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The Cochrane Database of Systematic... Nov 2016Most people with epilepsy have a good prognosis and their seizures can be well controlled with the use of a single antiepileptic drug, but up to 30% develop refractory... (Review)
Review
BACKGROUND
Most people with epilepsy have a good prognosis and their seizures can be well controlled with the use of a single antiepileptic drug, but up to 30% develop refractory epilepsy, especially those with partial seizures. In this review we summarize the current evidence regarding oxcarbazepine when used as an add-on treatment for drug-resistant partial epilepsy.
OBJECTIVES
To evaluate the effects of oxcarbazepine when used as an add-on treatment for drug-resistant partial epilepsy.
SEARCH METHODS
We searched the Cochrane Epilepsy Group's Specialized Register (28 March 2006), the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library Issue 1, 2006), MEDLINE (1966 to March 2006). No language restrictions were imposed. We checked the reference lists of retrieved studies for additional reports of relevant studies. We also contacted Novartis (manufacturers of oxcarbazepine) and experts in the field.
SELECTION CRITERIA
Randomized, placebo-controlled, double-blinded, add-on trials of oxcarbazepine in patients with drug-resistant partial epilepsy.
DATA COLLECTION AND ANALYSIS
Two review authors independently assessed trials for inclusion and extracted the relevant data. The following outcomes were assessed : (a) 50% or greater reduction in seizure frequency; (b) treatment withdrawal (any reason); (c) side effects. Primary analyses were intention-to-treat. Summary odds ratios were estimated for each outcome.
MAIN RESULTS
Two trials were included representing 961 randomized patients.Overall Odds Ratio (OR) (95% Confidence Interval (CIs)) for 50% or greater reduction in seizure frequency compared to placebo 2.96 (2.20, 4.00).Treatment withdrawal OR (95% CIs) compared to placebo 2.17 (1.59, 2.97).Side effects: OR (99% CIs) compared to placebo, ataxia 2.93 (1.72, 4.99); dizziness 3.05 (1.99, 4.67); fatigue 1.80 (1.02, 3.19); nausea 2.88 (1.77, 4.69); somnolence 2.55 (1.84, 3.55); diplopia 4.32 (2.65, 7.04), were significantly associated with oxcarbazepine.
AUTHORS' CONCLUSIONS
Oxcarbazepine has efficacy as an add-on treatment in patients with drug-resistant partial epilepsy, both in adults and children. However, trials reviewed were of relatively short duration, and provide no evidence about the long-term effects of oxcarbazepine. Results cannot be extrapolated to monotherapy or to patients with other epilepsy types.
Topics: Adult; Anticonvulsants; Carbamazepine; Child; Drug Resistance; Drug Therapy, Combination; Epilepsies, Partial; Humans; Outcome Assessment, Health Care; Oxcarbazepine; Randomized Controlled Trials as Topic
PubMed: 27845825
DOI: 10.1002/14651858.CD002028.pub2 -
Brain and Behavior Nov 2022To compare the efficacy and safety of Levetiracetam (LEV) and Oxcarbazepine (OXC) as monotherapy for the treatment of newly diagnosed focal epilepsy. (Meta-Analysis)
Meta-Analysis Review
OBJECTIVE
To compare the efficacy and safety of Levetiracetam (LEV) and Oxcarbazepine (OXC) as monotherapy for the treatment of newly diagnosed focal epilepsy.
METHODS
We searched PubMed, Cochrane Library, EMBASE, and Google Scholar from January 1, 2000 to May 11, 2022, with no language restrictions along with The ClinicalTrials.gov website and the WHO International Controlled Trials Registry platforms. We pooled the risk ratio (RR) and corresponding 95% confidence interval (95% CI) for the efficacy and safety outcomes. The quality of included trials was assessed using the Cochrane Collaboration's tool.
RESULTS
Two RCTs included a total of 574 newly diagnosed focal epilepsy patients (the LEV group [282 patients] and the OXC group [292 patients]). LEV group when compared with the OXC group had no significant difference in the pooled estimate of seizure freedom at week 24. (RR: 0.81; 95% CI: 0.62-1.05, p = .11). Similarly, there was no significant difference in the pooled estimate of withdrawal due to adverse events (AEs) (RR: 0.87; 95% CI: 0.34-2.23, p = .77). The commonly reported AEs in both trials were dizziness, headache, rash, somnolence, and nasopharyngitis with zero medication-related death and few serious AEs.
CONCLUSIONS
LEV is noninferior to OXC in terms of seizure freedom at week 24 and treatment withdrawal rate due to AEs among adults but long-term treatment data is still missing. Future multicentric double-blinded RCTs and real-world studies are of great need.
