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Vaccination Response in Tecfidera-Treated Versus Interferon-Treated Participants With Relapsing Forms of Multiple Sclerosis.

An Open-Label Study to Assess the Immune Response to Vaccination in Tecfidera® (BG00012)-Treated Versus Interferon-Treated Subjects With Relapsing Forms of Multiple Sclerosis.

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02097849
Enrollment
71
Registered
2014-03-27
Start date
2015-02-28
Completion date
2016-05-02
Last updated
2017-06-02

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Relapsing Forms of Multiple Sclerosis

Keywords

vaccine, pneumococcal, meningococcal, tetanus diphtheria, immune response

Brief summary

Primary objective is to evaluate the immune response to vaccination with tetanus diphtheria toxoids vaccine (Td) in participants with relapsing forms of Multiple Sclerosis (MS) who have been treated with Tecfidera (BG00012) versus those treated with non pegylated interferon (IFN). Secondary objective is to evaluate the immune response to vaccination with 23-valent pneumococcal polysaccharide vaccine (PPSV23) \[a mostly T cell-independent humoral response\] and meningococcal polysaccharide diphtheria conjugate vaccine, quadrivalent (MCV4) \[T cell-dependent neoantigen response\].

Interventions

DRUGdimethyl fumarate

Throughout the study participants will remain on their existing, stable dosing regimen of Tecfidera.

BIOLOGICALtetanus diphtheria toxoids vaccine

Administered as described in the treatment arm

Administered as described in the treatment arm

BIOLOGICALmeningococcal polysaccharide diphtheria conjugate vaccine (quadrivalent)

Administered as described in the treatment arm

DRUGnon-pegylated interferon

Throughout the study participants will remain on their existing, stable dosing regimen of non-pegylated IFN.

Sponsors

Biogen
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 55 Years
Healthy volunteers
No

Inclusion criteria

Key Inclusion Criteria: * Must have a confirmed diagnosis of relapsing remitting MS per the 2010 McDonald criteria. * Must have a known tetanus immunization history with most recent tetanus vaccination given 2 to 15 years prior to Screening and an anti-tetanus serum immunoglobulin titer at Screening that is less than or equal to one-half the upper limit of detection for the assay. * Must have been on a stable approved dose of Tecfidera (240 mg twice daily \[BID\]) \[Group 1\] for ≥6 months or on a stable approved dose of a non-pegylated IFN (e.g., Avonex, Betaseron, Rebif, Extavia) \[Group 2\] for ≥3 months prior to Day 1. Key

Exclusion criteria

* Clinical relapse requiring treatment within 30 days prior to Day 1. * Pneumococcal vaccination within 5 years prior to Screening. * Previous exposure to meningococcal vaccines. * Known hypersensitivity to Td, PPSV23, or MCV4 or their components. NOTE: Other protocol-defined inclusion/

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Tetanus Responders (≥ 2-Fold Rise) at Day 28 Compared to Prevaccination LevelUp to Week 4 (Day 28) postvaccinationPercentage of participants with a ≥ 2-fold rise in anti-tetanus serum immunoglobulin G (IgG) levels (responders) from prevaccination to 4 weeks after Td vaccination.

