Trial reportNeurology(R) neuroimmunology & neuroinflammation2024
Pharmacokinetics and Pharmacodynamics of Natalizumab 6-Week Dosing vs Continued 4-Week Dosing for Relapsing-Remitting Multiple Sclerosis.
Erratum issued Registry-linked trialAbstract readRandomized Controlled TrialClinical Trial, Phase IIIMulticenter Study
In one paragraph
Trial report in Neurology(R) neuroimmunology & neuroinflammation, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. It is linked to trial NCT03689972 (A Randomized, Controlled, Open-Label, Rater-Blinded, Phase 3b Study of the Efficacy, Safety, and Tolerability of 6-Week Extended Interval Dosing), which is not on this map. Cited by 7 papers.
0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
–field-weighted citation impact
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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
Who cites it
7 citing papers in PubMed.
- Digital signatures of fatigue and wearing-off symptoms in patients with multiple sclerosis under natalizumab.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2026Article
- Synergistic Regulation of Tumor Immunity by Integrins and Lectins: From Molecular Mechanisms to Dual-Targeted Therapy.International journal of molecular sciences · 2026Review
- The potential and therapeutic advances of the integrin family in neurological disorders.Neural regeneration research · 2026Article
- Biological and clinical stability after switching from intravenous to subcutaneous natalizumab in RRMS under standard and extended dosing.Frontiers in immunology · 2026Observational
- Annual 12-Week Dosing Gap of Natalizumab: Clinical Efficacy, Blood Biomarkers, and CSF Cell Composition.Annals of clinical and translational neurology · 2026Observational
- Genetics of progressive multifocal leukoencephalopathy: update on case reports with an inborn error of immunity and risk variants found in drug-linked cases.Frontiers in neurology · 2025Review
- Pharmacokinetics and Pharmacodynamics of Natalizumab 6-Week Dosing vs Continued 4-Week Dosing for Relapsing-Remitting Multiple Sclerosis.Neurology(R) neuroimmunology & neuroinflammation · 2025Article
Corrections and comments
- Erratum issued
Authors and funding
17 authors.
John F FoleyFrom the Rocky Mountain MS Clinic (J.F.F.), Salt Lake City, UT; Department of Neurology (G.D.), Centre Hospitalier Universitaire de Caen, France; Hackensack Meridian Medical Group - Neurology (L.Z.R.), Jersey Shore University Medical Center, Neptune City, NJ; Mellen MS Center (J.A.C.), Neurological Institute, Cleveland Clinic, OH; Montréal Neurological Institute (D.L.A.), McGill University; NeuroRx Research (D.L.A.), Montréal, Quebec, Canada; Department of Neuroscience (H.B.), Central Clinical School, Monash University, Melbourne, Victoria, Australia; University of Alabama at Birmingham (G.R.C.), School of Public Health; Blizard Institute (G.G.), Barts and The London School of Medicine and Dentistry; Queen Mary University of London (G.G.), United Kingdom; Department of Neurology (J.K.), Amsterdam University Medical Centers, Vrije Universiteit, Netherlands; Department of Neurology with Institute of Translational Neurology (H.W.), University of Münster, Germany; Biogen (K.L., L.D., M.T., K.F., J.S., T.L.), Cambridge, MA; and Ashfield MedComms (H.E.), Middletown, CT.
