Trial Outcomes & Findings for Low vs. Standard Daily Doses of Antiepileptic Drugs in Newly Diagnosed, Previously Untreated Epilepsy(STANDLOW) (NCT NCT03689114)

NCT ID: NCT03689114

Last Updated: 2025-07-08

Results Overview

The proportion of patients experiencing a treatment failure motivated by the need to change the assigned dose or the assigned drug for seizure relapse during the follow-up. All proportions are reported as percentages.

Recruitment status

COMPLETED

Study phase

PHASE4

Target enrollment

58 participants

Primary outcome timeframe

12 months

Results posted on

2025-07-08

Participant Flow

The pre-planned sample size of 374 participants was not reached due to COVID-19 pandemic and difficulties of each center in satisfying the inclusion criteria. The total number of enrolled and randomized patients was 58.

Participant milestones

Participant milestones
Measure
Low Dose
Dosage is in mg: low dose carbamazepine, 300 ; low dose levetiracetam, 500; low dose valproate, 300; low dose zonisamide, 150; low dose oxcarbazepine, 600; low dose topiramate, 100; low dose lamotrigine, 100; low dose gabapentin, 450. Study drugs are in form of tablets for daily administration. Study drug administration duration is 12 months. The choice of the drug is left to the caring physician's discretion but it must be limited to the AEDs marketed for monotherapy use. All the study drugs will be used according to the respective SPCs, which will be sent by the promoter to all the study investigators. Low dose carbamazepine: Carbamazepine, 300 mg/die Low dose levetiracetam: Levetiracetam 500 mg/die Low dose valproate: Valproate 300 mg/die Low dose zonisamide: Zonisamide 150 mg/die Low dose oxcarbazepine: Oxcarbazepine 600 mg/die Low dose topiramate: Topiramate 100 mg/die Low dose lamotrigine: Lamotrigine 100 mg/die Low dose gabapentin: Gabapentin 450 mg/die
Standard Dose
Dosage is in mg: standard dose carbamazepine 600; standard dose levetiracetam 1000; standard dose valproate, 600; standard dose zonisamide 300; standard dose oxcarbazepine 1200; standard dose topiramate, 200; standard dose lamotrigine, 200; standard dose gabapentin 900. Study drugs are in form of tablets for daily administration. Study drug administration duration is 12 months. The choice of the drug is left to the caring physician's discretion but it must be limited to the AEDs marketed for monotherapy use. All the study drugs will be used according to the respective SPCs, which will be sent by the promoter to all the study investigators. Standard dose carbamazepine: Carbamazepine 600 mg/die Standard dose levetiracetam: Levetiracetam 1000 mg/die Standard dose valproate: Valproate 600 mg/die Standard dose zonisamide: Zonisamide 300 mg/die Standard dose oxcarbazepine: Oxcarbazepine 1200 mg/die Standard dose topiramate: Topiramate 200 mg/die Standard dose lamotrigine: Lamotrigine 200 mg/die Standard dose gabapentin: Gabapentin 900 mg/die
Overall Study
STARTED
29
29
Overall Study
COMPLETED
27
25
Overall Study
NOT COMPLETED
2
4

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

Race and Ethnicity were not collected from any participant.

