Analysis of Lymphocyte Cell Surface Adhesion Marker Expression in Natalizumab Population With Active Control
The purpose of the study is to research the association between receiving Tysabri® (natalizumab), interferon beta-1a, glatiramer acetate or not having any treatment for your MS and how it may or may not impact certain white blood cells and other immunological markers. This information may be useful in identifying risk factors in developing progressive multifocal leukoencephalopathy (PML). It does appear that the risk increases with the total number of natalizumab infusions. Patients who have not yet started a disease modifying therapy or who have been on one other than natalizumab are needed as controls to see how these biomarkers change.
Patients at various stages of natalizumab treatment as well as natalizumab naïve are needed to allow for analysis of the change in potential markers over time.
|Study Design:||Observational Model: Cohort|
|Official Title:||Analysis of Lymphocyte Cell Surface Adhesion Marker Expression in a Natalizumab Treated Population With Active Control Assessment|
- Quantitative Assessment of CD62L in MS Patients on Immunomodulatory Agents [ Time Frame: 12 Months ] [ Designated as safety issue: No ]
Biospecimen Retention: Samples Without DNA
|Study Start Date:||July 2012|
|Study Completion Date:||April 2013|
|Primary Completion Date:||March 2013 (Final data collection date for primary outcome measure)|
Group A TX Naive
Patient decided to start disease modifying treatment, either interferon beta-1a, glatiramer acetate or natalizumab. If interested and consented they would be assigned to Group A. Patient would have blood specimens taken up to 5 times over the next 19 months: Day 0; Day 28; Day 84: Day 336 and Day 508.
Group B TY 4-12 doses
Patient is currently prescribed and is taking natalizumab, has 4 to 12 doses. If interested patient could be consented and assigned to Group B. Patients will have their blood drawn Day 0; and around the time of the patient's 18th dose.
Group C 18 plus TY
Patient currently or close to being at 18 doses or 18 plus doses of natalizumab. If interested patient consented and assigned to Group C. Patient will have their blood drawn once: Day 0.
Group D Other DMT 18 plus
Patient is close to or currently at 18 doses or more of interferon beta-1a or glatiramer acetate. If interested patient consented and assigned to Group D. Patient will have their blood drawn once: Day 0.
Group E - Non-MS
10 participants without Multiple Sclerosis or other immunological illness. If interested participants consented and assigned to Group E. Participants will have their blood drawn once: Day 0.
Patients at various timepoints in their MS treatment or who are beginning certain MS treatments will be consented and have blood specimens collected to allow for an immunological comparison. The decision to treat with disease modifying therapies is made independently from this observational study.
Primary endpoint: To further understand the delineation of lymphocyte cell adhesion marker down regulation within a treatment naïve patient population and at various stages of treatment.
Secondary endpoint: To understand the correlation between natalizumab pharmacodynamics, pharmacokinetics and lymphocyte cell adhesion marker down regulation.
The results of various biomarkers and immunological testing (including CD62L, LFA-1, sCD62L, sLFA-1, sVCAM, VLA-4 saturation, IgG4, CBC with absolute differential) will be compared amongst the groups consented. The treatment naive group will be compared longitudinally.
|United States, Utah|
|Rocky Mountain MS Clinic|
|Salt Lake City, Utah, United States, 84103|
|Principal Investigator:||John F Foley, MD||Rocky Mountain MS Research Group, LLC|