Secondary

MeasureTime frameDescription
Percentage of Pneumococcal Serotype 3 (≥ 2-Fold Rise) Responders Compared to Prevaccination LevelUp to Week 4 (Day 28) postvaccinationPercentage of participants with a ≥ 2-fold rise in anti-pneumococcal serum IgG levels against serotype 3 from prevaccination to 4 weeks (28 days) after PPSV23 vaccination.
Percentage of Pneumococcal Serotype 3 (≥ 4-Fold Rise) Responders Compared to Prevaccination LevelUp to Week 4 (Day 28) postvaccinationPercentage of participants with a ≥ 4-fold rise in anti-pneumococcal serum IgG levels against serotype 3 from prevaccination to 4 weeks (28 days) after PPSV23 vaccination.
Percentage of Pneumococcal Serotype 8 (≥ 2-Fold Rise) Responders Compared to Prevaccination LevelUp to Week 4 (Day 28) postvaccinationPercentage of participants with a ≥ 2-fold rise in anti-pneumococcal serum IgG levels against serotype 8 from prevaccination to 4 weeks (28 days) after PPSV23 vaccination.
Percentage of Pneumococcal Serotype 8 (≥ 4-Fold Rise) Responders Compared to Prevaccination LevelUp to Week 4 (Day 28) postvaccinationPercentage of participants with a ≥ 4-fold rise in anti-pneumococcal serum IgG levels against serotype 8 from prevaccination to 4 weeks (28 days) after PPSV23 vaccination.
Percentage of Meningococcal Serogroup C Responders (≥ 2-Fold Rise) Compared to Prevaccination LevelUp to Week 4 (Day 28) postvaccinationPercentage of participants with a ≥ 2-fold rise in anti-meningococcal serum IgG levels against serotype C from prevaccination to 4 weeks after MCV4 vaccination.
Percentage of Meningococcal Serogroup C Responders (≥ 4-Fold Rise) Compared to Prevaccination LevelUp to Week 4 (Day 28) postvaccinationPercentage of participants with a ≥ 4-fold rise in anti-meningococcal serum IgG levels against serotype C from prevaccination to 4 weeks after MCV4 vaccination.
Ratio of Serum Tetanus Level at Day 28 to PrevaccinationUp to Week 4 (Day 28) postvaccinationMedian serum titer ratios from prevaccination to 4 weeks after Td vaccination.
Percentage of Tetanus Responders (≥ 4-Fold Rise) at Day 28 Compared to Prevaccination LevelUp to Week 4 (Day 28) postvaccinationPercentage of participants with a ≥ 4-fold rise in anti-tetanus serum IgG levels (responders) from prevaccination to 4 weeks after Td vaccination.
Ratio of Serum Pneumococcal Antibodies (Serotype 8) Level at Day 28 to PrevaccinationUp to Week 4 (Day 28) postvaccinationMedian serum titer ratios from prevaccination to 4 weeks after PPSV23 vaccination.
Ratio of Serum Meningococcal Antibodies (Serogroup C) Level at Day 28 to PrevaccinationUp to Week 4 (Day 28) postvaccinationMedian serum titer ratios from prevaccination to 4 weeks after MCV4 vaccination.
Number of Participants Experiencing Vaccination-Emergent Adverse Events (AEs) and Serious AEsDay 1 to Week 4An AE was any untoward medical occurrence that did not necessarily have a causal relationship with this treatment. A serious AE was any untoward medical occurrence that at any dose: resulted in death; was life-threatening; required inpatient hospitalization or prolongation of existing hospitalization; resulted in persistent or significant disability/incapacity; resulted in a congenital anomaly/birth defect; any other medically important event that, in the opinion of the Investigator, could have jeopardized the participant or required intervention to prevent one of the other outcomes listed in the definition above.
Number of Participants With Shifts From Baseline in HematologyScreening to Week 4Shift to low includes normal to low, high to low, and unknown to low. Shift to high includes normal to high, low to high, and unknown to high.
Number of Participants With Shifts From Baseline in Blood ChemistryScreening to Week 4Shift to low includes normal to low, high to low, and unknown to low. Shift to high includes normal to high, low to high, and unknown to high.
Number of Participants With Abnormalities in Vital SignsScreening to Week 4Temperature increase: \> 38 celcius (C) or ≥ 1 C increase from baseline. Pulse increase: \> 120 beats per minute (bpm) or \> 20 bpm increase from baseline. Pulse decrease: \< 50 bpm or \> 20 bpm decrease from baseline. Systolic blood pressure (SBP) increase: \> 180 millimeters of mercury (mmHg) or \> 40 mmHg from baseline. SBP decrease: \< 90 mmHg or \> 30 mmHg decrease from baseline. Diastolic blood pressure (DBP) increase: \> 105 mmHg or \> 30 mmHg increase from baseline. DBP decrease: \< 50 mmHg or \> 20 mmHg decrease from baseline.
Ratio of Serum Pneumococcal Antibodies (Serotype 3) Level at Day 28 to PrevaccinationUp to Week 4 (Day 28) postvaccinationMedian serum titer ratios from prevaccination to 4 weeks after PPSV23 vaccination.

