Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

80 questions · 84 findings · 10 reviews

No studies found 24 · 28.6%GRADE not reported 6 · 7.1%Very low 13 · 15.5%Low 20 · 23.8%Moderate 10 · 11.9%High 11 · 13.1%

Topiramate vs valproate

Proportion of responders (at least 50% seizure frequency reduction in myoclonic seizures) · people with juvenile myoclonic epilepsy

It is very uncertain whether topiramate changes proportion of responders (at least 50% seizure frequency reduction… compared with valproate (very low certainty).

1 finding from 1 review

Topiramate vs valproate

Proportion of responders (at least 50% seizure frequency reduction in PGTCS) · people with juvenile myoclonic epilepsy

It is very uncertain whether topiramate changes proportion of responders (at least 50% seizure frequency reduction… compared with valproate (very low certainty).

1 finding from 1 review

Topiramate vs valproate

Seizure freedom · people with juvenile myoclonic epilepsy

It is very uncertain whether topiramate changes number of participants who were seizure‐free compared with valproate (very low certainty).

1 finding from 1 review

Topiramate vs placebo

50% or greater reduction in seizure frequency · people with drug‐resistant focal epilepsy

Topiramate leads to higher 50% or greater reduction in seizure frequency (ITT analysis) compared with placebo (high certainty).

1 finding from 1 review

Topiramate vs placebo

Adverse effects ‐ difficulty with concentration/concentration impaired/concentration‐attention difficulties · people with drug‐resistant focal epilepsy

Topiramate probably leads to higher adverse effects ‐ difficulty with concentration/concentration… compared with placebo (moderate certainty).

1 finding from 1 review

Topiramate vs carbamazepine

Time to treatment failure (any reason related to treatment) All participants ‐ adjusted by seizure type Range of · adults and children with newly onset partial or generalised epilepsy

Topiramate showed no clear difference in time to treatment failure (any reason related to treatment) All… compared with carbamazepine (moderate certainty).

1 finding from 1 review

Topiramate vs carbamazepine

Time to treatment failure (any reason related to treatment) Subgroup: focal onset seizures Range of · adults and children with newly onset partial or generalised epilepsy

Topiramate probably leads to higher time to treatment failure (any reason related to treatment)Subgroup:… compared with carbamazepine (moderate certainty).

1 finding from 1 review

Topiramate vs carbamazepine

Time to treatment failure (any reason related to treatment) Subgroup: generalised onset tonic‐clonic seizures or unclassified epilepsy Range of · adults and children with newly onset partial or generalised epilepsy

Topiramate showed no clear difference in time to treatment failure (any reason related to treatment)… compared with carbamazepine (low certainty).

1 finding from 1 review

Topiramate vs carbamazepine

Time to first seizure (post‐randomisation) All participants Range of · adults and children with newly onset partial or generalised epilepsy

Topiramate showed no clear difference in time to first seizure after randomisation All participants Range of compared with carbamazepine (high certainty).

1 finding from 1 review

Topiramate vs carbamazepine

Time to first seizure (post‐randomisation) Subgroup: focal onset seizures Range of · adults and children with newly onset partial or generalised epilepsy

Topiramate showed no clear difference in time to first seizure after randomisation Subgroup: focal onset… compared with carbamazepine (high certainty).

1 finding from 1 review

Topiramate vs carbamazepine

Time to first seizure after randomisation Subgroup: generalised onset tonic‐clonic seizures or unclassified epilepsy Range of · adults and children with newly onset partial or generalised epilepsy

Topiramate showed no clear difference in time to first seizure after randomisation Subgroup: generalised… compared with carbamazepine (moderate certainty).

1 finding from 1 review

Topiramate vs carbamazepine

Time to 12‐month remission ‐ all participants Range of · adults and children with newly onset partial or generalised epilepsy

Topiramate leads to lower time to 12‐month remission of seizures All participants Range of compared with carbamazepine (high certainty).

1 finding from 1 review

Topiramate vs carbamazepine

Time to achieve 12‐month remission (seizure‐free period) Subgroup: focal onset seizures Range of · adults and children with newly onset partial or generalised epilepsy

Topiramate leads to lower time to 12‐month remission of seizures Subgroup: focal onset… compared with carbamazepine (high certainty).

1 finding from 1 review

Topiramate vs carbamazepine

Time to 12‐month remission of seizures Subgroup: generalised onset tonic‐clonic seizures or unclassified epilepsy Range of · adults and children with newly onset partial or generalised epilepsy

Topiramate showed no clear difference in time to 12‐month remission of seizures Subgroup: generalised onset… compared with carbamazepine (moderate certainty).

1 finding from 1 review