Topics: Adult; Humans; Oxcarbazepine; Levetiracetam; Anticonvulsants; Epilepsies, Partial
PubMed: 36184821
DOI: 10.1002/brb3.2779 -
Journal of Pain and Symptom Management May 2003Oxcarbazepine is a second-generation antiepileptic drug (AED) with proven efficacy in managing partial epileptic seizures, with or without secondary generalization, in... (Review)
Review
Oxcarbazepine is a second-generation antiepileptic drug (AED) with proven efficacy in managing partial epileptic seizures, with or without secondary generalization, in adults and children. The overlap between the underlying pathophysiologic mechanisms of some epilepsy models and neuropathic pain models supports the rationale for using certain AEDs in the treatment of neuropathic pain. Several AEDs have reportedly produced analgesia in a range of neuropathic pains, including painful diabetic neuropathy (PDN) and post-herpetic neuralgia. Increasing evidence suggests that oxcarbazepine can provide significant analgesia in several neuropathic pain conditions, including trigeminal neuralgia and PDN, and is also may be effective in treating neuropathic pain refractory to other AEDs, such as carbamazepine and gabapentin. The analgesic effects of oxcarbazepine, and its generally improved safety and tolerability profile compared with other standard AEDs, suggests that oxcarbazepine will be an important addition to the neuropathic pain armamentarium. The rationale and evidence to support the efficacy of oxcarbazepine are presented here.
Topics: Anticonvulsants; Carbamazepine; Central Nervous System Diseases; Clinical Trials as Topic; Diabetic Neuropathies; Evidence-Based Medicine; Humans; Neuralgia; Oxcarbazepine; Pain; Peripheral Nervous System Diseases; Therapeutics; Trigeminal Neuralgia
PubMed: 12694990
DOI: 10.1016/s0885-3924(03)00067-8 -
Epilepsia May 2023Loss-of-function variants in SCN1A cause Dravet syndrome, the most common genetic developmental and epileptic encephalopathy (DEE). However, emerging evidence suggests...
OBJECTIVE
Loss-of-function variants in SCN1A cause Dravet syndrome, the most common genetic developmental and epileptic encephalopathy (DEE). However, emerging evidence suggests separate entities of SCN1A-related disorders due to gain-of-function variants. Here, we aim to refine the clinical, genetic, and functional electrophysiological features of a recurrent p.R1636Q gain-of-function variant, identified in four individuals at a single center.
METHODS
Individuals carrying the recurrent SCN1A p.R1636Q variant were identified through diagnostic testing. Whole cell voltage-clamp electrophysiological recording in HEK-293 T cells was performed to compare the properties of sodium channels containing wild-type Na 1.1 or Na 1.1-R1636Q along with both Na β1 and Na β2 subunits, including response to oxcarbazepine. To delineate differences from other SCN1A-related epilepsies, we analyzed electronic medical records.
RESULTS
All four individuals had an early onset DEE characterized by focal tonic seizures and additional seizure types starting in the first few weeks of life. Electrophysiological analysis showed a mixed gain-of-function effect with normal current density, a leftward (hyperpolarized) shift of steady-state inactivation, and slower inactivation kinetics leading to a prominent late sodium current. The observed functional changes closely paralleled effects of pathogenic variants in SCN3A and SCN8A at corresponding positions. Both wild type and variant exhibited sensitivity to block by oxcarbazepine, partially correcting electrophysiological abnormalities of the SCN1A p.R1636Q variant. Clinically, a single individual responded to treatment with oxcarbazepine. Across 51 individuals with SCN1A-related epilepsies, those with the recurrent p.R1636Q variants had the earliest ages at onset.
SIGNIFICANCE
The recurrent SCN1A p.R1636Q variant causes a clinical entity with a wider clinical spectrum than previously reported, characterized by neonatal onset epilepsy and absence of prominent movement disorder. Functional consequences of this variant lead to mixed loss and gain of function that is partially corrected by oxcarbazepine. The recurrent p.R1636Q variant represents one of the most common causes of early onset SCN1A-related epilepsies with separate treatment and prognosis implications.
Topics: Humans; Infant, Newborn; Epilepsies, Myoclonic; Epilepsy; Gain of Function Mutation; HEK293 Cells; Mutation; NAV1.1 Voltage-Gated Sodium Channel; Oxcarbazepine
PubMed: 36287100
DOI: 10.1111/epi.17444 -
BMC Pediatrics Oct 2023Self-limited infantile epilepsy (SeLIE) is a benign epilepsy. Previous studies have shown that monotherapy with most antiseizure medications can effectively relieve...
INTRODUCTION
Self-limited infantile epilepsy (SeLIE) is a benign epilepsy. Previous studies have shown that monotherapy with most antiseizure medications can effectively relieve seizures in patients with SeLIE, but the efficacy of levetiracetam has not been investigated.
