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Completed Phase 3 Interventional Results available

A Study to Evaluate Efficacy, Safety, and Tolerability of EID of Natalizumab (BG00002) in Participants With RRMS Switching From Treatment With Natalizumab SID in Relation to Continued SID Treatment- Followed by Extension Study Comprising SC and IV Natalizumab Administration

ClinicalTrials.gov ID: NCT03689972

Public ClinicalTrials.gov record NCT03689972. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Sep 5, 2026, 9:20 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A Randomized, Controlled, Open-Label, Rater-Blinded, Phase 3b Study of the Efficacy, Safety, and Tolerability of 6-Week Extended Interval Dosing (EID) of Natalizumab (BG00002) in Subjects With Relapsing-Remitting Multiple Sclerosis Switching From Treatment With 4-Week Natalizumab Standard Interval Dosing (SID) in Relation to Continued SID Treatment - Followed by an Open-Label Crossover Extension Study Comprising Subcutaneous and Intravenous Natalizumab Administration

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

Part 1: The primary objective is to evaluate the efficacy of natalizumab extended interval dosing (EID) (every 6 weeks \[Q6W\]) in participants who have previously been treated with natalizumab standard interval dosing (SID) (every 4 weeks \[Q4W\]) for at least 12 months, in relation to continued Q4W treatment. The secondary objectives is to evaluate relapse-based clinical efficacy measures, disability worsening, additional Magnetic resonance imaging (MRI)-lesion efficacy measures and safety of Q6W in participants who have previously been treated with natalizumab Q4W for at least 12 months, in relation to continued Q4W treatment. Part 2: The primary objective is to evaluate participant preference for subcutaneous (SC) versus intravenous (IV) route of natalizumab administration. The secondary objectives is to evaluate treatment satisfaction, drug preparation and administration time, safety and immunogenicity, efficacy and characterize pharmacokinetic (PK) and pharmacodynamic (PD) drug preparation and administration time of SC versus IV routes of natalizumab administration.

Study identification

NCT ID
NCT03689972
Recruitment status
Completed
Study type
Interventional
Phase
Phase 3
Lead sponsor
Biogen
Industry
Enrollment
585 participants

Conditions and interventions

Eligibility (public fields only)

Age range
18 Years to 60 Years
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Nov 26, 2018
Primary completion
Jan 30, 2023
Completion
Jul 23, 2023
Last update posted
Jun 11, 2024

2018 – 2023

United States locations

U.S. sites
52
U.S. states
26
U.S. cities
48
Facility City State ZIP Site status
North Central Neurology Associates, P.C. Cullman Alabama 35058
Alabama Neurology Associates Homewood Alabama 35209
UCI MIND Irvine California 92607
UC San Diego Movement Disorder Center La Jolla California 92037
MS Center of California Laguna Hills California 92653
Stanford Hospital and Clinics Palo Alto California 94304
University of Colorado Hospital Anschutz Outpatient Pavillion Aurora Colorado 80010-0510
Advanced Neurosciences Research Fort Collins Colorado 80528
Yale University Fairfield Connecticut 06824
Georgetown University Hospital-Medstar Washington D.C. District of Columbia 20007-2113
University of Miami Miller School of Medicine Miami Florida 33125
Infinity Clinical Research, LLC Sunrise Florida 33351
University of South Florida Tampa Florida 33612
Shepherd Center, Inc. Atlanta Georgia 30309
Atlanta Neuroscience Institute Atlanta Georgia 30327
NorthShore University HealthSystem Evanston Illinois 60201
Northwestern University Evanston Illinois 60208
College Park Family Care Center Overland Park Kansas 66212
Lahey Clinic Inc. - PARENT ACCOUNT Burlington Massachusetts 01805
Neurology Center of New England P.C. Foxborough Massachusetts 02035
Beth Israel Deaconess Medical Center, Inc. Jamaica Plain Massachusetts 02130-2075
Dragonfly Research, LLC Wellesley Massachusetts 02481
South Shore Neurology Associates Weymouth Massachusetts 02190
Michigan Institute for Neurological Disorders Farmington Hills Michigan 48334
Michigan State University Grand Rapids Michigan 49506
Memorial Healthcare Owosso Michigan 48867
Minneapolis Clinic of Neurology Golden Valley Minnesota 55422
Washington University, School of Medicine St Louis Missouri 63110
Cleveland Clinic Lou Ruvo Center for Brain Health Las Vegas Nevada 89106
RWJ Barnabas Health Newark New Jersey 07102
Holy Name Medical Center Teaneck New Jersey 07666
NYU Langone Clinical Cancer Center New York New York 10016
Mount Sinai Medical Center New York New York 10029
Columbia University Hervert Irving Comprehensive Cancer Center New York New York 10032
Island Neurological Associates, P.C. Plainview New York 11803
Raleigh Neurology Associates Raleigh North Carolina 27607-6010
Wake Forest University Health Sciences Winston-Salem North Carolina 27157
University of Cincinnati Cincinnati Ohio 45267
The Cleveland Clinic Foundation Cleveland Ohio 44195
OhioHealth Riverside Methodist Hospital Columbus Ohio 43214
Dayton Center for Neurological Disorders Dayton Ohio 45459
Providence Neurological Specialties Portland Oregon 97225
Thomas Jefferson University Philadelphia Pennsylvania 19107
Magee-Womens Hospital of UPMC Pittsburgh Pennsylvania 15213
Sibyl Wray, MD Neurology, PC Knoxville Tennessee 37922
Vanderbilt University Medical Center Nashville Tennessee 37215
Central Texas Neurology Consultants Round Rock Texas 78681
Rocky Mountain MS Research Group LLC Salt Lake City Utah 84103
University Of Virginia Charlottesville Virginia 22908
Multiple Sclerosis Center of Greater Washington Vienna Virginia 22182
Virginia Mason Medical Center Seattle Washington 98101
Wheaton Franciscan Healthcare Milwaukee Wisconsin 53227

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

Non-U.S. locations

This page focuses on the U.S. directory. The official record also lists 55 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT03689972, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Jun 11, 2024 · Synced Sep 5, 2026

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Open the official record

The complete protocol, eligibility criteria, and contact information for NCT03689972 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →