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Exploring the Immune Response to SARS-CoV-2 modRNA Vaccines in Patients With Secondary Progressive Multiple Sclerosis (AMA-VACC)

An Open-label Multicenter Study to Assess Response to SARS-CoV-2 modRNA Vaccines in Participants With Secondary Progressive Multiple Sclerosis Treated With Mayzent (Siponimod)

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04792567
Acronym
AMA-VACC
Enrollment
41
Registered
2021-03-11
Start date
2021-04-19
Completion date
2022-08-15
Last updated
2024-06-20

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

Conditions

Secondary Progressive Multiple Sclerosis

Keywords

COVID-19, SARS-CoV-2 mRNA vaccine, Siponimod, Secondary Progressive Multiple Sclerosis, SPMS, adult, MS

Brief summary

The purpose of this study was to understand whether participants could mount an immune response to SARS-CoV-2 modRNA vaccines administered either during continuous siponimod treatment or during a treatment break versus while on treatment with first-line DMTS or no current MS treatment..

Detailed description

This was a three cohort, multicenter, open-label, study of 60 planned (optionally up to 90) multiple sclerosis (MS) patients who were on treatment with siponimod or a first-line disease modifying therapy (DMT) or without MS treatment planning to undergo a SARS-CoV-2 modRNA vaccination as part of clinical routine. * The first cohort enrolled participants who did not interrupt their siponimod therapy for the purpose of a SARS-CoV-2 modRNA vaccination. * The second cohort enrolled participants who interrupted their siponimod therapy for the purpose of a SARS-CoV-2 modRNA vaccination for approximately 2-3 months * The third cohort enrollled participants who received modRNA vaccination while on treatment with the following first-line DMTs (dimethylfumarate, glatirameracetate, interferons, teriflunomide) or no current treatment in clinical routine. The study consists of a screening period, vaccination period and investigational period. During the screening period of up to one month eligibility and SARS-CoV-2 antibodies at baseline were assessed. The 3-4 week vaccination period started with first dose of modRNA vaccine on Day 1 and ended with second dose of modRNA vaccine 3-4 weeks after first dose depending on EU SmPC. The investigational period lasted 12 months, during which blood samples for primary and secondary endpoint analyses were drawn at 1 week (Visit 1), 1 Month (Visit 2) and 6 months (Visit 3) after completion of vaccination (i.e. second dose of vaccine). 12 months after completion of vaccination a COVID-19 follow-up call was scheduled. As patients were treated according to clinical routine, the start of treatment was defined as the date the informed consent was signed. Booster vaccinations were allowed as per local regulations, physician's discretion and as part of clinical routine. This booster may have been any type of SARS-CoV2 vaccine and introduction of a treatment break for the purpose of booster vaccination was at the discretion of the treating physician or patient for all three cohorts. In case of booster vaccinations an additional blood sample was collected 1 month after the booster vaccination (booster Visit). The planned study duration for each participant was 56-64 weeks, depending on the length of the screening period. The study investigated the development of functional anti-SARS-CoV-2 antibodies and T-cell titers for six months after the participants' vaccination.

Interventions

DRUGBAF312

taken orally once per day (dose depends on CYP2C9 genotype)

DRUGBaseline disease modifying therapies (DMTs)

DMTs: Dimethylfumarate, glatirameracetate, interferon, teriflunomode according to respective SmPC

BIOLOGICALBNT162

Administerd according to the respective EU SmPC at the discretion of the treating physician independent of AMA-VACC. If suggested by local regulations and performed as part of clinical routine any type of booster/refresher vaccination (e.g. mRNA, vector, peptide) was allowed in this study.

BIOLOGICALmRNA-1273

Administerd according to the respective EU SmPC at the discretion of the treating physician independent of AMA-VACC. If suggested by local regulations and performed as part of clinical routine any type of booster/refresher vaccination (e.g. mRNA, vector, peptide) was allowed in this study

Sponsors

Novartis Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 100 Years
Healthy volunteers
No

Inclusion criteria

* Secondary Progressive Multiple Sclerosis (SPMS) diagnosis or with Relapsing Remitting Multiple Sclerosis (RRMS) at risk to develop SPMS (at the discretion of the treating physician) * on stable MS treatment (Siponimod, dimethylfumarate, glatirameracetate, interferon, teriflunomode) or no current treatment * no recent treatment changes

Exclusion criteria

* prior or current COVID-19 disease * SARS-CoV-2 antibodies at screening Other protocol-defined inclusion/

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Participants Achieving Seroconversion One Week After Receiving Second Vaccine (EAS)At 1 week after vaccination period (defined as 1 week after second dose of vaccine)Participants who had detectable SARS-CoV-2 serum functional antibodies one week after second dose of vaccine.