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Low Dose
n=29 Participants
Dosage is in mg: low dose carbamazepine, 300 ; low dose levetiracetam, 500; low dose valproate, 300; low dose zonisamide, 150; low dose oxcarbazepine, 600; low dose topiramate, 100; low dose lamotrigine, 100; low dose gabapentin, 450. Study drugs are in form of tablets for daily administration. Study drug administration duration is 12 months. The choice of the drug is left to the caring physician's discretion but it must be limited to the AEDs marketed for monotherapy use. All the study drugs will be used according to the respective SPCs, which will be sent by the promoter to all the study investigators. Low dose carbamazepine: Carbamazepine, 300 mg/die Low dose levetiracetam: Levetiracetam 500 mg/die Low dose valproate: Valproate 300 mg/die Low dose zonisamide: Zonisamide 150 mg/die Low dose oxcarbazepine: Oxcarbazepine 600 mg/die Low dose topiramate: Topiramate 100 mg/die Low dose lamotrigine: Lamotrigine 100 mg/die Low dose gabapentin: Gabapentin 450 mg/die
Standard Dose
n=29 Participants
Dosage is in mg: standard dose carbamazepine 600; standard dose levetiracetam 1000; standard dose valproate, 600; standard dose zonisamide 300; standard dose oxcarbazepine 1200; standard dose topiramate, 200; standard dose lamotrigine, 200; standard dose gabapentin 900. Study drugs are in form of tablets for daily administration. Study drug administration duration is 12 months. The choice of the drug is left to the caring physician's discretion but it must be limited to the AEDs marketed for monotherapy use. All the study drugs will be used according to the respective SPCs, which will be sent by the promoter to all the study investigators. Standard dose carbamazepine: Carbamazepine 600 mg/die Standard dose levetiracetam: Levetiracetam 1000 mg/die Standard dose valproate: Valproate 600 mg/die Standard dose zonisamide: Zonisamide 300 mg/die Standard dose oxcarbazepine: Oxcarbazepine 1200 mg/die Standard dose topiramate: Topiramate 200 mg/die Standard dose lamotrigine: Lamotrigine 200 mg/die Standard dose gabapentin: Gabapentin 900 mg/die
Total
n=58 Participants
Total of all reporting groups
Age, Continuous
51.6 years
n=29 Participants
55.5 years
n=29 Participants
54.9 years
n=58 Participants
Sex: Female, Male
Female
15 Participants
n=29 Participants
12 Participants
n=29 Participants
27 Participants
n=58 Participants
Sex: Female, Male
Male
14 Participants
n=29 Participants
17 Participants
n=29 Participants
31 Participants
n=58 Participants
Race and Ethnicity Not Collected
0 Participants
Race and Ethnicity were not collected from any participant.
Region of Enrollment
Italy
29 participants
n=29 Participants
29 participants
n=29 Participants
58 participants
n=58 Participants
Type of seizures
aware
10 Participants
n=29 Participants
4 Participants
n=29 Participants
14 Participants
n=58 Participants
Type of seizures
impaired awareness
19 Participants
n=29 Participants
25 Participants
n=29 Participants
44 Participants
n=58 Participants
Seizure frequency
<2/month
20 Participants
n=29 Participants
21 Participants
n=29 Participants
41 Participants
n=58 Participants
Seizure frequency
2-5/month
4 Participants
n=29 Participants
4 Participants
n=29 Participants
8 Participants
n=58 Participants
Seizure frequency
6-10/month
2 Participants
n=29 Participants
1 Participants
n=29 Participants
3 Participants
n=58 Participants
Seizure frequency
>10/month
3 Participants
n=29 Participants
2 Participants
n=29 Participants
5 Participants
n=58 Participants
Seizure frequency
not specified
0 Participants
n=29 Participants
1 Participants
n=29 Participants
1 Participants
n=58 Participants
Etiology
Structural
5 Participants
n=29 Participants
10 Participants
n=29 Participants
15 Participants
n=58 Participants
Etiology
Unknown
24 Participants
n=29 Participants
19 Participants
n=29 Participants
43 Participants
n=58 Participants
PSQ-18
General satisfaction
5 units on a scale
n=29 Participants
4 units on a scale
n=29 Participants
4 units on a scale
n=58 Participants
PSQ-18
Technical quality
4 units on a scale
n=29 Participants
4 units on a scale
n=29 Participants
4 units on a scale
n=58 Participants
PSQ-18
Interpersonal manner
4 units on a scale
n=29 Participants
4 units on a scale
n=29 Participants
4 units on a scale
n=58 Participants
PSQ-18
Communication
4 units on a scale
n=29 Participants
5 units on a scale
n=29 Participants
4.5 units on a scale
n=58 Participants
PSQ-18
Financial aspects
4 units on a scale
n=29 Participants
4 units on a scale
n=29 Participants
4 units on a scale
n=58 Participants
PSQ-18
Time spent with doctors
4 units on a scale
n=29 Participants
4 units on a scale
n=29 Participants
4 units on a scale
n=58 Participants
PSQ-18
Accessibility and convenience
4 units on a scale
n=29 Participants
4 units on a scale
n=29 Participants
4 units on a scale
n=58 Participants
Qolie 31
69 units on a scale
n=29 Participants
60 units on a scale
n=29 Participants
64 units on a scale
n=58 Participants
Time from first symptoms to diagnosis
5.7 months
n=29 Participants
3.2 months
n=29 Participants
4.6 months
n=58 Participants