Gilles DeferFrom the Rocky Mountain MS Clinic (J.F.F.), Salt Lake City, UT; Department of Neurology (G.D.), Centre Hospitalier Universitaire de Caen, France; Hackensack Meridian Medical Group - Neurology (L.Z.R.), Jersey Shore University Medical Center, Neptune City, NJ; Mellen MS Center (J.A.C.), Neurological Institute, Cleveland Clinic, OH; Montréal Neurological Institute (D.L.A.), McGill University; NeuroRx Research (D.L.A.), Montréal, Quebec, Canada; Department of Neuroscience (H.B.), Central Clinical School, Monash University, Melbourne, Victoria, Australia; University of Alabama at Birmingham (G.R.C.), School of Public Health; Blizard Institute (G.G.), Barts and The London School of Medicine and Dentistry; Queen Mary University of London (G.G.), United Kingdom; Department of Neurology (J.K.), Amsterdam University Medical Centers, Vrije Universiteit, Netherlands; Department of Neurology with Institute of Translational Neurology (H.W.), University of Münster, Germany; Biogen (K.L., L.D., M.T., K.F., J.S., T.L.), Cambridge, MA; and Ashfield MedComms (H.E.), Middletown, CT.ORCID 0000-0003-1343-5858
Lana Zhovtis RyersonFrom the Rocky Mountain MS Clinic (J.F.F.), Salt Lake City, UT; Department of Neurology (G.D.), Centre Hospitalier Universitaire de Caen, France; Hackensack Meridian Medical Group - Neurology (L.Z.R.), Jersey Shore University Medical Center, Neptune City, NJ; Mellen MS Center (J.A.C.), Neurological Institute, Cleveland Clinic, OH; Montréal Neurological Institute (D.L.A.), McGill University; NeuroRx Research (D.L.A.), Montréal, Quebec, Canada; Department of Neuroscience (H.B.), Central Clinical School, Monash University, Melbourne, Victoria, Australia; University of Alabama at Birmingham (G.R.C.), School of Public Health; Blizard Institute (G.G.), Barts and The London School of Medicine and Dentistry; Queen Mary University of London (G.G.), United Kingdom; Department of Neurology (J.K.), Amsterdam University Medical Centers, Vrije Universiteit, Netherlands; Department of Neurology with Institute of Translational Neurology (H.W.), University of Münster, Germany; Biogen (K.L., L.D., M.T., K.F., J.S., T.L.), Cambridge, MA; and Ashfield MedComms (H.E.), Middletown, CT.
Jeffrey A CohenFrom the Rocky Mountain MS Clinic (J.F.F.), Salt Lake City, UT; Department of Neurology (G.D.), Centre Hospitalier Universitaire de Caen, France; Hackensack Meridian Medical Group - Neurology (L.Z.R.), Jersey Shore University Medical Center, Neptune City, NJ; Mellen MS Center (J.A.C.), Neurological Institute, Cleveland Clinic, OH; Montréal Neurological Institute (D.L.A.), McGill University; NeuroRx Research (D.L.A.), Montréal, Quebec, Canada; Department of Neuroscience (H.B.), Central Clinical School, Monash University, Melbourne, Victoria, Australia; University of Alabama at Birmingham (G.R.C.), School of Public Health; Blizard Institute (G.G.), Barts and The London School of Medicine and Dentistry; Queen Mary University of London (G.G.), United Kingdom; Department of Neurology (J.K.), Amsterdam University Medical Centers, Vrije Universiteit, Netherlands; Department of Neurology with Institute of Translational Neurology (H.W.), University of Münster, Germany; Biogen (K.L., L.D., M.T., K.F., J.S., T.L.), Cambridge, MA; and Ashfield MedComms (H.E.), Middletown, CT.ORCID 0000-0001-9245-9772
Douglas L ArnoldFrom the Rocky Mountain MS Clinic (J.F.F.), Salt Lake City, UT; Department of Neurology (G.D.), Centre Hospitalier Universitaire de Caen, France; Hackensack Meridian Medical Group - Neurology (L.Z.R.), Jersey Shore University Medical Center, Neptune City, NJ; Mellen MS Center (J.A.C.), Neurological Institute, Cleveland Clinic, OH; Montréal Neurological Institute (D.L.A.), McGill University; NeuroRx Research (D.L.A.), Montréal, Quebec, Canada; Department of Neuroscience (H.B.), Central Clinical School, Monash University, Melbourne, Victoria, Australia; University of Alabama at Birmingham (G.R.C.), School of Public Health; Blizard Institute (G.G.), Barts and The London School of Medicine and Dentistry; Queen Mary University of London (G.G.), United Kingdom; Department of Neurology (J.K.), Amsterdam University Medical Centers, Vrije Universiteit, Netherlands; Department of Neurology with Institute of Translational Neurology (H.W.), University of Münster, Germany; Biogen (K.L., L.D., M.T., K.F., J.S., T.L.), Cambridge, MA; and Ashfield MedComms (H.E.), Middletown, CT.ORCID 0000-0003-4266-0106