Secondary

MeasureTime frameDescription
SARS-CoV-2 Functional Antibodies (% Inhibition) by Visits (SAF/EAS)Baseline; Week 1, Month 1 and Month 6 after second dose of vaccine; 1 month after booster (up to Month 12 after second dose of vaccine)Measurement of antibody-mediated blockage (i.e. presence of functional SARS-CoV-2 antibodies) was performed to quantify functional SARS-CoV-2 neutralizing antibodies and was calculated as % inhibition to the in-assay control.
Number of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASBaseline; Week 1, Month 1 and Month 6 after second dose of vaccine; 1 month after booster (up to Month 12 after second dose of vaccine)The release of IFNg or IL-2 after stimulation with a SARS-CoV-2/PAN corona peptide-mix measured by enzyme-linked immunosorbent spot (ELIspot) assay from peripheral blood mononuclear cells indicates the presence of SARS-CoV-2 reactive T-cells, i.e. a T-cell response.

Countries

Germany

Participant flow

Pre-assignment details

All participants screened were enrolled, there were no screen failures.

Participants by arm

ArmCount
Siponimod - Continuous
Continuous treatment with siponimod (oral, daily, dose depending on CYP2C9 genotype: 2mg or 1 mg) during SARS-CoV-2 mRNA vaccination
17
Siponimod- Interrupted
Siponimod (oral, daily, dose depending on CYP2C9 genotype: 2mg or 1 mg) with treatment interruption (for approx. 2-3 months) for the purpose of a SARS-CoV-2 mRNA vaccination
4
DMT or no MS Treatment
Baseline disease modifying treatments (DMTs) or no multiple sclerosis treatment during SARS-CoV-2 mRNA vaccination
20
Total41

Baseline characteristics

CharacteristicSiponimod- InterruptedTotalSiponimod - ContinuousDMT or no MS Treatment
Age, Continuous55.8 years
STANDARD_DEVIATION 2.2
51.8 years
STANDARD_DEVIATION 10.2
54.6 years
STANDARD_DEVIATION 5.8
48.6 years
STANDARD_DEVIATION 12.9
Multiple sclerosis diagnosis
Active RRMS (with acute exacerbation or progression)
0 Participants1 Participants0 Participants1 Participants
Multiple sclerosis diagnosis
Active SPMS (with acute exacerbation or progression)
3 Participants6 Participants3 Participants0 Participants
Multiple sclerosis diagnosis
MS Multiple sclerosis, not specified
0 Participants6 Participants0 Participants6 Participants
Multiple sclerosis diagnosis
RRMS Relapsing remitting multiple sclerosis
0 Participants11 Participants0 Participants11 Participants
Multiple sclerosis diagnosis
SPMS Secondary progressive multiple sclerosis
1 Participants17 Participants14 Participants2 Participants
Race/Ethnicity, Customized
African
0 participants0 participants0 participants0 participants
Race/Ethnicity, Customized
Caucasian
3 participants34 participants14 participants17 participants
Race/Ethnicity, Customized
Missing
0 participants3 participants2 participants1 participants
Race/Ethnicity, Customized
Other
1 participants4 participants1 participants2 participants
Sex: Female, Male
Female
3 Participants32 Participants13 Participants16 Participants
Sex: Female, Male
Male
1 Participants9 Participants4 Participants4 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
0 / 170 / 40 / 20
other
Total, other adverse events
10 / 173 / 416 / 20
serious
Total, serious adverse events
1 / 171 / 41 / 20

Outcome results

Primary

Percentage of Participants Achieving Seroconversion One Week After Receiving Second Vaccine (EAS)

Participants who had detectable SARS-CoV-2 serum functional antibodies one week after second dose of vaccine.

