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Cochrane Database of Systematic Reviews

Losigamone add‐on therapy for partial epilepsy

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Información

DOI:
https://doi.org/10.1002/14651858.CD009324.pub3Copiar DOI
Base de datos:
  1. Cochrane Database of Systematic Reviews
Versión publicada:
  1. 10 diciembre 2015see what's new
Tipo:
  1. Intervention
Etapa:
  1. Review
Grupo Editorial Cochrane:
  1. Grupo Cochrane de Epilepsia

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

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Contraer

Autores

  • Yousheng Xiao

    Department of Neurology, The First Affiliated Hospital, Guangxi Medical University, Nanning, China

  • Man Luo

    Department of Neurology, The First Affiliated Hospital, Guangxi Medical University, Nanning, China

  • Jin Wang

    Correspondencia a: Department of Neurology, The First Affiliated Hospital, Guangxi Medical University, Nanning, China

    [email protected]

  • Hongye Luo

    Department of Epidemiology & Statistics, Guangxi Medical University, Nanning, China

Contributions of authors

Yousheng Xiao, Man Luo, Hongye Luo, Jin Wang drafted the protocol.
Trials search co‐ordinator developed the search strategy.
Yousheng Xiao, Man Luo selected relevant articles for inclusion.
Yousheng Xiao, Man Luo extracted the data from included studies.
Yousheng Xiao, Man Luo assessed the risk of bias in included studies.
Yousheng Xiao, Man Luo entered data to RevMan.
Yousheng Xiao, Man Luo, Hongye Luo, Jin Wang carried out the analysis.
Yousheng Xiao, Jin Wang interpreted the results.
Yousheng Xiao, Man Luo, Hongye Luo, Jin Wang drafted the final review.
Jin Wang updated the review.

Sources of support

Internal sources

  • No sources of support supplied

External sources

  • National Institute for Health Research, NIHR, UK.

    This review was supported by the National Institute for Health Research, via Cochrane Infrastructure funding to the Epilepsy Group. The views and opinions expressed therein are those of the authors and do not necessarily reflect those of the Systematic Reviews Programme, NIHR, NHS or the Department of Health.

Declarations of interest

None known.

Acknowledgements

We would like to thank Professor Anthony Marson for his constructive suggestions and comments. We would like to thank Ann Johnston, Andrew McKay and Keven Hearn for their suggestions and comments. We would also like to thank Rachael Kelly from the Cochrane Epilepsy Review Group for her help in developing this review.

Version history

Published

Title

Stage

Authors

Version

2019 Dec 11

Losigamone add‐on therapy for focal epilepsy

Review

Hongchang Chen, Honghu He, Yousheng Xiao, Man Luo, Hongye Luo, Jin Wang

https://doi.org/10.1002/14651858.CD009324.pub5

2018 Jan 22

Losigamone add‐on therapy for focal epilepsy

Review

Yousheng Xiao, Man Luo, Jin Wang, Hongye Luo

https://doi.org/10.1002/14651858.CD009324.pub4

2015 Dec 10

Losigamone add‐on therapy for partial epilepsy

Review

Yousheng Xiao, Man Luo, Jin Wang, Hongye Luo

https://doi.org/10.1002/14651858.CD009324.pub3

2012 Jun 13

Losigamone add‐on therapy for partial epilepsy

Review

Yousheng Xiao, Man Luo, Jin Wang, Hongye Luo

https://doi.org/10.1002/14651858.CD009324.pub2

2011 Sep 07

Losigamone add‐on therapy for partial epilepsy

Protocol

Yousheng Xiao, Man Luo, Jin Wang, Hongye Luo

https://doi.org/10.1002/14651858.CD009324

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' judgments about each risk of bias item presented as percentages across all included studies.
Figuras y tablas -
Figure 2

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

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

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

Comparison 1 Losigamone versus placebo: 50% or greater reduction in seizure frequency, Outcome 1 All doses.
Figuras y tablas -
Analysis 1.1

Comparison 1 Losigamone versus placebo: 50% or greater reduction in seizure frequency, Outcome 1 All doses.

Comparison 1 Losigamone versus placebo: 50% or greater reduction in seizure frequency, Outcome 2 1500 mg/day.
Figuras y tablas -
Analysis 1.2

Comparison 1 Losigamone versus placebo: 50% or greater reduction in seizure frequency, Outcome 2 1500 mg/day.

Comparison 1 Losigamone versus placebo: 50% or greater reduction in seizure frequency, Outcome 3 1200 mg/day.
Figuras y tablas -
Analysis 1.3

Comparison 1 Losigamone versus placebo: 50% or greater reduction in seizure frequency, Outcome 3 1200 mg/day.