Helmut ButzkuevenFrom the Rocky Mountain MS Clinic (J.F.F.), Salt Lake City, UT; Department of Neurology (G.D.), Centre Hospitalier Universitaire de Caen, France; Hackensack Meridian Medical Group - Neurology (L.Z.R.), Jersey Shore University Medical Center, Neptune City, NJ; Mellen MS Center (J.A.C.), Neurological Institute, Cleveland Clinic, OH; Montréal Neurological Institute (D.L.A.), McGill University; NeuroRx Research (D.L.A.), Montréal, Quebec, Canada; Department of Neuroscience (H.B.), Central Clinical School, Monash University, Melbourne, Victoria, Australia; University of Alabama at Birmingham (G.R.C.), School of Public Health; Blizard Institute (G.G.), Barts and The London School of Medicine and Dentistry; Queen Mary University of London (G.G.), United Kingdom; Department of Neurology (J.K.), Amsterdam University Medical Centers, Vrije Universiteit, Netherlands; Department of Neurology with Institute of Translational Neurology (H.W.), University of Münster, Germany; Biogen (K.L., L.D., M.T., K.F., J.S., T.L.), Cambridge, MA; and Ashfield MedComms (H.E.), Middletown, CT.ORCID 0000-0003-3940-8727
Gary R CutterFrom the Rocky Mountain MS Clinic (J.F.F.), Salt Lake City, UT; Department of Neurology (G.D.), Centre Hospitalier Universitaire de Caen, France; Hackensack Meridian Medical Group - Neurology (L.Z.R.), Jersey Shore University Medical Center, Neptune City, NJ; Mellen MS Center (J.A.C.), Neurological Institute, Cleveland Clinic, OH; Montréal Neurological Institute (D.L.A.), McGill University; NeuroRx Research (D.L.A.), Montréal, Quebec, Canada; Department of Neuroscience (H.B.), Central Clinical School, Monash University, Melbourne, Victoria, Australia; University of Alabama at Birmingham (G.R.C.), School of Public Health; Blizard Institute (G.G.), Barts and The London School of Medicine and Dentistry; Queen Mary University of London (G.G.), United Kingdom; Department of Neurology (J.K.), Amsterdam University Medical Centers, Vrije Universiteit, Netherlands; Department of Neurology with Institute of Translational Neurology (H.W.), University of Münster, Germany; Biogen (K.L., L.D., M.T., K.F., J.S., T.L.), Cambridge, MA; and Ashfield MedComms (H.E.), Middletown, CT.ORCID 0000-0002-8455-980X
Gavin GiovannoniFrom the Rocky Mountain MS Clinic (J.F.F.), Salt Lake City, UT; Department of Neurology (G.D.), Centre Hospitalier Universitaire de Caen, France; Hackensack Meridian Medical Group - Neurology (L.Z.R.), Jersey Shore University Medical Center, Neptune City, NJ; Mellen MS Center (J.A.C.), Neurological Institute, Cleveland Clinic, OH; Montréal Neurological Institute (D.L.A.), McGill University; NeuroRx Research (D.L.A.), Montréal, Quebec, Canada; Department of Neuroscience (H.B.), Central Clinical School, Monash University, Melbourne, Victoria, Australia; University of Alabama at Birmingham (G.R.C.), School of Public Health; Blizard Institute (G.G.), Barts and The London School of Medicine and Dentistry; Queen Mary University of London (G.G.), United Kingdom; Department of Neurology (J.K.), Amsterdam University Medical Centers, Vrije Universiteit, Netherlands; Department of Neurology with Institute of Translational Neurology (H.W.), University of Münster, Germany; Biogen (K.L., L.D., M.T., K.F., J.S., T.L.), Cambridge, MA; and Ashfield MedComms (H.E.), Middletown, CT.ORCID 0000-0001-9995-1700