Countries

United States

Participant flow

Participants by arm

ArmCount
Non-Pegylated IFN Treated Plus Vaccinations
Participants on a stable approved dose of a non pegylated IFN for ≥ 3 months received 3 vaccinations on Day 1 intramuscularly in the specified order: Td 0.5 mL; PPSV23 0.5 mL; MCV4 0.5 mL.
33
Tecfidera Treated Plus Vaccinations
Participants on a stable approved dose of Tecfidera (240 mg BID) for ≥ 6 months received 3 vaccinations on Day 1 intramuscularly in the specified order: Td 0.5 mL; PPSV23 0.5 mL; MCV4 0.5 mL.
38
Total71

Baseline characteristics

CharacteristicNon-Pegylated IFN Treated Plus VaccinationsTecfidera Treated Plus VaccinationsTotal
Age, Continuous44.7 years
STANDARD_DEVIATION 7.77
45.9 years
STANDARD_DEVIATION 6.1
45.3 years
STANDARD_DEVIATION 6.91
Sex: Female, Male
Female
27 Participants34 Participants61 Participants
Sex: Female, Male
Male
6 Participants4 Participants10 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
14 / 3311 / 38
serious
Total, serious adverse events
0 / 330 / 38

Outcome results

Primary

Percentage of Tetanus Responders (≥ 2-Fold Rise) at Day 28 Compared to Prevaccination Level

Percentage of participants with a ≥ 2-fold rise in anti-tetanus serum immunoglobulin G (IgG) levels (responders) from prevaccination to 4 weeks after Td vaccination.

Time frame: Up to Week 4 (Day 28) postvaccination

ArmMeasureValue (NUMBER)
Non-Pegylated IFN Treated Plus VaccinationsPercentage of Tetanus Responders (≥ 2-Fold Rise) at Day 28 Compared to Prevaccination Level73 percentage of participants
Tecfidera Treated Plus VaccinationsPercentage of Tetanus Responders (≥ 2-Fold Rise) at Day 28 Compared to Prevaccination Level68 percentage of participants
p-value: 0.69295% CI: [-0.27, 0.19]Clopper-Pearson Exact
Secondary

Number of Participants Experiencing Vaccination-Emergent Adverse Events (AEs) and Serious AEs

An AE was any untoward medical occurrence that did not necessarily have a causal relationship with this treatment. A serious AE was any untoward medical occurrence that at any dose: resulted in death; was life-threatening; required inpatient hospitalization or prolongation of existing hospitalization; resulted in persistent or significant disability/incapacity; resulted in a congenital anomaly/birth defect; any other medically important event that, in the opinion of the Investigator, could have jeopardized the participant or required intervention to prevent one of the other outcomes listed in the definition above.

Time frame: Day 1 to Week 4

Population: Participants who received at least one vaccination.

ArmMeasureGroupValue (NUMBER)
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants Experiencing Vaccination-Emergent Adverse Events (AEs) and Serious AEsAny Event18 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants Experiencing Vaccination-Emergent Adverse Events (AEs) and Serious AEsModerate or Severe Event9 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants Experiencing Vaccination-Emergent Adverse Events (AEs) and Serious AEsSevere Event2 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants Experiencing Vaccination-Emergent Adverse Events (AEs) and Serious AEsEvent Related to Existing Therapy3 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants Experiencing Vaccination-Emergent Adverse Events (AEs) and Serious AEsSerious Event0 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants Experiencing Vaccination-Emergent Adverse Events (AEs) and Serious AEsSerious Event Related to Existing Therapy0 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants Experiencing Vaccination-Emergent Adverse Events (AEs) and Serious AEsSerious Event Related to Td Vaccine0 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants Experiencing Vaccination-Emergent Adverse Events (AEs) and Serious AEsSerious Event Related to PPSV23 Vaccine0 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants Experiencing Vaccination-Emergent Adverse Events (AEs) and Serious AEsSerious Event Related to MCV4 Vaccine0 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants Experiencing Vaccination-Emergent Adverse Events (AEs) and Serious AEsWithdrew From Study Due to an Event0 participants
Tecfidera Treated Plus VaccinationsNumber of Participants Experiencing Vaccination-Emergent Adverse Events (AEs) and Serious AEsSerious Event Related to PPSV23 Vaccine0 participants
Tecfidera Treated Plus VaccinationsNumber of Participants Experiencing Vaccination-Emergent Adverse Events (AEs) and Serious AEsAny Event16 participants
Tecfidera Treated Plus VaccinationsNumber of Participants Experiencing Vaccination-Emergent Adverse Events (AEs) and Serious AEsSerious Event Related to Existing Therapy0 participants
Tecfidera Treated Plus VaccinationsNumber of Participants Experiencing Vaccination-Emergent Adverse Events (AEs) and Serious AEsModerate or Severe Event7 participants
Tecfidera Treated Plus VaccinationsNumber of Participants Experiencing Vaccination-Emergent Adverse Events (AEs) and Serious AEsWithdrew From Study Due to an Event0 participants
Tecfidera Treated Plus VaccinationsNumber of Participants Experiencing Vaccination-Emergent Adverse Events (AEs) and Serious AEsSevere Event0 participants
Tecfidera Treated Plus VaccinationsNumber of Participants Experiencing Vaccination-Emergent Adverse Events (AEs) and Serious AEsSerious Event Related to Td Vaccine0 participants
Tecfidera Treated Plus VaccinationsNumber of Participants Experiencing Vaccination-Emergent Adverse Events (AEs) and Serious AEsEvent Related to Existing Therapy3 participants
Tecfidera Treated Plus VaccinationsNumber of Participants Experiencing Vaccination-Emergent Adverse Events (AEs) and Serious AEsSerious Event Related to MCV4 Vaccine0 participants
Tecfidera Treated Plus VaccinationsNumber of Participants Experiencing Vaccination-Emergent Adverse Events (AEs) and Serious AEsSerious Event0 participants
Secondary

Number of Participants With Abnormalities in Vital Signs

Temperature increase: \> 38 celcius (C) or ≥ 1 C increase from baseline. Pulse increase: \> 120 beats per minute (bpm) or \> 20 bpm increase from baseline. Pulse decrease: \< 50 bpm or \> 20 bpm decrease from baseline. Systolic blood pressure (SBP) increase: \> 180 millimeters of mercury (mmHg) or \> 40 mmHg from baseline. SBP decrease: \< 90 mmHg or \> 30 mmHg decrease from baseline. Diastolic blood pressure (DBP) increase: \> 105 mmHg or \> 30 mmHg increase from baseline. DBP decrease: \< 50 mmHg or \> 20 mmHg decrease from baseline.

Time frame: Screening to Week 4

Population: Participants who had a baseline assessment and at least one postbaseline assessment.

ArmMeasureGroupValue (NUMBER)
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Abnormalities in Vital SignsPulse Decrease0 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Abnormalities in Vital SignsSBP Decrease0 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Abnormalities in Vital SignsPulse Increase1 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Abnormalities in Vital SignsDBP Increase0 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Abnormalities in Vital SignsSBP Increase1 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Abnormalities in Vital SignsDBP Decrease0 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Abnormalities in Vital SignsTemperature Increase0 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Abnormalities in Vital SignsDBP Decrease0 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Abnormalities in Vital SignsTemperature Increase0 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Abnormalities in Vital SignsPulse Increase1 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Abnormalities in Vital SignsPulse Decrease0 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Abnormalities in Vital SignsSBP Increase0 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Abnormalities in Vital SignsSBP Decrease0 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Abnormalities in Vital SignsDBP Increase1 participants
Secondary

Number of Participants With Shifts From Baseline in Blood Chemistry

Shift to low includes normal to low, high to low, and unknown to low. Shift to high includes normal to high, low to high, and unknown to high.

Time frame: Screening to Week 4

Population: n=participants whose baseline value was not low (or high) and who had at least one postbaseline value.

