Findings

What do systematic reviews say?

4,703 questions · 15,007 findings · 1,416 reviews

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No studies found 2,881 · 19.2%GRADE not reported 1,551 · 10.3%Very low 3,111 · 20.7%Low 3,881 · 25.9%Moderate 2,669 · 17.8%High 914 · 6.1%

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Plasma‐derived C1 esterase inhibitor vs placebo or active control

Change in number of HAE attacks (per week) · children or adults with Types I or II HAE

1 finding from 1 review

Interventions for the long‐term prevention of hereditary angioedema attacks 2022 · Cochrane Headline outcomes only
no estimate extracted
1 study · 71 participants
Low

Plasma‐derived C1 esterase inhibitor vs placebo or active control

Mortality (during · children or adults with Types I or II HAE

The review found no eligible studies for this question.

1 finding from 1 review

Interventions for the long‐term prevention of hereditary angioedema attacks 2022 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Plasma‐derived C1 esterase inhibitor vs placebo or active control

Serious adverse events (during · children or adults with Types I or II HAE

It is very uncertain whether plasma‐derived C1 esterase inhibitor changes serious adverse events (during compared with placebo or active control (very low certainty).

1 finding from 1 review

Interventions for the long‐term prevention of hereditary angioedema attacks 2022 · Cochrane Headline outcomes only
RR 0.54 [0.09, 3.1]
1 study · 71 participants
Very low

Plasma‐derived C1 esterase inhibitor vs placebo or active control

Quality of lifeAngioedema Quality of Life scale (lower score is better)(during · children or adults with Types I or II HAE

1 finding from 1 review

Interventions for the long‐term prevention of hereditary angioedema attacks 2022 · Cochrane Headline outcomes only
no estimate extracted
1 study · 31 participants
Low

Plasma‐derived C1 esterase inhibitor vs placebo or active control

Disability (any validated scale) (during · children or adults with Types I or II HAE

The review found no eligible studies for this question.

1 finding from 1 review

Interventions for the long‐term prevention of hereditary angioedema attacks 2022 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Plasma‐derived C1 esterase inhibitor vs placebo or active control

Adverse events(during · children or adults with Types I or II HAE

Plasma‐derived C1 esterase inhibitor showed no clear difference in adverse events(during compared with placebo or active control (low certainty).

1 finding from 1 review

Interventions for the long‐term prevention of hereditary angioedema attacks 2022 · Cochrane Headline outcomes only
RR 1.05 [0.78, 1.42]
1 study · 71 participants
Low

Nanofiltered C1 esterase inhibitor vs placebo or active control

Risk of HAE attacks (during · children or adults with Types I or II HAE

The review found no eligible studies for this question.

1 finding from 1 review

Interventions for the long‐term prevention of hereditary angioedema attacks 2022 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Avoralstat vs placebo

Mortality (during · children or adults with Types I or II HAE

The review found no eligible studies for this question.

1 finding from 1 review

Interventions for the long‐term prevention of hereditary angioedema attacks 2022 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Nanofiltered C1 esterase inhibitor vs placebo or active control

Change in number of HAE attacks (per week) · children or adults with Types I or II HAE

1 finding from 1 review

Interventions for the long‐term prevention of hereditary angioedema attacks 2022 · Cochrane Headline outcomes only
no estimate extracted
1 study · 22 participants
Very low

Nanofiltered C1 esterase inhibitor vs placebo or active control

Mortality (during · children or adults with Types I or II HAE

The review found no eligible studies for this question.

1 finding from 1 review

Interventions for the long‐term prevention of hereditary angioedema attacks 2022 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Nanofiltered C1 esterase inhibitor vs placebo or active control

Serious adverse events (during · children or adults with Types I or II HAE

The review found no eligible studies for this question.

1 finding from 1 review

Interventions for the long‐term prevention of hereditary angioedema attacks 2022 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Nanofiltered C1 esterase inhibitor vs placebo or active control

Improvement in quality of life: the difference in quality of life scores for participants surveyed before and after treatment · children or adults with Types I or II HAE

1 finding from 1 review

Interventions for the long‐term prevention of hereditary angioedema attacks 2022 · Cochrane Headline outcomes only
no estimate extracted
1 study · 16 participants
Very low

Nanofiltered C1 esterase inhibitor vs placebo or active control

Disability standardised mean difference (lower is better) (during · children or adults with Types I or II HAE

1 finding from 1 review

Interventions for the long‐term prevention of hereditary angioedema attacks 2022 · Cochrane Headline outcomes only
no estimate extracted
1 study · 16 participants
Very low

Nanofiltered C1 esterase inhibitor vs placebo or active control

Adverse events (during · children or adults with Types I or II HAE

The review found no eligible studies for this question.

1 finding from 1 review

Interventions for the long‐term prevention of hereditary angioedema attacks 2022 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Recombinant human C1 esterase inhibitor vs placebo or active control

Risk of HAE attacks (during · children or adults with Types I or II HAE

The review found no eligible studies for this question.

1 finding from 1 review

Interventions for the long‐term prevention of hereditary angioedema attacks 2022 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Recombinant human C1 esterase inhibitor vs placebo or active control

Change in number of HAE attacks (per week) · children or adults with Types I or II HAE

1 finding from 1 review

Interventions for the long‐term prevention of hereditary angioedema attacks 2022 · Cochrane Headline outcomes only
no estimate extracted
1 study · 32 participants
Very low

Recombinant human C1 esterase inhibitor vs placebo or active control

Mortality (during · children or adults with Types I or II HAE

The review found no eligible studies for this question.

1 finding from 1 review

Interventions for the long‐term prevention of hereditary angioedema attacks 2022 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Recombinant human C1 esterase inhibitor vs placebo or active control

Serious adverse events (during · children or adults with Types I or II HAE

It is very uncertain whether recombinant human C1 esterase inhibitor changes serious adverse events (during compared with placebo or active control (very low certainty).

1 finding from 1 review

Interventions for the long‐term prevention of hereditary angioedema attacks 2022 · Cochrane Headline outcomes only
RR 1.5 [0.06, 34.66]
1 study · 29 participants
Very low

Avoralstat vs placebo

Serious adverse events (during · children or adults with Types I or II HAE

It is very uncertain whether avoralstat changes serious adverse events (during compared with placebo (very low certainty).

1 finding from 1 review

Interventions for the long‐term prevention of hereditary angioedema attacks 2022 · Cochrane Headline outcomes only
RR 0.33 [0.01, 7.8]
1 study · 24 participants
Very low

Recombinant human C1 esterase inhibitor vs placebo or active control

Differences in quality of life ( · children or adults with Types I or II HAE

The review found no eligible studies for this question.

1 finding from 1 review

Interventions for the long‐term prevention of hereditary angioedema attacks 2022 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found