Joep KillesteinFrom the Rocky Mountain MS Clinic (J.F.F.), Salt Lake City, UT; Department of Neurology (G.D.), Centre Hospitalier Universitaire de Caen, France; Hackensack Meridian Medical Group - Neurology (L.Z.R.), Jersey Shore University Medical Center, Neptune City, NJ; Mellen MS Center (J.A.C.), Neurological Institute, Cleveland Clinic, OH; Montréal Neurological Institute (D.L.A.), McGill University; NeuroRx Research (D.L.A.), Montréal, Quebec, Canada; Department of Neuroscience (H.B.), Central Clinical School, Monash University, Melbourne, Victoria, Australia; University of Alabama at Birmingham (G.R.C.), School of Public Health; Blizard Institute (G.G.), Barts and The London School of Medicine and Dentistry; Queen Mary University of London (G.G.), United Kingdom; Department of Neurology (J.K.), Amsterdam University Medical Centers, Vrije Universiteit, Netherlands; Department of Neurology with Institute of Translational Neurology (H.W.), University of Münster, Germany; Biogen (K.L., L.D., M.T., K.F., J.S., T.L.), Cambridge, MA; and Ashfield MedComms (H.E.), Middletown, CT.ORCID 0000-0002-6347-5957
Heinz WiendlFrom the Rocky Mountain MS Clinic (J.F.F.), Salt Lake City, UT; Department of Neurology (G.D.), Centre Hospitalier Universitaire de Caen, France; Hackensack Meridian Medical Group - Neurology (L.Z.R.), Jersey Shore University Medical Center, Neptune City, NJ; Mellen MS Center (J.A.C.), Neurological Institute, Cleveland Clinic, OH; Montréal Neurological Institute (D.L.A.), McGill University; NeuroRx Research (D.L.A.), Montréal, Quebec, Canada; Department of Neuroscience (H.B.), Central Clinical School, Monash University, Melbourne, Victoria, Australia; University of Alabama at Birmingham (G.R.C.), School of Public Health; Blizard Institute (G.G.), Barts and The London School of Medicine and Dentistry; Queen Mary University of London (G.G.), United Kingdom; Department of Neurology (J.K.), Amsterdam University Medical Centers, Vrije Universiteit, Netherlands; Department of Neurology with Institute of Translational Neurology (H.W.), University of Münster, Germany; Biogen (K.L., L.D., M.T., K.F., J.S., T.L.), Cambridge, MA; and Ashfield MedComms (H.E.), Middletown, CT.ORCID 0000-0003-4310-3432
Kexuan LiFrom the Rocky Mountain MS Clinic (J.F.F.), Salt Lake City, UT; Department of Neurology (G.D.), Centre Hospitalier Universitaire de Caen, France; Hackensack Meridian Medical Group - Neurology (L.Z.R.), Jersey Shore University Medical Center, Neptune City, NJ; Mellen MS Center (J.A.C.), Neurological Institute, Cleveland Clinic, OH; Montréal Neurological Institute (D.L.A.), McGill University; NeuroRx Research (D.L.A.), Montréal, Quebec, Canada; Department of Neuroscience (H.B.), Central Clinical School, Monash University, Melbourne, Victoria, Australia; University of Alabama at Birmingham (G.R.C.), School of Public Health; Blizard Institute (G.G.), Barts and The London School of Medicine and Dentistry; Queen Mary University of London (G.G.), United Kingdom; Department of Neurology (J.K.), Amsterdam University Medical Centers, Vrije Universiteit, Netherlands; Department of Neurology with Institute of Translational Neurology (H.W.), University of Münster, Germany; Biogen (K.L., L.D., M.T., K.F., J.S., T.L.), Cambridge, MA; and Ashfield MedComms (H.E.), Middletown, CT.
Liesel DsilvaFrom the Rocky Mountain MS Clinic (J.F.F.), Salt Lake City, UT; Department of Neurology (G.D.), Centre Hospitalier Universitaire de Caen, France; Hackensack Meridian Medical Group - Neurology (L.Z.R.), Jersey Shore University Medical Center, Neptune City, NJ; Mellen MS Center (J.A.C.), Neurological Institute, Cleveland Clinic, OH; Montréal Neurological Institute (D.L.A.), McGill University; NeuroRx Research (D.L.A.), Montréal, Quebec, Canada; Department of Neuroscience (H.B.), Central Clinical School, Monash University, Melbourne, Victoria, Australia; University of Alabama at Birmingham (G.R.C.), School of Public Health; Blizard Institute (G.G.), Barts and The London School of Medicine and Dentistry; Queen Mary University of London (G.G.), United Kingdom; Department of Neurology (J.K.), Amsterdam University Medical Centers, Vrije Universiteit, Netherlands; Department of Neurology with Institute of Translational Neurology (H.W.), University of Münster, Germany; Biogen (K.L., L.D., M.T., K.F., J.S., T.L.), Cambridge, MA; and Ashfield MedComms (H.E.), Middletown, CT.
