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Cochrane Database of Systematic Reviews

Dimetilfumarato para la esclerosis múltiple

Información

DOI:
https://doi.org/10.1002/14651858.CD011076.pub2Copiar DOI
Base de datos:
  1. Cochrane Database of Systematic Reviews
Versión publicada:
  1. 22 abril 2015see what's new
Tipo:
  1. Intervention
Etapa:
  1. Review
Grupo Editorial Cochrane:
  1. Grupo Cochrane de Esclerosis múltiple y enfermedades raras del sistema nervioso central

Copyright:
  1. Copyright © 2015 The Cochrane Collaboration. Published by John Wiley & Sons, Ltd.

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Autores

  • Zhu Xu

    Department of Neurology, Affiliated Hospital of Guiyang Medical College, Guiyang, China

  • Feng Zhang

    Department of Neurology, Jinan No. 6 People's Hospital, Jinan, China

  • FangLi Sun

    Department of Medical Imaging, Jinan No. 6 People's Hospital, Jinan, China

  • KeFeng Gu

    Department of Interventional Radiology, Jinan No. 6 People's Hospital, Jinan, China

  • Shuai Dong

    Department of Neurology, Jinan No. 6 People's Hospital, Jinan, China

  • Dian He

    Correspondencia a: Department of Neurology, Affiliated Hospital of Guiyang Medical College, Guiyang, China

    [email protected]

Contributions of authors

All correspondence: Dian He
Drafting of review versions: Zhu Xu and Dian He
Search for trials: Feng Zhang and FangLi Sun
Obtaining copies of trial reports: KeFeng Gu and Shuai Dong
Selection of trials for inclusion/exclusion: Zhu Xu and Dian He
Extraction of data: Zhu Xu and Dian He
Entry of data: Zhu Xu and Dian He
Interpretation of data analyses: Dian He

Sources of support

Internal sources

  • Guiyang Medical College, China.

External sources

  • The Science and Technology Department of Guizhou Province [No. LH(2014)7134], China.

Declarations of interest

HD ‐ none

XZ ‐ none

ZF ‐ none

SFL ‐ none

GKF‐ none

DS ‐ none

Acknowledgements

We thank Andrea Fittipaldo, Trials Search Co‐ordinator, and Liliana Coco, Managing Editor of the Cochrane Multiple Sclerosis and Rare Diseases of the Central Nervous System Group, for their help and support in developing this review. We thank all peer reviewers, and Graziella Filippini, the Co‐ordinating editor of the Cochrane Multiple Sclerosis and Rare Diseases of the Central Nervous System Group, for their constructive comments and suggestions for this review.

Version history

Published

Title

Stage

Authors

Version

2015 Apr 22

Dimethyl fumarate for multiple sclerosis

Review

Zhu Xu, Feng Zhang, FangLi Sun, KeFeng Gu, Shuai Dong, Dian He

https://doi.org/10.1002/14651858.CD011076.pub2

2014 Apr 18

Dimethyl fumarate for multiple sclerosis

Protocol

Zhu Xu, Feng Zhang, FangLi Sun, KeFeng Gu, Shuai Dong, Dian He

https://doi.org/10.1002/14651858.CD011076

Differences between protocol and review

In the current review, we rephrased "disability progression" using "disability worsening". Only the primary benefit outcomes, the proportion of patients who discontinued study drug because of AEs and the proportion of patients with lymphopenia for low‐dose dimethyl fumarate administration were selected to create the 'Summary of findings' table because these outcomes are the most relevant to clinical practice. The restriction of "double‐blind studies" pre‐set in the protocol was removed. This change did not influence the conclusion of the review because all the trials eligible for the revised criteria were double‐blind. In addition, we removed duration of follow‐up and administration frequency as covariates for subgroup analysis in future updates.

Keywords

MeSH

PICO

Population
Intervention
Comparison
Outcome

El uso y la enseñanza del modelo PICO están muy extendidos en el ámbito de la atención sanitaria basada en la evidencia para formular preguntas y estrategias de búsqueda y para caracterizar estudios o metanálisis clínicos. PICO son las siglas en inglés de cuatro posibles componentes de una pregunta de investigación: paciente, población o problema; intervención; comparación; desenlace (outcome).

Para saber más sobre el uso del modelo PICO, puede consultar el Manual Cochrane.

Study flow diagram.
Figuras y tablas -
Figure 1

Study flow diagram.

'Risk of bias' graph: review authors' judgements about each risk of bias item presented as percentages across all included studies.
Figuras y tablas -
Figure 2

'Risk of bias' graph: review authors' judgements about each risk of bias item presented as percentages across all included studies.