PRIMARY outcome

Timeframe: 12 months

The proportion of patients experiencing a treatment failure motivated by the need to change the assigned dose or the assigned drug for seizure relapse during the follow-up. All proportions are reported as percentages.

Outcome measures

Outcome measures
Measure
Low Dose
n=29 Participants
Dosage is in mg: low dose carbamazepine, 300 ; low dose levetiracetam, 500; low dose valproate, 300; low dose zonisamide, 150; low dose oxcarbazepine, 600; low dose topiramate, 100; low dose lamotrigine, 100; low dose gabapentin, 450. Study drugs are in form of tablets for daily administration. Study drug administration duration is 12 months. The choice of the drug is left to the caring physician's discretion but it must be limited to the AEDs marketed for monotherapy use. All the study drugs will be used according to the respective SPCs, which will be sent by the promoter to all the study investigators. Low dose carbamazepine: Carbamazepine, 300 mg/die Low dose levetiracetam: Levetiracetam 500 mg/die Low dose valproate: Valproate 300 mg/die Low dose zonisamide: Zonisamide 150 mg/die Low dose oxcarbazepine: Oxcarbazepine 600 mg/die Low dose topiramate: Topiramate 100 mg/die Low dose lamotrigine: Lamotrigine 100 mg/die Low dose gabapentin: Gabapentin 450 mg/die
Standard Dose
n=29 Participants
Dosage is in mg: standard dose carbamazepine 600; standard dose levetiracetam 1000; standard dose valproate, 600; standard dose zonisamide 300; standard dose oxcarbazepine 1200; standard dose topiramate, 200; standard dose lamotrigine, 200; standard dose gabapentin 900. Study drugs are in form of tablets for daily administration. Study drug administration duration is 12 months. The choice of the drug is left to the caring physician's discretion but it must be limited to the AEDs marketed for monotherapy use. All the study drugs will be used according to the respective SPCs, which will be sent by the promoter to all the study investigators. Standard dose carbamazepine: Carbamazepine 600 mg/die Standard dose levetiracetam: Levetiracetam 1000 mg/die Standard dose valproate: Valproate 600 mg/die Standard dose zonisamide: Zonisamide 300 mg/die Standard dose oxcarbazepine: Oxcarbazepine 1200 mg/die Standard dose topiramate: Topiramate 200 mg/die Standard dose lamotrigine: Lamotrigine 200 mg/die Standard dose gabapentin: Gabapentin 900 mg/die
Treatment Failure
11 Participants
11 Participants

SECONDARY outcome

Timeframe: 12 months

the proportion of patients experiencing a treatment failure motivated by intolerable drug-related adverse events during the follow-up;

