Does Memantine Improve Verbal Memory Task Performance in Subjects With Partial Epilepsy and Memory Dysfunction?
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| ClinicalTrials.gov Identifier: NCT01054599 |
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Recruitment Status :
Completed
First Posted : January 22, 2010
Results First Posted : July 11, 2017
Last Update Posted : July 11, 2017
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Many patients with epilepsy have memory deficits in the setting of otherwise normal intelligence. Unfortunately, the treatment options for memory dysfunction in patients with epilepsy are limited. The investigators are conducting a study to evaluate the effects of memantine for the treatment of verbal memory dysfunction in subjects with localization-related seizures. The study involves randomization to memantine therapy or placebo, with cognitive testing and EEG pre- and post-treatment, as well as after an open-label memantine treatment phase.
The primary aim of this study is to evaluate the efficacy of memantine for the treatment of verbal memory dysfunction in subjects with left temporal lobe epilepsy. The investigators expect that verbal memory task performance will improve in those taking memantine, but not in those taking a placebo.
The investigators propose that the expected benefit of memantine is specific to verbal memory in subjects with left temporal lobe seizures, rather than representing an overall improvement in cognitive function. The investigators expect no improvement on other cognitive tasks in either the memantine or placebo groups.
The investigators will evaluate whether subjects with left temporal lobe epilepsy and memory difficulties have self-reported improvement in memory while taking memantine. The investigators expect improvement of self-rated memory function on the Quality of Life in Epilepsy Patient Inventory (QOLIE-89) in the memantine group, but no change on this scale in the placebo group.
| Condition or disease | Intervention/treatment | Phase |
|---|---|---|
| Epilepsy | Drug: Memantine Other: Sugar Pill | Not Applicable |
Show Detailed Description
| Study Type : | Interventional (Clinical Trial) |
| Actual Enrollment : | 29 participants |
| Allocation: | Randomized |
| Intervention Model: | Parallel Assignment |
| Masking: | Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor) |
| Primary Purpose: | Treatment |
| Official Title: | Does Memantine Improve Verbal Memory Task Performance in Subjects With Localization-related Epilepsy and Memory Dysfunction? A Randomized, Double-Blind, Placebo-Controlled Trial |
| Study Start Date : | January 2009 |
| Actual Primary Completion Date : | May 2014 |
| Actual Study Completion Date : | May 2014 |
| Arm | Intervention/treatment |
|---|---|
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Experimental: Memantine
Subjects will randomly assigned to take either a placebo or memantine for 13 weeks. The assignment will be double-blind, neither the study members nor the subject will know if he/she is taking memantine or a placebo.
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Drug: Memantine
All subjects in the treatment group will be placed on memantine. The dosage of memantine will begin at 5mg once per day (qday), and increase by 5mg every week. The titration will continue over a period of 3 weeks until a goal of 10mg bid is reached. The dosing will increase slowly, to minimize the risk of side effects. The subject will then remain on memantine at 10mg bid for 10 weeks, until the conclusion of the first phase of the study. At the conclusion of the first 13 weeks, subjects will discontinue the treatment (memantine or placebo) and enter the open label phase.
Other Name: Namenda Drug: Memantine Open label: When the blinded phase is complete (Weeks 1-13), all subjects will receive open-label treatment with memantine (Weeks 14-26). The dosage of memantine will begin at 5mg once per day (qday), and increase by 5mg every week. The titration will continue over a period of 3 weeks until a goal of 10mg bid is reached. The dosing will increase slowly, to minimize the risk of side effects. The subject will then remain on memantine at 10mg bid for 10 weeks, until the conclusion of the study. At the conclusion of the study, subjects will discontinue the treatment.
Other Name: Namenda |
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Placebo Comparator: Sugar Pill
Subjects will be randomly assigned to take either memantine or a placebo. The study is double-blind, and neither the study members nor the subject will know if he/she is taking memantine or a placebo.
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Other: Sugar Pill
In the control arm of the study, subjects will take one placebo sugar pill per day for one week, then increase to one tablet twice per day for the following 12 weeks. At the end of this phase of the study, subjects will enter the open-label phase (unblinded treatment with memantine).
Other Name: Placebo |
- The Change Scores in Memory Measures From Baseline to Post-treatment/Placebo Will be Compared Between the Memantine Treatment and Placebo Groups. [ Time Frame: 13 weeks ]Change scores from pre- to post-treatment/placebo were calculated for the primary outcome measures, the Selective Reminding Test Continuous Long-Term Retrieval (range 0-72; higher scores indicate better memory) and 7-24 Spatial Recall Test Total Learning (range 0-35; total correct across 5 learning trials are summed, with higher scores indicating better memory) scores. These measures are scores on a scale, rather than representing standard units.