'Risk of bias' summary: review authors' judgements about each risk of bias item for each included study.
Figuras y tablas -
Figure 3

'Risk of bias' summary: review authors' judgements about each risk of bias item for each included study.

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 1 The proportion of patients with at least one relapse at two years.
Figuras y tablas -
Analysis 1.1

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 1 The proportion of patients with at least one relapse at two years.

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 2 The proportion of patients with at least one relapse at two years (the likely‐case scenario).
Figuras y tablas -
Analysis 1.2

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 2 The proportion of patients with at least one relapse at two years (the likely‐case scenario).

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 3 The annualised relapse rate at two years.
Figuras y tablas -
Analysis 1.3

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 3 The annualised relapse rate at two years.

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 4 The proportion of patients with disability worsening at two years.
Figuras y tablas -
Analysis 1.4

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 4 The proportion of patients with disability worsening at two years.

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 5 The proportion of patients with disability worsening at two years (the likely‐case scenario).
Figuras y tablas -
Analysis 1.5

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 5 The proportion of patients with disability worsening at two years (the likely‐case scenario).

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 6 The mean change in SF‐36 Physical Component Summary scores from baseline to two years.
Figuras y tablas -
Analysis 1.6

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 6 The mean change in SF‐36 Physical Component Summary scores from baseline to two years.

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 7 The mean change in SF‐36 Mental Component Summary scores from baseline to two years.
Figuras y tablas -
Analysis 1.7

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 7 The mean change in SF‐36 Mental Component Summary scores from baseline to two years.

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 8 The number of patients with adverse events excluding relapses at two years.
Figuras y tablas -
Analysis 1.8

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 8 The number of patients with adverse events excluding relapses at two years.

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 9 The number of patients with serious adverse events excluding relapses at two years.
Figuras y tablas -
Analysis 1.9

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 9 The number of patients with serious adverse events excluding relapses at two years.

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 10 The number of patients who discontinued study drug because of adverse events excluding relapses at two years.
Figuras y tablas -
Analysis 1.10

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 10 The number of patients who discontinued study drug because of adverse events excluding relapses at two years.

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 11 The number of patients with flushing at two years.
Figuras y tablas -
Analysis 1.11

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 11 The number of patients with flushing at two years.

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 12 The number of patients with upper abdominal pain at two years.
Figuras y tablas -
Analysis 1.12

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 12 The number of patients with upper abdominal pain at two years.

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 13 The number of patients with nausea at two years.
Figuras y tablas -
Analysis 1.13

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 13 The number of patients with nausea at two years.

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 14 The number of patients with diarrhoea at two years.
Figuras y tablas -
Analysis 1.14

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 14 The number of patients with diarrhoea at two years.

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 15 The number of patients with proteinuria at two years.
Figuras y tablas -
Analysis 1.15

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 15 The number of patients with proteinuria at two years.

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 16 The number of patients with a decreased lymphocyte count of less than 0.5×109 per litre at two years.
Figuras y tablas -
Analysis 1.16

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 16 The number of patients with a decreased lymphocyte count of less than 0.5×109 per litre at two years.

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 17 The number of patients with a decreased white‐cell count of less than 3.0×109 per litre at two years.
Figuras y tablas -
Analysis 1.17

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 17 The number of patients with a decreased white‐cell count of less than 3.0×109 per litre at two years.

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 18 The number of patients with an increased alanine aminotransferase level at least three times the upper limit of the normal range at two years.
Figuras y tablas -
Analysis 1.18

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 18 The number of patients with an increased alanine aminotransferase level at least three times the upper limit of the normal range at two years.

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 19 The number of patients with gastrointestinal events at two years.
Figuras y tablas -
Analysis 1.19

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 19 The number of patients with gastrointestinal events at two years.

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 20 The number of patients with infections at two years.
Figuras y tablas -
Analysis 1.20

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 20 The number of patients with infections at two years.

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 21 The number of patients with serious infections at two years.
Figuras y tablas -
Analysis 1.21

Comparison 1 High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo, Outcome 21 The number of patients with serious infections at two years.

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 1 The proportion of patients with at least one relapse at two years.
Figuras y tablas -
Analysis 2.1

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 1 The proportion of patients with at least one relapse at two years.

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 2 The proportion of patients with at least one relapse at two years (the likely‐case scenario).
Figuras y tablas -
Analysis 2.2

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 2 The proportion of patients with at least one relapse at two years (the likely‐case scenario).

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 3 The annualised relapse rate at two years.
Figuras y tablas -
Analysis 2.3

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 3 The annualised relapse rate at two years.