Outcome measures

Outcome measures
Measure
Low Dose
n=29 Participants
Dosage is in mg: low dose carbamazepine, 300 ; low dose levetiracetam, 500; low dose valproate, 300; low dose zonisamide, 150; low dose oxcarbazepine, 600; low dose topiramate, 100; low dose lamotrigine, 100; low dose gabapentin, 450. Study drugs are in form of tablets for daily administration. Study drug administration duration is 12 months. The choice of the drug is left to the caring physician's discretion but it must be limited to the AEDs marketed for monotherapy use. All the study drugs will be used according to the respective SPCs, which will be sent by the promoter to all the study investigators. Low dose carbamazepine: Carbamazepine, 300 mg/die Low dose levetiracetam: Levetiracetam 500 mg/die Low dose valproate: Valproate 300 mg/die Low dose zonisamide: Zonisamide 150 mg/die Low dose oxcarbazepine: Oxcarbazepine 600 mg/die Low dose topiramate: Topiramate 100 mg/die Low dose lamotrigine: Lamotrigine 100 mg/die Low dose gabapentin: Gabapentin 450 mg/die
Standard Dose
n=29 Participants
Dosage is in mg: standard dose carbamazepine 600; standard dose levetiracetam 1000; standard dose valproate, 600; standard dose zonisamide 300; standard dose oxcarbazepine 1200; standard dose topiramate, 200; standard dose lamotrigine, 200; standard dose gabapentin 900. Study drugs are in form of tablets for daily administration. Study drug administration duration is 12 months. The choice of the drug is left to the caring physician's discretion but it must be limited to the AEDs marketed for monotherapy use. All the study drugs will be used according to the respective SPCs, which will be sent by the promoter to all the study investigators. Standard dose carbamazepine: Carbamazepine 600 mg/die Standard dose levetiracetam: Levetiracetam 1000 mg/die Standard dose valproate: Valproate 600 mg/die Standard dose zonisamide: Zonisamide 300 mg/die Standard dose oxcarbazepine: Oxcarbazepine 1200 mg/die Standard dose topiramate: Topiramate 200 mg/die Standard dose lamotrigine: Lamotrigine 200 mg/die Standard dose gabapentin: Gabapentin 900 mg/die
Drug-related Adverse Events
3 Participants
3 Participants

SECONDARY outcome

Timeframe: 12 months

The score of the seven Patients Satisfaction Questionnaire 18 items (PSQ-18) subscales (general satisfaction, technical quality, interpersonal manner, communication, financial aspects, time spent with doctor, accessibility and convenience) at the last visit; the score of each subscale ranges from 1 (worst) to 5 (best).

Outcome measures

Outcome measures
Measure
Low Dose
n=20 Participants
Dosage is in mg: low dose carbamazepine, 300 ; low dose levetiracetam, 500; low dose valproate, 300; low dose zonisamide, 150; low dose oxcarbazepine, 600; low dose topiramate, 100; low dose lamotrigine, 100; low dose gabapentin, 450. Study drugs are in form of tablets for daily administration. Study drug administration duration is 12 months. The choice of the drug is left to the caring physician's discretion but it must be limited to the AEDs marketed for monotherapy use. All the study drugs will be used according to the respective SPCs, which will be sent by the promoter to all the study investigators. Low dose carbamazepine: Carbamazepine, 300 mg/die Low dose levetiracetam: Levetiracetam 500 mg/die Low dose valproate: Valproate 300 mg/die Low dose zonisamide: Zonisamide 150 mg/die Low dose oxcarbazepine: Oxcarbazepine 600 mg/die Low dose topiramate: Topiramate 100 mg/die Low dose lamotrigine: Lamotrigine 100 mg/die Low dose gabapentin: Gabapentin 450 mg/die
Standard Dose
n=17 Participants
Dosage is in mg: standard dose carbamazepine 600; standard dose levetiracetam 1000; standard dose valproate, 600; standard dose zonisamide 300; standard dose oxcarbazepine 1200; standard dose topiramate, 200; standard dose lamotrigine, 200; standard dose gabapentin 900. Study drugs are in form of tablets for daily administration. Study drug administration duration is 12 months. The choice of the drug is left to the caring physician's discretion but it must be limited to the AEDs marketed for monotherapy use. All the study drugs will be used according to the respective SPCs, which will be sent by the promoter to all the study investigators. Standard dose carbamazepine: Carbamazepine 600 mg/die Standard dose levetiracetam: Levetiracetam 1000 mg/die Standard dose valproate: Valproate 600 mg/die Standard dose zonisamide: Zonisamide 300 mg/die Standard dose oxcarbazepine: Oxcarbazepine 1200 mg/die Standard dose topiramate: Topiramate 200 mg/die Standard dose lamotrigine: Lamotrigine 200 mg/die Standard dose gabapentin: Gabapentin 900 mg/die
PSQ-18, Italian Version
General satisfaction
4.5 units on a scale
Interval 3.0 to 5.0
4 units on a scale
Interval 3.0 to 4.0
PSQ-18, Italian Version
Technical quality
4 units on a scale
Interval 3.5 to 5.0
4 units on a scale
Interval 4.0 to 4.0
PSQ-18, Italian Version
Interpersonal manner
5 units on a scale
Interval 4.0 to 5.0
4 units on a scale
Interval 3.0 to 5.0
PSQ-18, Italian Version
Communication
5 units on a scale
Interval 3.5 to 5.0
4 units on a scale
Interval 4.0 to 5.0
PSQ-18, Italian Version
Financial aspects
4.5 units on a scale
Interval 4.0 to 5.0
4 units on a scale
Interval 4.0 to 5.0
PSQ-18, Italian Version
Time spent with doctors
4 units on a scale
Interval 3.5 to 4.0
4 units on a scale
Interval 3.0 to 4.0
PSQ-18, Italian Version
Accessibility and convenience
4 units on a scale
Interval 3.5 to 5.0
4 units on a scale
Interval 4.0 to 4.0