Comparison 2 Losigamone versus placebo: treatment withdrawal, Outcome 1 All doses.
Figuras y tablas -
Analysis 2.1

Comparison 2 Losigamone versus placebo: treatment withdrawal, Outcome 1 All doses.

Comparison 2 Losigamone versus placebo: treatment withdrawal, Outcome 2 1500 mg/day.
Figuras y tablas -
Analysis 2.2

Comparison 2 Losigamone versus placebo: treatment withdrawal, Outcome 2 1500 mg/day.

Comparison 2 Losigamone versus placebo: treatment withdrawal, Outcome 3 1200 mg/day.
Figuras y tablas -
Analysis 2.3

Comparison 2 Losigamone versus placebo: treatment withdrawal, Outcome 3 1200 mg/day.

Comparison 3 Losigamone versus placebo: adverse events, Outcome 1 The proportion of participants experiencing any adverse events (random model).
Figuras y tablas -
Analysis 3.1

Comparison 3 Losigamone versus placebo: adverse events, Outcome 1 The proportion of participants experiencing any adverse events (random model).

Comparison 3 Losigamone versus placebo: adverse events, Outcome 2 The proportion of participants experiencing any adverse events (fixed model).
Figuras y tablas -
Analysis 3.2

Comparison 3 Losigamone versus placebo: adverse events, Outcome 2 The proportion of participants experiencing any adverse events (fixed model).

Comparison 3 Losigamone versus placebo: adverse events, Outcome 3 Dizziness.
Figuras y tablas -
Analysis 3.3

Comparison 3 Losigamone versus placebo: adverse events, Outcome 3 Dizziness.

Comparison 3 Losigamone versus placebo: adverse events, Outcome 4 Headache.
Figuras y tablas -
Analysis 3.4

Comparison 3 Losigamone versus placebo: adverse events, Outcome 4 Headache.

Comparison 3 Losigamone versus placebo: adverse events, Outcome 5 Somnolence.
Figuras y tablas -
Analysis 3.5

Comparison 3 Losigamone versus placebo: adverse events, Outcome 5 Somnolence.

Comparison 3 Losigamone versus placebo: adverse events, Outcome 6 Fatigue.
Figuras y tablas -
Analysis 3.6

Comparison 3 Losigamone versus placebo: adverse events, Outcome 6 Fatigue.

Comparison 3 Losigamone versus placebo: adverse events, Outcome 7 Ataxia.
Figuras y tablas -
Analysis 3.7

Comparison 3 Losigamone versus placebo: adverse events, Outcome 7 Ataxia.

Comparison 3 Losigamone versus placebo: adverse events, Outcome 8 Nausea.
Figuras y tablas -
Analysis 3.8

Comparison 3 Losigamone versus placebo: adverse events, Outcome 8 Nausea.

Comparison 3 Losigamone versus placebo: adverse events, Outcome 9 Diplopia.
Figuras y tablas -
Analysis 3.9

Comparison 3 Losigamone versus placebo: adverse events, Outcome 9 Diplopia.

Comparison 3 Losigamone versus placebo: adverse events, Outcome 10 Abnormal vision.
Figuras y tablas -
Analysis 3.10

Comparison 3 Losigamone versus placebo: adverse events, Outcome 10 Abnormal vision.

Comparison 3 Losigamone versus placebo: adverse events, Outcome 11 Vertigo.
Figuras y tablas -
Analysis 3.11

Comparison 3 Losigamone versus placebo: adverse events, Outcome 11 Vertigo.

Comparison 3 Losigamone versus placebo: adverse events, Outcome 12 Depression.
Figuras y tablas -
Analysis 3.12

Comparison 3 Losigamone versus placebo: adverse events, Outcome 12 Depression.

Summary of findings for the main comparison. Losigamone compared to placebo for partial epilepsy

Losigamone compared to placebo for partial epilepsy

Patient or population: partial epilepsy
Settings: multicenter
Intervention: losigamone
Comparison: placebo

Outcomes

Illustrative comparative risks* (95% CI)

Relative effect
(95% CI)

No of Participants
(studies)

Quality of the evidence
(GRADE)

Assumed risk

Corresponding risk

Placebo

Losigamone

50% or greater reduction in seizure frequency
Follow‐up: mean 8 to 12 weeks

Study population

RR 1.76
(1.14 to 2.72)

467
(2 studies)

⊕⊕⊕⊝
moderate1

132 per 1000

233 per 1000
(151 to 360)

Moderate

131 per 1000

231 per 1000
(149 to 356)