Marie ToukamFrom the Rocky Mountain MS Clinic (J.F.F.), Salt Lake City, UT; Department of Neurology (G.D.), Centre Hospitalier Universitaire de Caen, France; Hackensack Meridian Medical Group - Neurology (L.Z.R.), Jersey Shore University Medical Center, Neptune City, NJ; Mellen MS Center (J.A.C.), Neurological Institute, Cleveland Clinic, OH; Montréal Neurological Institute (D.L.A.), McGill University; NeuroRx Research (D.L.A.), Montréal, Quebec, Canada; Department of Neuroscience (H.B.), Central Clinical School, Monash University, Melbourne, Victoria, Australia; University of Alabama at Birmingham (G.R.C.), School of Public Health; Blizard Institute (G.G.), Barts and The London School of Medicine and Dentistry; Queen Mary University of London (G.G.), United Kingdom; Department of Neurology (J.K.), Amsterdam University Medical Centers, Vrije Universiteit, Netherlands; Department of Neurology with Institute of Translational Neurology (H.W.), University of Münster, Germany; Biogen (K.L., L.D., M.T., K.F., J.S., T.L.), Cambridge, MA; and Ashfield MedComms (H.E.), Middletown, CT.
Kyle FerberFrom the Rocky Mountain MS Clinic (J.F.F.), Salt Lake City, UT; Department of Neurology (G.D.), Centre Hospitalier Universitaire de Caen, France; Hackensack Meridian Medical Group - Neurology (L.Z.R.), Jersey Shore University Medical Center, Neptune City, NJ; Mellen MS Center (J.A.C.), Neurological Institute, Cleveland Clinic, OH; Montréal Neurological Institute (D.L.A.), McGill University; NeuroRx Research (D.L.A.), Montréal, Quebec, Canada; Department of Neuroscience (H.B.), Central Clinical School, Monash University, Melbourne, Victoria, Australia; University of Alabama at Birmingham (G.R.C.), School of Public Health; Blizard Institute (G.G.), Barts and The London School of Medicine and Dentistry; Queen Mary University of London (G.G.), United Kingdom; Department of Neurology (J.K.), Amsterdam University Medical Centers, Vrije Universiteit, Netherlands; Department of Neurology with Institute of Translational Neurology (H.W.), University of Münster, Germany; Biogen (K.L., L.D., M.T., K.F., J.S., T.L.), Cambridge, MA; and Ashfield MedComms (H.E.), Middletown, CT.
Jihee SohnFrom the Rocky Mountain MS Clinic (J.F.F.), Salt Lake City, UT; Department of Neurology (G.D.), Centre Hospitalier Universitaire de Caen, France; Hackensack Meridian Medical Group - Neurology (L.Z.R.), Jersey Shore University Medical Center, Neptune City, NJ; Mellen MS Center (J.A.C.), Neurological Institute, Cleveland Clinic, OH; Montréal Neurological Institute (D.L.A.), McGill University; NeuroRx Research (D.L.A.), Montréal, Quebec, Canada; Department of Neuroscience (H.B.), Central Clinical School, Monash University, Melbourne, Victoria, Australia; University of Alabama at Birmingham (G.R.C.), School of Public Health; Blizard Institute (G.G.), Barts and The London School of Medicine and Dentistry; Queen Mary University of London (G.G.), United Kingdom; Department of Neurology (J.K.), Amsterdam University Medical Centers, Vrije Universiteit, Netherlands; Department of Neurology with Institute of Translational Neurology (H.W.), University of Münster, Germany; Biogen (K.L., L.D., M.T., K.F., J.S., T.L.), Cambridge, MA; and Ashfield MedComms (H.E.), Middletown, CT.
Holly EngelmanFrom the Rocky Mountain MS Clinic (J.F.F.), Salt Lake City, UT; Department of Neurology (G.D.), Centre Hospitalier Universitaire de Caen, France; Hackensack Meridian Medical Group - Neurology (L.Z.R.), Jersey Shore University Medical Center, Neptune City, NJ; Mellen MS Center (J.A.C.), Neurological Institute, Cleveland Clinic, OH; Montréal Neurological Institute (D.L.A.), McGill University; NeuroRx Research (D.L.A.), Montréal, Quebec, Canada; Department of Neuroscience (H.B.), Central Clinical School, Monash University, Melbourne, Victoria, Australia; University of Alabama at Birmingham (G.R.C.), School of Public Health; Blizard Institute (G.G.), Barts and The London School of Medicine and Dentistry; Queen Mary University of London (G.G.), United Kingdom; Department of Neurology (J.K.), Amsterdam University Medical Centers, Vrije Universiteit, Netherlands; Department of Neurology with Institute of Translational Neurology (H.W.), University of Münster, Germany; Biogen (K.L., L.D., M.T., K.F., J.S., T.L.), Cambridge, MA; and Ashfield MedComms (H.E.), Middletown, CT.