SECONDARY outcome

Timeframe: 12 months

QoLIE-31 measures the quality of life of patients with epilepsy (range 0-100, where 0 corresponds to the worst quality of life and 100 corresponds to the best), at the end of study visit.

Outcome measures

Outcome measures
Measure
Low Dose
n=20 Participants
Dosage is in mg: low dose carbamazepine, 300 ; low dose levetiracetam, 500; low dose valproate, 300; low dose zonisamide, 150; low dose oxcarbazepine, 600; low dose topiramate, 100; low dose lamotrigine, 100; low dose gabapentin, 450. Study drugs are in form of tablets for daily administration. Study drug administration duration is 12 months. The choice of the drug is left to the caring physician's discretion but it must be limited to the AEDs marketed for monotherapy use. All the study drugs will be used according to the respective SPCs, which will be sent by the promoter to all the study investigators. Low dose carbamazepine: Carbamazepine, 300 mg/die Low dose levetiracetam: Levetiracetam 500 mg/die Low dose valproate: Valproate 300 mg/die Low dose zonisamide: Zonisamide 150 mg/die Low dose oxcarbazepine: Oxcarbazepine 600 mg/die Low dose topiramate: Topiramate 100 mg/die Low dose lamotrigine: Lamotrigine 100 mg/die Low dose gabapentin: Gabapentin 450 mg/die
Standard Dose
n=18 Participants
Dosage is in mg: standard dose carbamazepine 600; standard dose levetiracetam 1000; standard dose valproate, 600; standard dose zonisamide 300; standard dose oxcarbazepine 1200; standard dose topiramate, 200; standard dose lamotrigine, 200; standard dose gabapentin 900. Study drugs are in form of tablets for daily administration. Study drug administration duration is 12 months. The choice of the drug is left to the caring physician's discretion but it must be limited to the AEDs marketed for monotherapy use. All the study drugs will be used according to the respective SPCs, which will be sent by the promoter to all the study investigators. Standard dose carbamazepine: Carbamazepine 600 mg/die Standard dose levetiracetam: Levetiracetam 1000 mg/die Standard dose valproate: Valproate 600 mg/die Standard dose zonisamide: Zonisamide 300 mg/die Standard dose oxcarbazepine: Oxcarbazepine 1200 mg/die Standard dose topiramate: Topiramate 200 mg/die Standard dose lamotrigine: Lamotrigine 200 mg/die Standard dose gabapentin: Gabapentin 900 mg/die
QoLIE-31, Italian Version
68 units on a scale
Interval 56.5 to 76.5
64.5 units on a scale
Interval 55.0 to 78.0

SECONDARY outcome

Timeframe: 12 months

The mean daily patient's cost of health care resources consumed for the management of epilepsy during the first 12 months of the study.