Treatment withdrawal
Follow‐up: mean 8 to 12 weeks

Study population

RR 2.16
(1.28 to 3.67)

467
(2 studies)

⊕⊕⊕⊝
moderate1

90 per 1000

194 per 1000
(115 to 330)

Moderate

88 per 1000

190 per 1000
(113 to 323)

The proportion of participants experiencing any adverse events
Follow‐up: mean 8 to 12 weeks

Study population

RR 1.34
(1.00 to 1.80)

467
(2 studies)

⊕⊕⊕⊝
moderate1

471 per 1000

631 per 1000
(471 to 848)

Moderate

482 per 1000

646 per 1000
(482 to 868)

Adverse event (dizziness)
Follow‐up: mean 8 to 12 weeks

Study population

RR 3.82
(1.69 to 8.64)

467
(2 studies)

⊕⊕⊕⊝
moderate1

63 per 1000

243 per 1000
(107 to 549)

Moderate

60 per 1000

229 per 1000
(101 to 518)

*The basis for the assumed risk (e.g. the median control 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 One of the two included trials did not describe the method used to generate the random list and did not mention allocation concealment

Figuras y tablas -
Summary of findings for the main comparison. Losigamone compared to placebo for partial epilepsy
Table 1. Outcome reporting matrix

Study ID
(author, date of publication)

Review's primary outcomes

Review's secondary outcomes

Other study outcomes

50% or greater reduction in seizure frequency

Seizure freedom

Treatment withdrawal

Adverse events

Change in seizure frequency

The percentage reduction in seizure frequency

Bauer 2001

×

×

Baulac 2003

×

×

√Full reporting of outcomes for treatment comparison

× No reporting of outcomes for treatment comparison

Figuras y tablas -
Table 1. Outcome reporting matrix
Comparison 1. Losigamone versus placebo: 50% or greater reduction in seizure frequency

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 All doses Show forest plot

2

467

Risk Ratio (M‐H, Fixed, 95% CI)

1.76 [1.14, 2.72]

2 1500 mg/day Show forest plot

2

380

Risk Ratio (M‐H, Fixed, 95% CI)

1.94 [1.25, 3.01]

3 1200 mg/day Show forest plot

1

172

Risk Ratio (M‐H, Fixed, 95% CI)

1.47 [0.70, 3.08]

Figuras y tablas -
Comparison 1. Losigamone versus placebo: 50% or greater reduction in seizure frequency
Comparison 2. Losigamone versus placebo: treatment withdrawal

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 All doses Show forest plot

2

467

Risk Ratio (M‐H, Fixed, 95% CI)

2.16 [1.28, 3.67]

2 1500 mg/day Show forest plot

2

380

Risk Ratio (M‐H, Fixed, 95% CI)

2.34 [1.38, 3.99]

3 1200 mg/day Show forest plot

1

172

Risk Ratio (M‐H, Fixed, 95% CI)

1.79 [0.69, 4.63]

Figuras y tablas -
Comparison 2. Losigamone versus placebo: treatment withdrawal
Comparison 3. Losigamone versus placebo: adverse events

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 The proportion of participants experiencing any adverse events (random model) Show forest plot

2

Risk Ratio (M‐H, Random, 95% CI)

Subtotals only

1.1 All doses

2

467

Risk Ratio (M‐H, Random, 95% CI)

1.34 [1.00, 1.80]

1.2 1200 mg/day

1

172

Risk Ratio (M‐H, Random, 95% CI)

1.06 [0.83, 1.34]

1.3 1500 mg/day

2

380

Risk Ratio (M‐H, Random, 95% CI)

1.40 [1.14, 1.71]

2 The proportion of participants experiencing any adverse events (fixed model) Show forest plot

2

Risk Ratio (M‐H, Fixed, 95% CI)

Subtotals only

2.1 All doses

2

467

Risk Ratio (M‐H, Fixed, 95% CI)

1.33 [1.12, 1.57]

3 Dizziness Show forest plot

2

Risk Ratio (M‐H, Fixed, 99% CI)

Subtotals only

3.1 All doses

2

467

Risk Ratio (M‐H, Fixed, 99% CI)

3.82 [1.69, 8.64]

3.2 1200 mg/day

1

172

Risk Ratio (M‐H, Fixed, 99% CI)

5.37 [0.77, 37.42]

3.3 1500 mg/day

2

380

Risk Ratio (M‐H, Fixed, 99% CI)

3.96 [1.79, 8.76]

4 Headache Show forest plot

1

Risk Ratio (M‐H, Fixed, 99% CI)