ArmMeasureGroupValue (NUMBER)
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryTotal Bilirubin: Shift to Low; n=32, 370 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryBlood Urea Nitrogen: Shift to High; n=33, 381 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryAspartate Aminotransferase: Shift to High; n=33,361 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryCreatinine: Shift to Low; n=33, 380 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryTotal Bilirubin: Shift to High; n=33, 380 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryCreatinine: Shift to High; n=33, 370 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryAlanine Aminotransferase: Shift to High; n=30, 352 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistrySodium: Shift to Low; n=33, 380 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryGamma-glutamyl Transferase: Shift to Low; n=33, 380 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistrySodium: Shift to High; n=33, 380 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryAlanine Aminotransferase: Shift to Low; n=33, 380 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryPotassium: Shift to Low; n=33, 380 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryGamma-glutamyl Transferase: Shift to High; n=33,380 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryPotassium: Shift to High; n=33, 380 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryAspartate Aminotransferase: Shift to Low; n=33, 370 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryChloride: Shift to Low; n=33, 381 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryChloride: Shift to High; n=33, 380 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryBlood Urea Nitrogen: Shift to Low; n=33, 380 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryChloride: Shift to High; n=33, 380 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryAspartate Aminotransferase: Shift to High; n=33,360 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryChloride: Shift to Low; n=33, 380 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryAlanine Aminotransferase: Shift to Low; n=33, 380 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryAlanine Aminotransferase: Shift to High; n=30, 351 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryTotal Bilirubin: Shift to Low; n=32, 371 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryTotal Bilirubin: Shift to High; n=33, 380 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryGamma-glutamyl Transferase: Shift to Low; n=33, 380 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryGamma-glutamyl Transferase: Shift to High; n=33,380 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryBlood Urea Nitrogen: Shift to Low; n=33, 380 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryBlood Urea Nitrogen: Shift to High; n=33, 381 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryCreatinine: Shift to Low; n=33, 380 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryCreatinine: Shift to High; n=33, 370 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistrySodium: Shift to Low; n=33, 380 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistrySodium: Shift to High; n=33, 380 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryPotassium: Shift to Low; n=33, 380 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryPotassium: Shift to High; n=33, 380 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in Blood ChemistryAspartate Aminotransferase: Shift to Low; n=33, 370 participants
Secondary

Number of Participants With Shifts From Baseline in Hematology

Shift to low includes normal to low, high to low, and unknown to low. Shift to high includes normal to high, low to high, and unknown to high.

Time frame: Screening to Week 4

Population: n=participants whose baseline value was not low (or high) and who had at least one postbaseline value.

ArmMeasureGroupValue (NUMBER)
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyMonocytes: Shift to Low; n=33, 380 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyHemoglobin: Shift to Low; n=28, 361 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyHemoglobin: Shift to High; n=32, 380 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyHematocrit: Shift to Low; n=31, 372 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyHematocrit: Shift to High; n=32, 380 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyRed Blood Cell Count: Shift to Low; n=25, 321 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyRed Blood Cell Count: Shift to High; n=33, 370 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyWhite Blood Cell Count: Shift to Low; n=27, 302 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyWhite Blood Cell Count: Shift to High; n=33, 382 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyNeutrophils: Shift to Low; n=27, 343 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyNeutrophils: Shift to High; n=33, 372 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyBasophils: Shift to Low; n=33, 380 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyBasophils: Shift to High; n=33, 380 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyMonocytes: Shift to High; n=33, 382 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyLymphocytes: Shift to Low; n=33, 224 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyLymphocytes: Shift to High; n=33, 380 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyEosinophils: Shift to Low; n=33, 380 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyEosinophils: Shift to High; n=33, 380 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyPlatelet Count: Shift to Low; n=31, 381 participants
Non-Pegylated IFN Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyPlatelet Count: Shift to High; n=32, 370 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyEosinophils: Shift to High; n=33, 380 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyMonocytes: Shift to Low; n=33, 382 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyNeutrophils: Shift to High; n=33, 370 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyHemoglobin: Shift to Low; n=28, 360 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyLymphocytes: Shift to High; n=33, 380 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyHemoglobin: Shift to High; n=32, 380 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyBasophils: Shift to Low; n=33, 380 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyHematocrit: Shift to Low; n=31, 371 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyPlatelet Count: Shift to High; n=32, 370 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyHematocrit: Shift to High; n=32, 380 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyBasophils: Shift to High; n=33, 380 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyRed Blood Cell Count: Shift to Low; n=25, 324 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyEosinophils: Shift to Low; n=33, 380 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyRed Blood Cell Count: Shift to High; n=33, 370 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyMonocytes: Shift to High; n=33, 380 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyWhite Blood Cell Count: Shift to Low; n=27, 304 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyPlatelet Count: Shift to Low; n=31, 380 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyWhite Blood Cell Count: Shift to High; n=33, 380 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyLymphocytes: Shift to Low; n=33, 221 participants
Tecfidera Treated Plus VaccinationsNumber of Participants With Shifts From Baseline in HematologyNeutrophils: Shift to Low; n=27, 342 participants
Secondary

Percentage of Meningococcal Serogroup C Responders (≥ 2-Fold Rise) Compared to Prevaccination Level

Percentage of participants with a ≥ 2-fold rise in anti-meningococcal serum IgG levels against serotype C from prevaccination to 4 weeks after MCV4 vaccination.