Tyler LaskyFrom the Rocky Mountain MS Clinic (J.F.F.), Salt Lake City, UT; Department of Neurology (G.D.), Centre Hospitalier Universitaire de Caen, France; Hackensack Meridian Medical Group - Neurology (L.Z.R.), Jersey Shore University Medical Center, Neptune City, NJ; Mellen MS Center (J.A.C.), Neurological Institute, Cleveland Clinic, OH; Montréal Neurological Institute (D.L.A.), McGill University; NeuroRx Research (D.L.A.), Montréal, Quebec, Canada; Department of Neuroscience (H.B.), Central Clinical School, Monash University, Melbourne, Victoria, Australia; University of Alabama at Birmingham (G.R.C.), School of Public Health; Blizard Institute (G.G.), Barts and The London School of Medicine and Dentistry; Queen Mary University of London (G.G.), United Kingdom; Department of Neurology (J.K.), Amsterdam University Medical Centers, Vrije Universiteit, Netherlands; Department of Neurology with Institute of Translational Neurology (H.W.), University of Münster, Germany; Biogen (K.L., L.D., M.T., K.F., J.S., T.L.), Cambridge, MA; and Ashfield MedComms (H.E.), Middletown, CT.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
objectivesExposure to natalizumab, an efficacious treatment for relapsing-remitting multiple sclerosis (RRMS), is associated with increased risk of progressive multifocal leukoencephalopathy (PML). Compared with every-4-week (Q4W) dosing, extended-interval dosing of natalizumab is associated with decreased risk of PML. Clinical efficacy was maintained in the majority of patients switched to every-6-week (Q6W) dosing in the phase 3b NOVA clinical trial. In this article, we report pharmacokinetics (PK) and pharmacodynamics (PD) of Q6W vs Q4W dosing in NOVA.
methodsIn NOVA study Part 1, participants with RRMS (aged 18-60 years) and Expanded Disability Status Scale score <5.5, who were stable on IV natalizumab Q4W dosing for ≥12 months, were randomized to continue IV Q4W dosing or switched to IV Q6W dosing of natalizumab and followed for 72 weeks. Exploratory outcomes were measurements of trough serum natalizumab concentration, α4-integrin saturation, and soluble vascular cell adhesion molecule-1 (sVCAM-1) concentration. A mixed model of repeated measures was used to estimate mean treatment differences between groups. Patient-level PK and PD data were examined in those with relapse or radiologic disease activity.
resultsIn NOVA, 486 (Q6W, n = 245; Q4W, n = 241) and 487 (Q6W, n = 246; Q4W, n = 241) participants were included in the PK and PD populations, respectively. Mean trough natalizumab concentrations ranged from 10 to 21 μg/mL (Q6W) and 33-38 μg/mL (Q4W), and mean α4-integrin saturation remained above 65.5% (Q6W) and above 77.9% (Q4W). In the Q6W group, mean sVCAM-1 levels increased 23.6% by week 24 and remained elevated throughout the study, while mean sVCAM-1 levels remained generally stable in the Q4W group. Most participants with T2 lesion activity or relapse activity, in either treatment arm, maintained trough natalizumab levels >10 μg/mL and trough α4-integrin saturation >50%. DISCUSSION: Compared with Q4W dosing, Q6W dosing was associated with a 60%-70% decrease in mean trough natalizumab levels and a 9%-16% decrease in mean α4-integrin saturation. At the patient level, neither natalizumab concentration nor α4-integrin saturation was consistently predictive of lesion or relapse activity, suggesting that trough natalizumab and α4-integrin saturation measurements should be interpreted with caution in clinical practice. TRIAL REGISTRATION INFORMATION: ClinicalTrials.gov, NCT03689972; EudraCT, 2018-002145-11. Submitted 2018-09-27. First patient enrolled: 2018-12-26. https://clinicaltrials.gov/study/NCT03689972.
Indexed as
Immunologic FactorsMultiple Sclerosis, Relapsing-RemittingNatalizumabAdolescentAdultDrug Administration ScheduleFemaleHumansMaleMiddle AgedYoung AdultImmunologic FactorsNatalizumab
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NCT03689972ClinicalTrials.gov
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