OBJECTIVE
This study aimed to investigate the efficacy of levetiracetam in the treatment of SeLIE patients with PRRT2 mutations.
METHODS
The clinical data of 39 SeLIE patients (21 males and 18 females, aged 4.79 ± 1.60 months) with pathogenic variants in PRRT2 or 16p11.2 microdeletion were retrospectively analyzed. Based on the use of initial antiseizure medication (ASM), the patients were classified into two groups: Levetiracetam group (LEG) and Other ASMs group (OAG). The difference of efficacy between the two groups was compared.
RESULTS
Among the 39 SeLIE patients, 16 were LEG (10 males and 6 females, aged 5.25 ± 2.07 months), with whom two obtained a seizure-free status (12.50%) and 14 ineffective or even deteriorated (87.50%). Among the 14 ineffective or deteriorated cases, 13 were seizure-controlled after replacing levetiracetam with other ASMs including topiramate, oxcarbazepine, lamotrigine, and valproate, and the remaining one finally achieved remission at age 3. Of the 39 patients, 23 were OAG (11 males and 12 females; aged 4.48 ± 1.12 months), of whom 22 achieved seizure remission, except for one patient who was ineffective with topiramate initially and relieved by oxcarbazepine instead. Although there were no significant differences in gender and age of onset between the two groups, the effective rate was significantly different (12.50% in LEG vs. 95.65% in OAG) (P < 0.01).
CONCLUSION
The findings showed that patients with SeLIE caused by the PRRT2 mutations did not benefit from the use of levetiracetam, but could benefit from other ASMs.
Topics: Child, Preschool; Female; Humans; Male; Anticonvulsants; Epilepsy; Levetiracetam; Membrane Proteins; Nerve Tissue Proteins; Oxcarbazepine; Retrospective Studies; Seizures; Topiramate; Infant
PubMed: 37880614
DOI: 10.1186/s12887-023-04212-w -
Epilepsy Research Nov 2023The neonatal and infantile period is the age group with the highest incidence of epilepsy, in which gene variants in sodium and potassium channels are an important...
OBJECTIVE
The neonatal and infantile period is the age group with the highest incidence of epilepsy, in which gene variants in sodium and potassium channels are an important etiology, so the sodium channel blocker class of antiseizure medications may be effective in the treatment of early onset epilepsy. This study aimed to summarize the efficacy and tolerability of oxcarbazepine (OXC) in the treatment of focal epilepsy in neonates and infants under 3 months of age.
METHODS
A retrospective analysis of children with focal epilepsy onset within 3 months of age and treated with OXC in a tertiary pediatric epilepsy center in China was conducted. The efficacy, tolerability and influencing factors of OXC were evaluated.
RESULTS
A total of 50 patients were enrolled, with a median age of epilepsy onset of 11.5 (2, 42) days. There were 32 cases of early infantile developmental and epileptic encephalopathy, 10 cases of self-limited neonatal or neonatal-infantile epilepsy, and 8 cases of focal epilepsy that could not be classified as epileptic syndrome. The median age of application of OXC was 47 (31, 66) days. The median follow-up time was 16.5 (10, 25) months, with 7 deaths. Thirty-eight cases (76.0 %) were effective with OXC treatment, including 28 cases (56.0 %) achieved seizure freedom. Of the 34 cases whose pathogenesis involved genetic factors, 19 cases with sodium/ potassium channel gene variants had higher effective and seizure-free rates than those with other gene variants. The most common adverse event was transient hyponatremia. 2 cases had rash and 2 cases had abnormal electrocardiogram, 3 of which discontinued OXC.
SIGNIFICANCE
This single-center retrospective study suggests that OXC is effective and tolerable for the treatment of focal epilepsy in neonates and infants under 3 months of age. The efficacy of OXC is better in patients with sodium/ potassium channel gene variants.
Topics: Child; Infant, Newborn; Humans; Infant; Oxcarbazepine; Retrospective Studies; Anticonvulsants; Carbamazepine; Epilepsies, Partial; Epilepsy; Sodium; Potassium Channels
PubMed: 37852019
DOI: 10.1016/j.eplepsyres.2023.107240 -
Epilepsia Mar 2021To ascertain whether adverse effects experienced by people taking carbamazepine or oxcarbazepine could be attributed to carbamazepine- or oxcarbazepine-induced... (Observational Study)
Observational Study
OBJECTIVE
To ascertain whether adverse effects experienced by people taking carbamazepine or oxcarbazepine could be attributed to carbamazepine- or oxcarbazepine-induced hyponatremia (COIH).
