystic fibrosis
Nebulised hypertonic saline for cystic fibrosis (2023) · Cochrane
no estimate extracted1 study · 47 participantsVery low
Hypertonic saline vs rhDNase with
LCI · adults and children with cystic fibrosis
Nebulised hypertonic saline for cystic fibrosis (2023) · Cochrane
no estimate extractedNRNo studies
Hypertonic saline vs rhDNase with
Mortality · adults and children with cystic fibrosis
Nebulised hypertonic saline for cystic fibrosis (2023) · Cochrane
no estimate extractedNRNo studies
Hypertonic saline vs rhDNase with
Measures of sputum clearance · adults and children with cystic fibrosis
Nebulised hypertonic saline for cystic fibrosis (2023) · Cochrane
no estimate extractedNRNo studies
Hypertonic saline 3% to 7% vs isotonic saline
FEV1 (% predicted) change from baseline, long‐term · adults and children with cystic fibrosis (stable lung disease)
Nebulised hypertonic saline for cystic fibrosis (2023) · Cochrane
no estimate extracted1 study · 134 participantsLow
Hypertonic saline vs rhDNase with
Pulmonary exacerbations · adults and children with cystic fibrosis
Nebulised hypertonic saline for cystic fibrosis (2023) · Cochrane
no estimate extracted1 study · 47 participantsVery low
Hypertonic saline vs rhDNase with
Adverse events · adults and children with cystic fibrosis
Nebulised hypertonic saline for cystic fibrosis (2023) · Cochrane
no estimate extracted1 study · 47 participantsVery low
Hypertonic saline vs amiloride
FEV1: change from baseline, short‐term · adults and children with cystic fibrosis
Nebulised hypertonic saline for cystic fibrosis (2023) · Cochrane
no estimate extractedNRNo studies
Hypertonic saline vs amiloride
FEV1: change from baseline, long‐term · adults and children with cystic fibrosis
Nebulised hypertonic saline for cystic fibrosis (2023) · Cochrane
no estimate extractedNRNo studies
Hypertonic saline vs amiloride
LCI · adults and children with cystic fibrosis
Nebulised hypertonic saline for cystic fibrosis (2023) · Cochrane
no estimate extractedNRNo studies
Hypertonic saline vs amiloride
Mortality · adults and children with cystic fibrosis
Nebulised hypertonic saline for cystic fibrosis (2023) · Cochrane
no estimate extractedNRNo studies
Hypertonic saline vs amiloride
Measures of sputum clearance · adults and children with cystic fibrosis
Nebulised hypertonic saline for cystic fibrosis (2023) · Cochrane
no estimate extracted1 study · 12 participantsVery low
Hypertonic saline vs amiloride
Pulmonary exacerbations · adults and children with cystic fibrosis
Nebulised hypertonic saline for cystic fibrosis (2023) · Cochrane
no estimate extractedNRNo studies
Hypertonic saline vs amiloride
Adverse events · adults and children with cystic fibrosis
Nebulised hypertonic saline for cystic fibrosis (2023) · Cochrane
no estimate extractedNRNo studies
Hypertonic saline vs sodium‐2‐mercaptoethane sulphonate (Mistabron®)
FEV1: short‐term · adults and children with cystic fibrosis
Nebulised hypertonic saline for cystic fibrosis (2023) · Cochrane
no estimate extractedNRNo studies
Hypertonic saline 3% to 7% vs isotonic saline
LCI · adults and children with cystic fibrosis (stable lung disease)
Nebulised hypertonic saline for cystic fibrosis (2023) · Cochrane
no estimate extracted1 study · 10 participantsVery low
Hypertonic saline vs sodium‐2‐mercaptoethane sulphonate (Mistabron®)
FEV1: long‐term · adults and children with cystic fibrosis
Nebulised hypertonic saline for cystic fibrosis (2023) · Cochrane
no estimate extractedNRNo studies