Cochrane · systematic review · CD007783

Lamotrigine add‐on therapy for drug‐resistant generalised tonic‐clonic seizures

Bresnahan, R, Panebianco, M, Marson, AG · Cochrane Database of Systematic Reviews · 2020 · Cochrane Library

EpilepsyAMSTAR 2: not assessed
SoF tableOnly the outcomes this review put in its Summary of Findings table are listed (the Cochrane Handbook caps them at about seven per comparison). Its other analyses are not shown here.
Questions
4
current version
GRADE rated
4
No studies
0
Included studies
NR
No studies 0 · 0%Ungraded 0 · 0%Very low 3 · 75%Low 1 · 25%Moderate 0 · 0%High 0 · 0%

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.

Questions and results

Add‐on lamotrigine compared to placebo for drug‐resistant generalised tonic‐clonic seizures

Population: people with drug‐resistant generalised tonic‐clonic seizures
4 questions
OutcomeEffectEvidenceStatus / GRADE
50% or greater reduction in seizure frequency
Add‐on lamotrigine vs placebo
RR 1.88 [1.43, 2.45]2 studies · 270 participantsLow
Downgraded: risk of bias, imprecision
Seizure freedom (i.e. total cessation of seizure activity)
Add‐on lamotrigine vs placebo
RR 1.55 [0.89, 2.72]2 studies · 270 participantsVery low
Downgraded: risk of bias, imprecision
Treatment withdrawal
Add‐on lamotrigine vs placebo
RR 1.2 [0.72, 1.99]2 studies · 270 participantsVery low
Downgraded: risk of bias, imprecision
Adverse effects
Add‐on lamotrigine vs placebo
RR 0.91 [0.29, 2.86]2 studies · 270 participantsVery low
Downgraded: risk of bias, imprecision