METHODS
We performed an observational study, collecting data between 2017 and 2019 on serum sodium levels and adverse effects retrospectively in people with epilepsy while receiving treatment with either carbamazepine (CBZ) or oxcarbazepine (OXC). We defined hyponatremia as sodium level ≤134 mEq/L and severe hyponatremia as sodium level ≤128 mEq/L. Adverse effects experienced were compared between groups of individuals with and without hyponatremia.
RESULTS
A total of 1370 people using CBZ or OXC were identified, of whom 410 had at least one episode of hyponatremia. We checked for symptoms related to the use of CBZ and OXC in 710 people (410 with and 300 without hyponatremia) and found relevant information in 688. Adverse effects occurred in 65% of people with hyponatremia compared to 21% with normal sodium levels (odds ratio [OR] 7.5, P ≤ .001) and in 83% of people with severe hyponatremia compared to 55% in those with mild hyponatremia (P ≤ .001). Significant predictors of adverse effects were the drug (OXC vs CBZ), and the number of concomitant anti-seizure medications. Dizziness (28% vs 6%), tiredness (22% vs 7%), instability (19% vs 3%), and diplopia (16% vs 4%) were reported more often in the hyponatremia group than in patients with normal levels.
SIGNIFICANCE
People with COIH had a 7-fold increased risk of developing adverse effects during treatment. Clinicians should consider ascertainment of sodium levels in patients taking CBZ and OXC and act upon findings.
Topics: Adult; Anticonvulsants; Carbamazepine; Dizziness; Epilepsy; Fatigue; Female; Humans; Hyponatremia; Male; Middle Aged; Oxcarbazepine; Retrospective Studies; Sodium
PubMed: 33576502
DOI: 10.1111/epi.16828 -
Journal of Clinical Neurology (Seoul,... Jan 2017Antiepileptic drug (AED)-associated cutaneous adverse drug reactions can lead to the discontinuation of medications. The aim of this study was to determine the long-term...
BACKGROUND AND PURPOSE
Antiepileptic drug (AED)-associated cutaneous adverse drug reactions can lead to the discontinuation of medications. The aim of this study was to determine the long-term efficacy and safety of performing desensitization to oxcarbazepine.
METHODS
This study involved 20 patients who exhibited cutaneous adverse drug reactions associated with oxcarbazepine use between July 2009 and March 2016 at Samsung Medical Center. All of the participants had to discontinue oxcarbazepine despite presenting initially positive responses. Human leukocyte antigen genotyping was performed to detect the genetic predisposition to Stevens-Johnson syndrome. The desensitization to oxcarbazepine was performed with a starting dosage of 0.1 mg/day. Efficacy was evaluated by comparing the frequency of seizures before and at 1 and 3 years after desensitization. Adverse events occurring during desensitization and the retention rate after desensitization were also investigated.
RESULTS
Nineteen patients (95%) safely completed the desensitization protocol. One withdrew owing to emotional problems that appeared to be associated with oxcarbazepine. The follow-up period was 4.6±1.2 years (mean±SD), and oxcarbazepine was maintained for more than 3 years after desensitization in 15 patients (83.3%). The response rates were 84.2% and 77.8% at 1 and 3 years after desensitization, respectively. Eight patients remained seizure-free for 3 years, and two discontinued all AEDs. Transient adverse reactions such as mild rash and itching were reported by five patients during desensitization.
CONCLUSIONS
This study has demonstrated the long-term efficacy and safety of desensitization to oxcarbazepine in patients exhibiting cutaneous adverse drug reactions. This favorable outcome should encourage the implementation of desensitization in patients presenting with hypersensitivity to oxcarbazepine as an alternative strategy in clinical practice.
PubMed: 27730770
DOI: 10.3988/jcn.2017.13.1.47 -
Indian Journal of Pharmacology 2013Antiepileptic Drugs (AEDs) such as lamotrigine, gabapentin, and oxcarbazepine may have the potential to increase the risk of self-harm or suicidal behavior. We report a...
Antiepileptic Drugs (AEDs) such as lamotrigine, gabapentin, and oxcarbazepine may have the potential to increase the risk of self-harm or suicidal behavior. We report a case of pregabalin-induced self-inflicted multiple injuries on forearm after its continuous use. This is an interesting adverse drug reaction (ADR) that is rare, unusual, and potentially serious.
Topics: Adult; Humans; Male; Pregabalin; Self-Injurious Behavior; Young Adult; gamma-Aminobutyric Acid
PubMed: 24347781
DOI: 10.4103/0253-7613.121390 -
The Primary Care Companion For CNS... Dec 2018
Topics: Humans; Male; Mental Disorders; Oxcarbazepine; Psychotropic Drugs; Stevens-Johnson Syndrome; Young Adult
PubMed: 30605267
DOI: 10.4088/PCC.18l02304