Outcome measures

Outcome measures
Measure
Low Dose
n=29 Participants
Dosage is in mg: low dose carbamazepine, 300 ; low dose levetiracetam, 500; low dose valproate, 300; low dose zonisamide, 150; low dose oxcarbazepine, 600; low dose topiramate, 100; low dose lamotrigine, 100; low dose gabapentin, 450. Study drugs are in form of tablets for daily administration. Study drug administration duration is 12 months. The choice of the drug is left to the caring physician's discretion but it must be limited to the AEDs marketed for monotherapy use. All the study drugs will be used according to the respective SPCs, which will be sent by the promoter to all the study investigators. Low dose carbamazepine: Carbamazepine, 300 mg/die Low dose levetiracetam: Levetiracetam 500 mg/die Low dose valproate: Valproate 300 mg/die Low dose zonisamide: Zonisamide 150 mg/die Low dose oxcarbazepine: Oxcarbazepine 600 mg/die Low dose topiramate: Topiramate 100 mg/die Low dose lamotrigine: Lamotrigine 100 mg/die Low dose gabapentin: Gabapentin 450 mg/die
Standard Dose
n=29 Participants
Dosage is in mg: standard dose carbamazepine 600; standard dose levetiracetam 1000; standard dose valproate, 600; standard dose zonisamide 300; standard dose oxcarbazepine 1200; standard dose topiramate, 200; standard dose lamotrigine, 200; standard dose gabapentin 900. Study drugs are in form of tablets for daily administration. Study drug administration duration is 12 months. The choice of the drug is left to the caring physician's discretion but it must be limited to the AEDs marketed for monotherapy use. All the study drugs will be used according to the respective SPCs, which will be sent by the promoter to all the study investigators. Standard dose carbamazepine: Carbamazepine 600 mg/die Standard dose levetiracetam: Levetiracetam 1000 mg/die Standard dose valproate: Valproate 600 mg/die Standard dose zonisamide: Zonisamide 300 mg/die Standard dose oxcarbazepine: Oxcarbazepine 1200 mg/die Standard dose topiramate: Topiramate 200 mg/die Standard dose lamotrigine: Lamotrigine 200 mg/die Standard dose gabapentin: Gabapentin 900 mg/die
Health Care Resources Utilization.
252.46 euro
Interval 167.9 to 252.46
474.50 euro
Interval 338.92 to 677.86

Adverse Events

Low Dose

Serious events: 2 serious events
Other events: 9 other events
Deaths: 0 deaths

Standard Dose

Serious events: 1 serious events
Other events: 11 other events
Deaths: 0 deaths

Serious adverse events

Serious adverse events
Measure
Low Dose
n=29 participants at risk
Dosage is in mg: low dose carbamazepine, 300; low dose levetiracetam, 500; low dose valproate, 300; low dose zonisamide, 150; low dose oxcarbazepine, 600; low dose topiramate, 100; low dose lamotrigine, 100; low dose gabapentin, 450; low dose lacosamide 100 mg. Study drugs are in form of tablets for daily administration. Study drug administration duration is 12 months. The choice of the drug is left to the caring physician's discretion but it must be limited to the AEDs marketed for monotherapy use. All the study drugs will be used according to the respective SPCs, which will be sent by the promoter to all the study investigators. The arm/group "low dose" includes all the interventions listed above which correspond to low dose of each antiepileptic monotherapy. All the results were grouped by arm/group. In the adverse events tables all the single drugs were specified in each arm/group. The aim of this study was to compare the low dose arm/group versus the standard dose arm/group independently from the specific intervention/drug prescribed by the neurologist. Randomization was done by dose and not by drug. The drug has been chosen by the treating physician.
Standard Dose
n=29 participants at risk
Dosage is in mg: standard dose carbamazepine 600; standard dose levetiracetam 1000; standard dose valproate, 600; standard dose zonisamide 300; standard dose oxcarbazepine 1200; standard dose topiramate, 200; standard dose lamotrigine, 200; standard dose gabapentin 900; standard dose lacosamide 200 mg. Study drugs are in form of tablets for daily administration. Study drug administration duration is 12 months. The choice of the drug is left to the caring physician's discretion but it must be limited to the AEDs marketed for monotherapy use. All the study drugs will be used according to the respective SPCs, which will be sent by the promoter to all the study investigators. The arm/group "standard dose" includes all the interventions listed above which correspond to standard dose of each antiepileptic monotherapy. All the results were grouped by arm/group. In the adverse events tables all the single drugs were specified in each arm/group. The aim of this study was to compare the low dose arm/group versus the standard dose arm/group independently from the specific intervention/drug prescribed by the neurologist. Randomization was done by dose and not by drug. The drug has been chosen by the treating physician.
Cardiac disorders
HEART FAILURE
3.4%
1/29 • 12 months
0.00%
0/29 • 12 months
Nervous system disorders
DYSARTHRIA
3.4%
1/29 • 12 months
0.00%
0/29 • 12 months
Cardiac disorders
OTHER, SPECIFY
3.4%
1/29 • 12 months
0.00%
0/29 • 12 months
Nervous system disorders
status epilepticus
0.00%
0/29 • 12 months
3.4%
1/29 • 12 months