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 4 The proportion of patients with disability worsening at two years.
Figuras y tablas -
Analysis 2.4

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 4 The proportion of patients with disability worsening at two years.

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 5 The proportion of patients with disability worsening at two years (the likely‐case scenario).
Figuras y tablas -
Analysis 2.5

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 5 The proportion of patients with disability worsening at two years (the likely‐case scenario).

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 6 The mean change in SF‐36 Physical Component Summary scores from baseline to two years.
Figuras y tablas -
Analysis 2.6

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 6 The mean change in SF‐36 Physical Component Summary scores from baseline to two years.

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 7 The mean change in SF‐36 Mental Component Summary scores from baseline to two years.
Figuras y tablas -
Analysis 2.7

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 7 The mean change in SF‐36 Mental Component Summary scores from baseline to two years.

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 8 The number of patients with adverse events excluding relapses at two years.
Figuras y tablas -
Analysis 2.8

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 8 The number of patients with adverse events excluding relapses at two years.

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 9 The number of patients with serious adverse events excluding relapses at two years.
Figuras y tablas -
Analysis 2.9

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 9 The number of patients with serious adverse events excluding relapses at two years.

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 10 The number of patients who discontinued study drug because of adverse events excluding relapses at two years.
Figuras y tablas -
Analysis 2.10

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 10 The number of patients who discontinued study drug because of adverse events excluding relapses at two years.

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 11 The number of patients with flushing at two years.
Figuras y tablas -
Analysis 2.11

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 11 The number of patients with flushing at two years.

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 12 The number of patients with upper abdominal pain at two years.
Figuras y tablas -
Analysis 2.12

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 12 The number of patients with upper abdominal pain at two years.

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 13 The number of patients with nausea at two years.
Figuras y tablas -
Analysis 2.13

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 13 The number of patients with nausea at two years.

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 14 The number of patients with diarrhoea at two years.
Figuras y tablas -
Analysis 2.14

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 14 The number of patients with diarrhoea at two years.

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 15 The number of patients with proteinuria at two years.
Figuras y tablas -
Analysis 2.15

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 15 The number of patients with proteinuria at two years.

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 16 The number of patients with a decreased lymphocyte count of less than 0.5×109 per litre at two years.
Figuras y tablas -
Analysis 2.16

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 16 The number of patients with a decreased lymphocyte count of less than 0.5×109 per litre at two years.

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 17 The number of patients with a decreased white‐cell count of less than 3.0×109 per litre at two years.
Figuras y tablas -
Analysis 2.17

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 17 The number of patients with a decreased white‐cell count of less than 3.0×109 per litre at two years.

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 18 The number of patients with an increased alanine aminotransferase level at least three times the upper limit of the normal range at two years.
Figuras y tablas -
Analysis 2.18

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 18 The number of patients with an increased alanine aminotransferase level at least three times the upper limit of the normal range at two years.

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 19 The number of patients with gastrointestinal events at two years.
Figuras y tablas -
Analysis 2.19

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 19 The number of patients with gastrointestinal events at two years.

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 20 The number of patients with infections at two years.
Figuras y tablas -
Analysis 2.20

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 20 The number of patients with infections at two years.

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 21 The number of patients with serious infections at two years.
Figuras y tablas -
Analysis 2.21

Comparison 2 Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo, Outcome 21 The number of patients with serious infections at two years.

Summary of findings for the main comparison. Dimethyl fumarate for multiple sclerosis

Dimethyl fumarate for multiple sclerosis

Patient or population: Patients with relapsing‐remitting multiple sclerosis
Settings: United States, Germany, Poland, India, Canada, France, etc
Intervention: Dimethyl fumarate at a dose of 240 mg orally twice daily

Outcomes

Illustrative comparative risks* (95% CI)

Relative effect
(95% CI)

No of Participants
(studies)

Quality of the evidence
(GRADE)

Comments

Assumed risk

Corresponding risk

Placebo

Dimethyl fumarate

The proportion of patients with at least one relapse at two years
Follow‐up: 2 years

Study population

RR 0.64
(0.54 to 0.77)

1540
(2 studies)

⊕⊕⊕⊝
moderate1

437 per 1000

280 per 1000
(236 to 337)

The proportion of patients with disability worsening at two years
Follow‐up: 2 years

Study population

RR 0.65
(0.53 to 0.81)

1539
(2 studies)

⊕⊕⊝⊝
low1,2

223 per 1000

145 per 1000
(118 to 181)

The proportion of patients who discontinued study drug because of adverse events excluding relapses at two years
Follow‐up: 2 years

Study population

RR 2.18
(1.56 to 3.06)

1540
(2 studies)

⊕⊕⊕⊝
moderate1

58 per 1000

127 per 1000
(91 to 179)

The proportion of patients with lymphopenia at two years

Follow‐up: 2 years

Study population

RR 5.69
(2.40 to 13.46)

1540
(2 studies)

⊕⊕⊕⊝
moderate1

8 per 1000

44 per 1000
(19 to 105)

*The basis for the assumed risk (e.g. the median placebo group risk across studies) is provided in footnotes. The corresponding risk (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).
CI: Confidence interval; RR: Risk ratio.