- To Test the Hypothesis That Improvement Will be Selective for Verbal Memory, Change Scores on the Non-verbal Tasks Will be Compared Between the Placebo and Memantine Treatment Groups. [ Time Frame: 5 years ]
- To Test the Hypothesis That Treatment With Memantine Will Result in Subjective Improvement of Memory Function, the Change Scores From the QOLIE-89 Will be Evaluated. [ Time Frame: 5 years ]
- A Secondary Analysis Will Examine the Possible Sustained Benefit of Continued Memantine Use. [ Time Frame: 26 weeks ]SRT-CLTR (range 0-72; higher scores indicate better memory), and 7-24 Spatial Memory Test (range 0-35; scores are summed across the 5 learning trials, with higher scores indicating better memory) scores will be assessed across the first (baseline) and third (post-open label memantine) testing sessions. These measures are considered to be scores on a scale, rather than standard units. The hypothesis was that subjects randomized to memantine would demonstrate sustained improvement from baseline, while the placebo group would demonstrate improvements after taking open label memantine (compared to baseline).
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| Ages Eligible for Study: | 18 Years to 65 Years (Adult, Older Adult) |
| Sexes Eligible for Study: | All |
| Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- 18-65 years of age
- Normal IQ as estimated by the Wechsler Test of Adult Reading (WTAR)
- Able to give consent
- Able to live independently and complete activities of daily living
- Stable frequency of seizures. There is no minimum/maximum criteria for the frequency of partial seizures. Those with infrequent secondary generalized seizures may participate, with infrequent seizures defined as two or fewer per year.
- The subject's treating physician does not believe a change in anticonvulsant regimen to be warranted. The anticonvulsant drugs must remain unchanged during the 26 week trial.
- Partial-onset seizures. Seizure type will be determined by clinical history, MRI, SPECT and/or PET imaging, and interictal and/or ictal EEG.
- Either symptomatic or idiopathic seizures.
Exclusion Criteria:
- Non-epileptic seizures
- Prior surgical resection for treatment of seizures
- Progressive neurologic illness (i.e. tumor evident on MRI)
- Current alcohol or drug abuse, as this may affect memory by other mechanisms. This information may be obtained by self-report, from the referring physician or by medical record.
- Diagnosis of Alzheimer's disease, nutritional deficiency, infection or metabolic/electrolyte disorder causing memory loss.
- Non-native English speaking and/or multilingual.
- Seizure(s) must not have occurred within 3 days of testing.
- Subjects who are pregnant will not be eligible to take part in the study, as memantine is classified as a Pregnancy Category B drug and may pose risk to the fetus.
- Women who are breastfeeding may not participate in this study.
- Those with renal tubular acidosis or infections of the urinary tract will not be eligible for participation, as memantine is renally cleared and conditions that alkalinize the urine may reduce clearance of the drug.
- Subjects with severe renal impairment, defined as a creatinine clearance of ≤29 mL/min, will be excluded as such patients may not tolerate the proposed dosing schedule.
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01054599
| United States, Georgia | |
| Emory University | |
| Atlanta, Georgia, United States, 30322 | |
| United States, Massachusetts | |
| Massachusetts General Hospital | |
| Boston, Massachusetts, United States, 02114 | |
| Newton-Wellesley Hospital | |
| Newton, Massachusetts, United States, 02462 | |
| Principal Investigator: | Lauren Moo, M.D. | Massachusetts General Hospital |
Publications:
| Responsible Party: | Beth Leeman, M.D., Assistant in Neuroscience, Massachusetts General Hospital |
| ClinicalTrials.gov Identifier: | NCT01054599 History of Changes |
| Other Study ID Numbers: |
2008P000107 |
| First Posted: | January 22, 2010 Key Record Dates |
| Results First Posted: | July 11, 2017 |
| Last Update Posted: | July 11, 2017 |
| Last Verified: | June 2017 |
Keywords provided by Beth Leeman, M.D., Massachusetts General Hospital:
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epilepsy memory memantine localization related epilepsy focal epilepsy |
Additional relevant MeSH terms:
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Epilepsy Epilepsies, Partial Brain Diseases Central Nervous System Diseases Nervous System Diseases Memantine Antiparkinson Agents |
Anti-Dyskinesia Agents Dopamine Agents Neurotransmitter Agents Molecular Mechanisms of Pharmacological Action Physiological Effects of Drugs Excitatory Amino Acid Antagonists Excitatory Amino Acid Agents |