Other adverse events

Other adverse events
Measure
Low Dose
n=29 participants at risk
Dosage is in mg: low dose carbamazepine, 300; low dose levetiracetam, 500; low dose valproate, 300; low dose zonisamide, 150; low dose oxcarbazepine, 600; low dose topiramate, 100; low dose lamotrigine, 100; low dose gabapentin, 450; low dose lacosamide 100 mg. Study drugs are in form of tablets for daily administration. Study drug administration duration is 12 months. The choice of the drug is left to the caring physician's discretion but it must be limited to the AEDs marketed for monotherapy use. All the study drugs will be used according to the respective SPCs, which will be sent by the promoter to all the study investigators. The arm/group "low dose" includes all the interventions listed above which correspond to low dose of each antiepileptic monotherapy. All the results were grouped by arm/group. In the adverse events tables all the single drugs were specified in each arm/group. The aim of this study was to compare the low dose arm/group versus the standard dose arm/group independently from the specific intervention/drug prescribed by the neurologist. Randomization was done by dose and not by drug. The drug has been chosen by the treating physician.
Standard Dose
n=29 participants at risk
Dosage is in mg: standard dose carbamazepine 600; standard dose levetiracetam 1000; standard dose valproate, 600; standard dose zonisamide 300; standard dose oxcarbazepine 1200; standard dose topiramate, 200; standard dose lamotrigine, 200; standard dose gabapentin 900; standard dose lacosamide 200 mg. Study drugs are in form of tablets for daily administration. Study drug administration duration is 12 months. The choice of the drug is left to the caring physician's discretion but it must be limited to the AEDs marketed for monotherapy use. All the study drugs will be used according to the respective SPCs, which will be sent by the promoter to all the study investigators. The arm/group "standard dose" includes all the interventions listed above which correspond to standard dose of each antiepileptic monotherapy. All the results were grouped by arm/group. In the adverse events tables all the single drugs were specified in each arm/group. The aim of this study was to compare the low dose arm/group versus the standard dose arm/group independently from the specific intervention/drug prescribed by the neurologist. Randomization was done by dose and not by drug. The drug has been chosen by the treating physician.
Psychiatric disorders
IRRITABILITY
3.4%
1/29 • Number of events 1 • 12 months
6.9%
2/29 • Number of events 2 • 12 months
Nervous system disorders
Fatigue
6.9%
2/29 • Number of events 2 • 12 months
10.3%
3/29 • Number of events 3 • 12 months
Nervous system disorders
Dizziness
6.9%
2/29 • Number of events 2 • 12 months
0.00%
0/29 • 12 months
Eye disorders
rash maculo-papular
0.00%
0/29 • 12 months
6.9%
2/29 • Number of events 2 • 12 months
Nervous system disorders
Somnolence
13.8%
4/29 • Number of events 4 • 12 months
13.8%
4/29 • Number of events 4 • 12 months

Additional Information

Giorgia Giussani

Istituto di Ricerche Farmacologiche Mario Negri IRCCS

Phone: 0239014604

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place