GRADE Working Group grades of evidence
High quality: Further research is very unlikely to change our confidence in the estimate of effect.
Moderate quality: Further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate.
Low quality: Further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate.
Very low quality: We are very uncertain about the estimate.

1 A high rate of dropouts existed and reasons of dropouts were unbalanced between arms
2 Disability worsening was confirmed at 3 months of follow‐up

Figuras y tablas -
Summary of findings for the main comparison. Dimethyl fumarate for multiple sclerosis
Comparison 1. High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 The proportion of patients with at least one relapse at two years Show forest plot

2

1532

Risk Ratio (M‐H, Fixed, 95% CI)

0.57 [0.50, 0.66]

2 The proportion of patients with at least one relapse at two years (the likely‐case scenario) Show forest plot

2

1534

Risk Ratio (M‐H, Fixed, 95% CI)

0.75 [0.68, 0.83]

3 The annualised relapse rate at two years Show forest plot

2

1532

Rate Ratio (Fixed, 95% CI)

0.51 [0.45, 0.59]

4 The proportion of patients with disability worsening at two years Show forest plot

2

1532

Risk Ratio (M‐H, Fixed, 95% CI)

0.70 [0.57, 0.87]

5 The proportion of patients with disability worsening at two years (the likely‐case scenario) Show forest plot

2

1534

Risk Ratio (M‐H, Fixed, 95% CI)

0.85 [0.75, 0.97]

6 The mean change in SF‐36 Physical Component Summary scores from baseline to two years Show forest plot

2

1461

Mean Difference (IV, Fixed, 95% CI)

1.51 [0.76, 2.26]

7 The mean change in SF‐36 Mental Component Summary scores from baseline to two years Show forest plot

2

1461

Mean Difference (IV, Random, 95% CI)

1.19 [‐0.70, 3.08]

8 The number of patients with adverse events excluding relapses at two years Show forest plot

2

1531

Risk Ratio (M‐H, Fixed, 95% CI)

1.38 [1.27, 1.51]

9 The number of patients with serious adverse events excluding relapses at two years Show forest plot

2

1531

Risk Ratio (M‐H, Fixed, 95% CI)

1.07 [0.75, 1.53]

10 The number of patients who discontinued study drug because of adverse events excluding relapses at two years Show forest plot

2

1531

Risk Ratio (M‐H, Fixed, 95% CI)

2.16 [1.54, 3.03]

11 The number of patients with flushing at two years Show forest plot

2

1531

Risk Ratio (M‐H, Fixed, 95% CI)

6.57 [4.62, 9.35]

12 The number of patients with upper abdominal pain at two years Show forest plot

2

1531

Risk Ratio (M‐H, Fixed, 95% CI)

1.91 [1.35, 2.69]

13 The number of patients with nausea at two years Show forest plot

2

1531

Risk Ratio (M‐H, Fixed, 95% CI)

1.59 [1.19, 2.12]

14 The number of patients with diarrhoea at two years Show forest plot

2

1531

Risk Ratio (M‐H, Fixed, 95% CI)

1.55 [1.20, 2.01]

15 The number of patients with proteinuria at two years Show forest plot

2

1531

Risk Ratio (M‐H, Fixed, 95% CI)

1.46 [1.06, 2.00]

16 The number of patients with a decreased lymphocyte count of less than 0.5×109 per litre at two years Show forest plot

2

1531

Risk Ratio (M‐H, Fixed, 95% CI)

5.25 [2.20, 12.51]

17 The number of patients with a decreased white‐cell count of less than 3.0×109 per litre at two years Show forest plot

2

1531

Risk Ratio (M‐H, Fixed, 95% CI)

5.23 [2.47, 11.07]

18 The number of patients with an increased alanine aminotransferase level at least three times the upper limit of the normal range at two years Show forest plot

2

1531

Risk Ratio (M‐H, Random, 95% CI)

1.34 [0.61, 2.94]

19 The number of patients with gastrointestinal events at two years Show forest plot

2

1531

Risk Ratio (M‐H, Random, 95% CI)

