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Memantine for the Treatment of Cognitive Impairment in Systemic Lupus Erythematosus (ClearMEMory)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details. Identifier: NCT03527472
Recruitment Status : Recruiting
First Posted : May 17, 2018
Last Update Posted : September 25, 2018
Kleberg Foundation
Information provided by (Responsible Party):
Leslie Crofford, Vanderbilt University Medical Center

Brief Summary:
A phenome-wide association study (PheWAS) identified an association between a variant in the human gene for the N2A subunit of the N-methyl-D-aspartate (NMDA) receptor, GRIN2A, and Systemic Lupus Erythematosus (SLE). A single nucleotide polymorphism (SNP) in this gene encodes for increased NMDA receptor activity. Based on the potential function of the associated SNP and published literature, alterations in SNP function signaling may underlie a cluster of symptoms. The objective of this study is to evaluate the safety, tolerability and efficacy of memantine, an NMDA receptor antagonist, in a precise patient subset with SLE. Participants will complete a full 14-week clinical trial, receiving either memantine or a placebo. Participants' blood will be drawn to test for various antibodies as well as organ function. Patients' urine will also be collected to assess organ function and pregnancy for females at a number of specific time points. The overall goal is to develop a safe and inexpensive therapeutic approach to reduce debilitating cognitive symptoms in a precisely selected SLE sub-population.

Condition or disease Intervention/treatment Phase
Lupus Erythematosus, Systemic Drug: Memantine Drug: Placebo Phase 2

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Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 144 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Intervention Model Description: Double-blind, randomized, placebo-controlled
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: A Randomized Placebo-controlled, Double Blind Phase 2 Clinical Trial of Memantine for the Treatment of Cognitive Impairment in Systemic Lupus Erythematosus
Actual Study Start Date : August 23, 2018
Estimated Primary Completion Date : October 2022
Estimated Study Completion Date : December 2022

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Lupus

Arm Intervention/treatment
Experimental: Memantine
At randomization, subjects will receive 5 mg twice per day for one week. They will escalate their dose to 10 mg twice per day for one week, then 10 mg in the morning and 20 mg at night for one week, and finally 20 mg twice per day for three weeks. Maximum tolerated will be determined at this time and this dose will be continued for an additional six weeks.
Drug: Memantine
Memantine is an FDA-approved drug for the treatment of Alzheimer's disease.
Other Name: Namenda

Placebo Comparator: Placebo
At randomization, subjects will receive one matching placebo capsule twice per day for one week. They will also take one matching placebo capsule twice per day for the next week (week 2), then one matching placebo capsule in the morning and two capsules at night for one week (week three), and finally two capsules twice per day for three weeks (weeks 4-6). Maximum tolerated number of capsules will be determined at this time and this dose will be continued for an additional six weeks.
Drug: Placebo
The placebo will match the study drug in appearance, dose, and frequency. It will not contain any active drug (memantine).

Primary Outcome Measures :
  1. Repeatable Battery for Assessment of Neuropsychological Status (RBANS) Total Index Score at endpoint (Visit 4) [ Time Frame: 12 weeks ]
    RBANS is a widely used psychiatric tool that objectively measures cognitive impairment. It is comprised of 12 subtests and takes approximately 30 minutes. For scoring, the RBANS index scores are converted to classifications including Very Superior (130 and above), Superior (120-129), High Average (110-119), Average (90-109), Low Average (80-89), Borderline (70-79), and Extremely Low (69 and below). A score of Extremely Low equates to severe cognitive impairment. The primary outcome measure will be analyzed using ANCOVA controlling for memantine/placebo, baseline RBANS, sex, age, and NMDAR status.

Secondary Outcome Measures :
  1. Incidence of Treatment-Emergent Adverse Events [ Time Frame: 12 weeks ]
    We will determine the safety of memantine as measured by treatment-emergent adverse events.

  2. Polysymptomatic Distress Scale [ Time Frame: 12 weeks ]
    The Polysymptomatic Distress (PSD) scale measures the effect of PSD over a range of pain-related clinical symptoms. The scale was derived from variables used in the 2010 American College of Rheumatology fibromyalgia criteria, modified for use in clinical research, and broadened to be applicable for patients not meeting fibromyalgia diagnostic criteria. The PSD score is calculated by summing two components, the Widespread Pain Index (WPI) and Symptom Severity Scale (SSS). The WPI is a count of painful nonarticular body regions, and the SSS is a symptom severity measure that includes fatigue, sleep, and cognitive problems.

