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The Efficacy and Safety of Low Dose Combination of LTG and VPA Compared to CBZ Monotherapy

An Open Label, Randomized, Multicenter Clinical Trial to Compare the Efficacy and Safety of Lamotrigine / Valproate Coadministration and Carbamazepine as Initial Pharmacotherapy in Epilepsies (Phase Ⅳ)

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00807989
Enrollment
207
Registered
2008-12-15
Start date
2008-03-31
Completion date
2012-05-31
Last updated
2015-07-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Epilepsy

Brief summary

To evaluate the efficacy of usual monotherapy and low dose combination of Lamotrigine and Valproate. Low dose combination may be more effective and tolerable because they are low dose and VPA reduce Lamotrigine metabolism.

Detailed description

An Open label, Randomized, Multicenter Clinical Trial to Compare the Efficacy and Safety of Lamotrigine / Valproate Coadministration and Carbamazepine as Initial Pharmacotherapy in Epilepsies

Interventions

DRUGCarbamazepine
DRUGLamotrigine/Valproate

Sponsors

Yonsei University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
16 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Age ≥16yr old * Who are diagnosed as epilepsy definitely * Who have minimum 2 unprovoked seizures and minimum 1 seizure in previous 3 months * Who need AED therapy and no AED medication for previous 1 year (exclude emergency medication for less than 2weeks) * Who is not pregnant * Who can report seizure diary by him/herself or caregiver * Who agree to this trial and provide informed consent. * Type of seizures : of generalized tonic-clonic, complex partial, and/or simple partial motor seizures;

Exclusion criteria

* Who has progressive CNS disease. * Has serious systemic or psychiatric disease * Who is not suitable by investigator(uncooperative) * Who can not fill up diary check card * Is pregnant, breastfeeding, or planning to become pregnant * Exclusion - absence s. juvenile myoclonic epilepsy, atonic seizure, alcohol or other substance abusers, mental retardation etc. * Who cancels to agree to this trial and provide informed consent. * ALT, AST, bilirubin and BUN/Cr levels are more than twice normal range of them * WBC value is 2000 and less, Hb value is 9.0 and less, platelet count is 100,000 and less in CBC * Who took investigation products before participating this study

Design outcomes

Primary

MeasureTime frameDescription
Retention Rate After 52 Weeks Maintenance Period52 weeks\* Retention rate means completion rate (CR), the proportion of patients who have completed the 60-week study as planned.

Secondary

MeasureTime frame
Seizure Free Rate for 24 Weeks at Initial Target Dose24 weeks
Seizure Free Rate for 52 Weeks at Initial Target Dose52 weeks

Countries

South Korea

Participant flow

Participants by arm

ArmCount
Carbamazepine
Carbamazepine Carbamazepine
104
Lamotrigine/Valproate
Lamotrigine and Valproate combination therapy Lamotrigine/Valproate
98
Total202

Baseline characteristics

CharacteristicCarbamazepineLamotrigine/ValproateTotal
Age, Continuous33.2 Year
STANDARD_DEVIATION 14.6
36.5 Year
STANDARD_DEVIATION 13.7
34.8 Year
STANDARD_DEVIATION 14.2
Region of Enrollment
Korea, Republic of
104 participants98 participants202 participants
Sex: Female, Male
Female
51 Participants48 Participants99 Participants
Sex: Female, Male
Male
53 Participants50 Participants103 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
60 / 10459 / 98
serious
Total, serious adverse events
9 / 1040 / 98

Outcome results

Primary

Retention Rate After 52 Weeks Maintenance Period

\* Retention rate means completion rate (CR), the proportion of patients who have completed the 60-week study as planned.

Time frame: 52 weeks

ArmMeasureValue (NUMBER)
CarbamazepineRetention Rate After 52 Weeks Maintenance Period104 participants
Lamotrigine/ValproateRetention Rate After 52 Weeks Maintenance Period98 participants
Secondary

Seizure Free Rate for 24 Weeks at Initial Target Dose

Time frame: 24 weeks

ArmMeasureValue (NUMBER)
CarbamazepineSeizure Free Rate for 24 Weeks at Initial Target Dose51 participants
Lamotrigine/ValproateSeizure Free Rate for 24 Weeks at Initial Target Dose59 participants
Secondary

Seizure Free Rate for 52 Weeks at Initial Target Dose

Time frame: 52 weeks

ArmMeasureValue (NUMBER)
CarbamazepineSeizure Free Rate for 52 Weeks at Initial Target Dose43 participants
Lamotrigine/ValproateSeizure Free Rate for 52 Weeks at Initial Target Dose50 participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026