1.67 [1.31, 2.12]

20 The number of patients with infections at two years Show forest plot

2

1531

Risk Ratio (M‐H, Fixed, 95% CI)

1.08 [0.99, 1.17]

21 The number of patients with serious infections at two years Show forest plot

2

1531

Risk Ratio (M‐H, Fixed, 95% CI)

1.38 [0.64, 2.98]

Figuras y tablas -
Comparison 1. High‐dose (240 mg orally three times daily) dimethyl fumarate versus placebo
Comparison 2. Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 The proportion of patients with at least one relapse at two years Show forest plot

2

1540

Risk Ratio (M‐H, Random, 95% CI)

0.64 [0.54, 0.77]

2 The proportion of patients with at least one relapse at two years (the likely‐case scenario) Show forest plot

2

1546

Risk Ratio (M‐H, Fixed, 95% CI)

0.81 [0.74, 0.89]

3 The annualised relapse rate at two years Show forest plot

2

1540

Rate Ratio (Fixed, 95% CI)

0.51 [0.44, 0.59]

4 The proportion of patients with disability worsening at two years Show forest plot

2

1539

Risk Ratio (M‐H, Fixed, 95% CI)

0.65 [0.53, 0.81]

5 The proportion of patients with disability worsening at two years (the likely‐case scenario) Show forest plot

2

1546

Risk Ratio (M‐H, Fixed, 95% CI)

0.83 [0.73, 0.94]

6 The mean change in SF‐36 Physical Component Summary scores from baseline to two years Show forest plot

2

1474

Mean Difference (IV, Fixed, 95% CI)

1.54 [0.79, 2.30]

7 The mean change in SF‐36 Mental Component Summary scores from baseline to two years Show forest plot

2

1474

Mean Difference (IV, Fixed, 95% CI)

0.93 [‐0.06, 1.93]

8 The number of patients with adverse events excluding relapses at two years Show forest plot

2

1540

Risk Ratio (M‐H, Fixed, 95% CI)

1.37 [1.25, 1.49]

9 The number of patients with serious adverse events excluding relapses at two years Show forest plot

2

1540

Risk Ratio (M‐H, Random, 95% CI)

1.05 [0.63, 1.74]

10 The number of patients who discontinued study drug because of adverse events excluding relapses at two years Show forest plot

2

1540

Risk Ratio (M‐H, Fixed, 95% CI)

2.18 [1.56, 3.06]

11 The number of patients with flushing at two years Show forest plot

2

1540

Risk Ratio (M‐H, Fixed, 95% CI)

8.01 [5.66, 11.34]

12 The number of patients with upper abdominal pain at two years Show forest plot

2

1540

Risk Ratio (M‐H, Fixed, 95% CI)

1.69 [1.19, 2.41]

13 The number of patients with nausea at two years Show forest plot

2

1540

Risk Ratio (M‐H, Fixed, 95% CI)

1.39 [1.03, 1.87]

14 The number of patients with diarrhoea at two years Show forest plot

2

1540

Risk Ratio (M‐H, Random, 95% CI)

1.31 [0.91, 1.87]

15 The number of patients with proteinuria at two years Show forest plot

2

1540

Risk Ratio (M‐H, Fixed, 95% CI)

1.14 [0.81, 1.59]

16 The number of patients with a decreased lymphocyte count of less than 0.5×109 per litre at two years Show forest plot

2

1540

Risk Ratio (M‐H, Fixed, 95% CI)

5.69 [2.40, 13.46]

17 The number of patients with a decreased white‐cell count of less than 3.0×109 per litre at two years Show forest plot

2

1540

Risk Ratio (M‐H, Fixed, 95% CI)

6.53 [3.13, 13.64]

18 The number of patients with an increased alanine aminotransferase level at least three times the upper limit of the normal range at two years Show forest plot

2

1540

Risk Ratio (M‐H, Random, 95% CI)

1.33 [0.57, 3.07]

19 The number of patients with gastrointestinal events at two years Show forest plot

2

1540

Risk Ratio (M‐H, Random, 95% CI)

1.43 [1.11, 1.85]

20 The number of patients with infections at two years Show forest plot

2

1540

Risk Ratio (M‐H, Random, 95% CI)

1.04 [0.92, 1.18]

21 The number of patients with serious infections at two years Show forest plot

2

1540

Risk Ratio (M‐H, Fixed, 95% CI)

1.55 [0.73, 3.28]

Figuras y tablas -
Comparison 2. Low‐dose (240 mg orally twice daily) dimethyl fumarate versus placebo