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WEUSKOP6166: Lamotrigine and Aseptic Meningitis

WEUSKOP6166: Prevalence of Aseptic Meningitis Among Lamotrigine Users

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT01657864
Enrollment
1
Registered
2012-08-06
Start date
2012-05-31
Completion date
2012-07-31
Last updated
2012-08-06

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

Conditions

Epilepsy

Keywords

Aseptic Meningitis, Epidemiology, Bipolar Disorder, Lamotrigine, Epilepsy

Brief summary

The objective of the study is to quantify the number of cases of aseptic meningitis among users of Lamotrigine. This study is a cross-sectional study design using data on lamotrigine patients within the Thomson Reuters MarketScan® Commercial database (MarketScan database). The MarketScan database is a US-based insurance claims database representative of a US insured population and includes supplemental datao n Medicare patients. This cross-sectional study will evaluate the number of cases of aseptic meningitis among lamotrigine users during the duration of lamotrigine therapy, with an extended exposure window of 30 days after completing therapy. The MarketScan® Database is an US insurance claims database that is held in-house at GSK, which can be interrogated to examine rates of prescribing and medical conditions that can be captured via ICD-9 diagnoses codes. The MarketScan database captures person-specific clinical utilization, expenditures, and enrollment across inpatient, outpatient, prescription drug, and carve-out services from a selection of large employers, health plans, and government and public organizations. The annual medical databases include private sector health data from approximately 100 payers. In 2011, there were approximately 35 million patients on the database. The Commercial Claims and Encounters Database represents the medical experience of insured employees and their dependents for active employees, early retirees, COBRA continues, and their dependents insured by employer-sponsored plans (i.e., non-Medicare eligibles). In addition, a linked Medstat Medicare database contains predominantly fee-for-service plan data in insurance plans where both the Medicare-paid amounts and the employer-paid amounts were available and evident on the claims.The data are HIPAA compliant thus all patients have been anonymized.

Interventions

DRUGLamotrigine

Lamotrigine is an anticonvulsant drug used in the treatment of epilepsy and bipolar disorder

Sponsors

GlaxoSmithKline
Lead SponsorINDUSTRY

Study design

Time perspective
CROSS_SECTIONAL

Eligibility

Sex/Gender
ALL
Healthy volunteers
No

Inclusion criteria

* Patients must be using lamotrigine for epilepsy or bipolar disorder. * Patients must have at least 180 days history on the database prior to the index of lamotrigine use. * Patients must have medical and pharmacy coverage throughout the study, with no gaps in eligibility.

Exclusion criteria

* None

Design outcomes

Primary

MeasureTime frameDescription
Aseptic meningitis during the period of time the patient is taking lamotrigineThe period at-risk for aseptic meningitis shall begin with the date of the new prescription for lamotrigine and will end 30 days after the last dose of the drugThe exposure window will be extended by 30 days to be consistent with current pharmacovigilance polices at GSK. Aseptic meningitis coded within this window shall be included in the rate

Outcome results

None listed

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