Time frame: Up to Week 4 (Day 28) postvaccination

Population: One participant in the IFN group did not have an assessment.

ArmMeasureValue (NUMBER)
Non-Pegylated IFN Treated Plus VaccinationsPercentage of Meningococcal Serogroup C Responders (≥ 2-Fold Rise) Compared to Prevaccination Level53 percentage of participants
Tecfidera Treated Plus VaccinationsPercentage of Meningococcal Serogroup C Responders (≥ 2-Fold Rise) Compared to Prevaccination Level53 percentage of participants
p-value: 0.96795% CI: [-0.24, 0.23]Clopper-Pearson Exact
Secondary

Percentage of Meningococcal Serogroup C Responders (≥ 4-Fold Rise) Compared to Prevaccination Level

Percentage of participants with a ≥ 4-fold rise in anti-meningococcal serum IgG levels against serotype C from prevaccination to 4 weeks after MCV4 vaccination.

Time frame: Up to Week 4 (Day 28) postvaccination

Population: One participant in the IFN group did not have an assessment.

ArmMeasureValue (NUMBER)
Non-Pegylated IFN Treated Plus VaccinationsPercentage of Meningococcal Serogroup C Responders (≥ 4-Fold Rise) Compared to Prevaccination Level38 percentage of participants
Tecfidera Treated Plus VaccinationsPercentage of Meningococcal Serogroup C Responders (≥ 4-Fold Rise) Compared to Prevaccination Level37 percentage of participants
p-value: 0.95595% CI: [-0.24, 0.22]Clopper-Pearson Exact
Secondary

Percentage of Pneumococcal Serotype 3 (≥ 2-Fold Rise) Responders Compared to Prevaccination Level

Percentage of participants with a ≥ 2-fold rise in anti-pneumococcal serum IgG levels against serotype 3 from prevaccination to 4 weeks (28 days) after PPSV23 vaccination.

Time frame: Up to Week 4 (Day 28) postvaccination

ArmMeasureValue (NUMBER)
Non-Pegylated IFN Treated Plus VaccinationsPercentage of Pneumococcal Serotype 3 (≥ 2-Fold Rise) Responders Compared to Prevaccination Level79 percentage of participants
Tecfidera Treated Plus VaccinationsPercentage of Pneumococcal Serotype 3 (≥ 2-Fold Rise) Responders Compared to Prevaccination Level66 percentage of participants
p-value: 0.22595% CI: [-0.35, 0.1]Clopper-Pearson Exact
Secondary

Percentage of Pneumococcal Serotype 3 (≥ 4-Fold Rise) Responders Compared to Prevaccination Level

Percentage of participants with a ≥ 4-fold rise in anti-pneumococcal serum IgG levels against serotype 3 from prevaccination to 4 weeks (28 days) after PPSV23 vaccination.

Time frame: Up to Week 4 (Day 28) postvaccination

ArmMeasureValue (NUMBER)
Non-Pegylated IFN Treated Plus VaccinationsPercentage of Pneumococcal Serotype 3 (≥ 4-Fold Rise) Responders Compared to Prevaccination Level70 percentage of participants
Tecfidera Treated Plus VaccinationsPercentage of Pneumococcal Serotype 3 (≥ 4-Fold Rise) Responders Compared to Prevaccination Level47 percentage of participants
p-value: 0.05795% CI: [-0.44, 0.01]Clopper-Pearson Exact
Secondary

Percentage of Pneumococcal Serotype 8 (≥ 2-Fold Rise) Responders Compared to Prevaccination Level

Percentage of participants with a ≥ 2-fold rise in anti-pneumococcal serum IgG levels against serotype 8 from prevaccination to 4 weeks (28 days) after PPSV23 vaccination.

Time frame: Up to Week 4 (Day 28) postvaccination

ArmMeasureValue (NUMBER)
Non-Pegylated IFN Treated Plus VaccinationsPercentage of Pneumococcal Serotype 8 (≥ 2-Fold Rise) Responders Compared to Prevaccination Level88 percentage of participants
Tecfidera Treated Plus VaccinationsPercentage of Pneumococcal Serotype 8 (≥ 2-Fold Rise) Responders Compared to Prevaccination Level95 percentage of participants
p-value: 0.395% CI: [-0.16, 0.3]Clopper-Pearson Exact
Secondary

Percentage of Pneumococcal Serotype 8 (≥ 4-Fold Rise) Responders Compared to Prevaccination Level

Percentage of participants with a ≥ 4-fold rise in anti-pneumococcal serum IgG levels against serotype 8 from prevaccination to 4 weeks (28 days) after PPSV23 vaccination.