  3. Beck Depression Inventory [ Time Frame: 12 weeks ]
    The Beck Depression Inventory (BDI) is a 21-item, self-report inventory that measures depression symptoms and attitudes. It takes approximately 10 minutes to complete and requires a fifth to sixth grade reading level to adequately comprehend the questions.

  4. Hospital Anxiety and Depression Scale [ Time Frame: 12 weeks ]
    The Hospital Anxiety and Depression Scale (HADS) is a self-assessment scale and was developed to detect states of depression, anxiety, and emotional distress among patients who were being treated for a variety of clinical problems. The scale has a total of 14 items, with responses being scored on a scale of 0-3 (3 indicates higher symptom frequencies). Scores for each subscale (anxiety and depression) range from 0 to 21, categorized as follows: normal 0-7, mild 8-10, moderate 11-14, and severe 15-21.

  5. Systemic Lupus Erythematosus Disease Activity Index (SLEDAI)-2K [ Time Frame: 12 weeks ]
    SLEDAI-2K is an updated version of the SLEDAI which was originally developed in 1985 as a clinical index to assess lupus disease activity in the preceding 10 days. It is a cumulative and weighted index of 24 different clinical and laboratory variables/disease descriptors, comprising 9 organ systems. The Investigator will assess disease descriptors on the SLEDAI-2K collection sheet (e.g., arthritis, myositis, alopecia, rash, mucosal ulcers, etc.).

  6. Patient Global Impression of Change [ Time Frame: Endpoint (Visit 4) ]
    Participants will answer the standard question, "Considering all the ways your health affects you, how are you doing since the beginning of your treatment?" Answers include very much worse, much worse, worse, unchanged, improved, much improved, and very much improved.

  7. RBANS Subscales [ Time Frame: 12 weeks ]
    Our primary outcome is the RBANS Total Index Score, which is the sum of several subscales/tests. For a secondary outcome, we will look at each subscale/test individually to see if there is a trend for any one test in particular. The subscales are all scored the same (40 - 160) and include immediate memory, delayed memory, visuospatial/constructional, language, and attention.

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   18 Years to 60 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  1. Meet American College of Rheumatology (ACR) criteria for SLE
  2. Report NPSLE symptoms on the screening survey recommended by EULAR guideline but limited to the psychiatric manifestations questions
  3. Score ≤ 85 on the RBANS total index (≤ 1 SD below the normative mean of 100)

Exclusion Criteria:

  1. Male and female subjects <18 or >60 years
  2. Change in medication that may affect mood or cognition including prednisone, antidepressant medications, or stimulants within the last 4 weeks
  3. Regular (daily) use of opioids or other drugs of abuse including heavy alcohol or marijuana use
  4. Metabolic derangement defined as liver function tests >3x upper limit of normal or severe renal disease defined as calculated creatinine clearance <30 mL
  5. Severe psychiatric disease including schizophrenia, psychosis, suicidal depression
  6. Other factors which in the opinion of the investigator could potentially impact the study outcomes (e.g., underlying disease, medications, history)* or prevent the participant from completing the protocol (poor compliance or unpredictable schedule)
  7. Inability or refusal to give informed consent for any reason including a diagnosis of dementia or significant cognitive impairment**
  8. Patients who are pregnant
  9. Patients who are enrolled in other investigational drug studies

Information from the National Library of Medicine

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 identifier (NCT number): NCT03527472

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Contact: Jonathan M Williams, PhD 6158759200
Contact: Jana K Shirey-Rice, PhD 6153227022

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United States, Tennessee
Vanderbilt University Medical Center Recruiting
Nashville, Tennessee, United States, 37232
Contact: Jon Williams, PhD    615-875-9200   
Sponsors and Collaborators
Vanderbilt University Medical Center
Kleberg Foundation
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Principal Investigator: Leslie J Crofford, MD Professor of Medicine - Rheumatology

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Responsible Party: Leslie Crofford, Professor of Medicine, Vanderbilt University Medical Center Identifier: NCT03527472     History of Changes
Other Study ID Numbers: 180256
First Posted: May 17, 2018    Key Record Dates
Last Update Posted: September 25, 2018
Last Verified: September 2018
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: Undecided

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Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No
Product Manufactured in and Exported from the U.S.: Yes

Keywords provided by Leslie Crofford, Vanderbilt University Medical Center:
cognitive dysfunction

Additional relevant MeSH terms:
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Lupus Erythematosus, Systemic
Cognitive Dysfunction
Cognition Disorders
Neurocognitive Disorders
Mental Disorders
Connective Tissue Diseases
Autoimmune Diseases
Immune System Diseases
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