Subtotals only

4.1 All doses

1

264

Risk Ratio (M‐H, Fixed, 99% CI)

1.19 [0.43, 3.30]

4.2 1200 mg/day

1

172

Risk Ratio (M‐H, Fixed, 99% CI)

0.85 [0.24, 3.06]

4.3 1500 mg/day

1

177

Risk Ratio (M‐H, Fixed, 99% CI)

1.50 [0.50, 4.47]

5 Somnolence Show forest plot

1

Risk Ratio (M‐H, Fixed, 99% CI)

Subtotals only

5.1 All doses

1

264

Risk Ratio (M‐H, Fixed, 99% CI)

2.26 [0.57, 8.93]

5.2 1200 mg/day

1

172

Risk Ratio (M‐H, Fixed, 99% CI)

1.71 [0.36, 8.19]

5.3 1500 mg/day

1

177

Risk Ratio (M‐H, Fixed, 99% CI)

2.77 [0.66, 11.65]

6 Fatigue Show forest plot

1

Risk Ratio (M‐H, Fixed, 99% CI)

Subtotals only

6.1 All doses

1

264

Risk Ratio (M‐H, Fixed, 99% CI)

2.26 [0.57, 8.93]

6.2 1200 mg/day

1

172

Risk Ratio (M‐H, Fixed, 99% CI)

1.71 [0.36, 8.19]

6.3 1500 mg/day

1

177

Risk Ratio (M‐H, Fixed, 99% CI)

2.77 [0.66, 11.65]

7 Ataxia Show forest plot

1

Risk Ratio (M‐H, Fixed, 99% CI)

Subtotals only

7.1 All doses

1

264

Risk Ratio (M‐H, Fixed, 99% CI)

10.03 [0.24, 411.20]

7.2 1200 mg/day

1

172

Risk Ratio (M‐H, Fixed, 99% CI)

10.75 [0.24, 473.22]

7.3 1500 mg/day

1

177

Risk Ratio (M‐H, Fixed, 99% CI)

10.17 [0.23, 448.02]

8 Nausea Show forest plot

1

Risk Ratio (M‐H, Fixed, 99% CI)

Subtotals only

8.1 All doses

1

264

Risk Ratio (M‐H, Fixed, 99% CI)

0.85 [0.21, 3.45]

8.2 1200 mg/day

1

172

Risk Ratio (M‐H, Fixed, 99% CI)

0.39 [0.05, 3.25]

8.3 1500 mg/day

1

177

Risk Ratio (M‐H, Fixed, 99% CI)

1.29 [0.30, 5.56]

9 Diplopia Show forest plot

1

Risk Ratio (M‐H, Fixed, 99% CI)

Subtotals only

9.1 All doses

1

264

Risk Ratio (M‐H, Fixed, 99% CI)

2.85 [0.59, 13.70]

9.2 1200 mg/day

1

172

Risk Ratio (M‐H, Fixed, 99% CI)

2.28 [0.40, 12.90]

9.3 1500 mg/day

1

177

Risk Ratio (M‐H, Fixed, 99% CI)

3.39 [0.66, 17.33]

10 Abnormal vision Show forest plot

1

Risk Ratio (M‐H, Fixed, 99% CI)

Subtotals only

10.1 All doses

1

264

Risk Ratio (M‐H, Fixed, 99% CI)

2.37 [0.48, 11.68]

10.2 1200 mg/day

1

172

Risk Ratio (M‐H, Fixed, 99% CI)

1.63 [0.26, 10.25]

11 Vertigo Show forest plot

1

Risk Ratio (M‐H, Fixed, 99% CI)

Subtotals only

11.1 All doses

1

264

Risk Ratio (M‐H, Fixed, 99% CI)

6.17 [0.44, 87.50]

11.2 1200 mg/day

1

172

Risk Ratio (M‐H, Fixed, 99% CI)

5.86 [0.37, 92.10]

11.3 1500 mg/day

1

177

Risk Ratio (M‐H, Fixed, 99% CI)

6.47 [0.42, 98.79]

12 Depression Show forest plot

1

Risk Ratio (M‐H, Fixed, 99% CI)

Subtotals only

12.1 All doses

1

264

Risk Ratio (M‐H, Fixed, 99% CI)

0.63 [0.09, 4.40]

12.2 1200 mg/day

1

172

Risk Ratio (M‐H, Fixed, 99% CI)

0.98 [0.12, 7.71]

12.3 1500 mg/day

1

177

Risk Ratio (M‐H, Fixed, 99% CI)

0.92 [0.12, 7.30]

Figuras y tablas -
Comparison 3. Losigamone versus placebo: adverse events