Time frame: Up to Week 4 (Day 28) postvaccination

ArmMeasureValue (NUMBER)
Non-Pegylated IFN Treated Plus VaccinationsPercentage of Pneumococcal Serotype 8 (≥ 4-Fold Rise) Responders Compared to Prevaccination Level85 percentage of participants
Tecfidera Treated Plus VaccinationsPercentage of Pneumococcal Serotype 8 (≥ 4-Fold Rise) Responders Compared to Prevaccination Level82 percentage of participants
p-value: 0.71495% CI: [-0.26, 0.2]Clopper-Pearson Exact
Secondary

Percentage of Tetanus Responders (≥ 4-Fold Rise) at Day 28 Compared to Prevaccination Level

Percentage of participants with a ≥ 4-fold rise in anti-tetanus serum IgG levels (responders) from prevaccination to 4 weeks after Td vaccination.

Time frame: Up to Week 4 (Day 28) postvaccination

ArmMeasureValue (NUMBER)
Non-Pegylated IFN Treated Plus VaccinationsPercentage of Tetanus Responders (≥ 4-Fold Rise) at Day 28 Compared to Prevaccination Level61 percentage of participants
Tecfidera Treated Plus VaccinationsPercentage of Tetanus Responders (≥ 4-Fold Rise) at Day 28 Compared to Prevaccination Level42 percentage of participants
Comparison: Responders at Day 28p-value: 0.1295% CI: [-0.41, 0.05]Clopper-Pearson Exact
Secondary

Ratio of Serum Meningococcal Antibodies (Serogroup C) Level at Day 28 to Prevaccination

Median serum titer ratios from prevaccination to 4 weeks after MCV4 vaccination.

Time frame: Up to Week 4 (Day 28) postvaccination

Population: One participant in the IFN group did not have an assessment.

ArmMeasureValue (MEDIAN)
Non-Pegylated IFN Treated Plus VaccinationsRatio of Serum Meningococcal Antibodies (Serogroup C) Level at Day 28 to Prevaccination3.300 ratio
Tecfidera Treated Plus VaccinationsRatio of Serum Meningococcal Antibodies (Serogroup C) Level at Day 28 to Prevaccination3.408 ratio
Secondary

Ratio of Serum Pneumococcal Antibodies (Serotype 3) Level at Day 28 to Prevaccination

Median serum titer ratios from prevaccination to 4 weeks after PPSV23 vaccination.

Time frame: Up to Week 4 (Day 28) postvaccination

ArmMeasureValue (MEDIAN)
Non-Pegylated IFN Treated Plus VaccinationsRatio of Serum Pneumococcal Antibodies (Serotype 3) Level at Day 28 to Prevaccination9.667 ratio
Tecfidera Treated Plus VaccinationsRatio of Serum Pneumococcal Antibodies (Serotype 3) Level at Day 28 to Prevaccination4.741 ratio
Secondary

Ratio of Serum Pneumococcal Antibodies (Serotype 8) Level at Day 28 to Prevaccination

Median serum titer ratios from prevaccination to 4 weeks after PPSV23 vaccination.

Time frame: Up to Week 4 (Day 28) postvaccination

ArmMeasureValue (MEDIAN)
Non-Pegylated IFN Treated Plus VaccinationsRatio of Serum Pneumococcal Antibodies (Serotype 8) Level at Day 28 to Prevaccination27.000 ratio
Tecfidera Treated Plus VaccinationsRatio of Serum Pneumococcal Antibodies (Serotype 8) Level at Day 28 to Prevaccination13.845 ratio
Secondary

Ratio of Serum Tetanus Level at Day 28 to Prevaccination

Median serum titer ratios from prevaccination to 4 weeks after Td vaccination.

Time frame: Up to Week 4 (Day 28) postvaccination

ArmMeasureValue (MEDIAN)
Non-Pegylated IFN Treated Plus VaccinationsRatio of Serum Tetanus Level at Day 28 to Prevaccination6.128 ratio
Tecfidera Treated Plus VaccinationsRatio of Serum Tetanus Level at Day 28 to Prevaccination4.463 ratio

Source: ClinicalTrials.gov · Data processed: Feb 25, 2026