Time frame: At 1 week after vaccination period (defined as 1 week after second dose of vaccine)

Population: Efficacy analysis set (EAS) - all participants who had a valid primary endpoint (i. e. determination of functional antibodies to SARS-CoV-2 at Week 1 after second dose of vaccine)

ArmMeasureValue (NUMBER)
Siponimod - ContinuousPercentage of Participants Achieving Seroconversion One Week After Receiving Second Vaccine (EAS)52.9 percentage of participants
Siponimod- InterruptedPercentage of Participants Achieving Seroconversion One Week After Receiving Second Vaccine (EAS)75.0 percentage of participants
DMT or no MS TreatmentPercentage of Participants Achieving Seroconversion One Week After Receiving Second Vaccine (EAS)90.0 percentage of participants
Secondary

Number of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EAS

The release of IFNg or IL-2 after stimulation with a SARS-CoV-2/PAN corona peptide-mix measured by enzyme-linked immunosorbent spot (ELIspot) assay from peripheral blood mononuclear cells indicates the presence of SARS-CoV-2 reactive T-cells, i.e. a T-cell response.

Time frame: Baseline; Week 1, Month 1 and Month 6 after second dose of vaccine; 1 month after booster (up to Month 12 after second dose of vaccine)

Population: Safety analysis set (received any study drug) and efficacy analysis set (participants with a valid primary endpoint)

ArmMeasureGroupValue (NUMBER)
Siponimod - ContinuousNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 1/Week 1 missing value n=17,4,202 participants
Siponimod - ContinuousNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 1 Month after booster not reactive n=16,4,1810 participants
Siponimod - ContinuousNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 2/Month 1 missing value n=16,4,200 participants
Siponimod - ContinuousNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 3/Month 6 reactive n=17,4,204 participants
Siponimod - ContinuousNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 2/Month 1 reactive n=16,4,200 participants
Siponimod - ContinuousNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASScreening missing value n=17,4,207 participants
Siponimod - ContinuousNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 2/Month 1 not reactive n=16,4,2016 participants
Siponimod - ContinuousNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASScreening not reactive n=17,4,2010 participants
Siponimod - ContinuousNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 1 Month after booster reactive n=16,4,184 participants
Siponimod - ContinuousNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 1/Week 1 reactive n=17,4,207 participants
Siponimod - ContinuousNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASScreening reactive n=17,4,200 participants
Siponimod - ContinuousNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 3/Month 6 missing value n=17,4,202 participants
Siponimod - ContinuousNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 1/Week 1 not reactive n=17,4,208 participants
Siponimod - ContinuousNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 1 Month after booster missing value n=16,4,182 participants
Siponimod - ContinuousNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 3/Month 6 not reactive n=17,4,2011 participants
Siponimod- InterruptedNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 1/Week 1 reactive n=17,4,203 participants
Siponimod- InterruptedNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASScreening reactive n=17,4,200 participants
Siponimod- InterruptedNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASScreening not reactive n=17,4,203 participants
Siponimod- InterruptedNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASScreening missing value n=17,4,201 participants
Siponimod- InterruptedNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 1/Week 1 not reactive n=17,4,201 participants
Siponimod- InterruptedNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 1/Week 1 missing value n=17,4,200 participants
Siponimod- InterruptedNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 2/Month 1 reactive n=16,4,201 participants
Siponimod- InterruptedNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 2/Month 1 not reactive n=16,4,203 participants
Siponimod- InterruptedNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 2/Month 1 missing value n=16,4,200 participants
Siponimod- InterruptedNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 3/Month 6 reactive n=17,4,201 participants
Siponimod- InterruptedNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 3/Month 6 not reactive n=17,4,203 participants
Siponimod- InterruptedNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 3/Month 6 missing value n=17,4,200 participants
Siponimod- InterruptedNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 1 Month after booster reactive n=16,4,182 participants
Siponimod- InterruptedNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 1 Month after booster not reactive n=16,4,182 participants
Siponimod- InterruptedNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 1 Month after booster missing value n=16,4,180 participants
DMT or no MS TreatmentNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 1/Week 1 not reactive n=17,4,208 participants
DMT or no MS TreatmentNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 1 Month after booster missing value n=16,4,180 participants
DMT or no MS TreatmentNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 3/Month 6 not reactive n=17,4,205 participants
DMT or no MS TreatmentNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 1/Week 1 reactive n=17,4,2012 participants
DMT or no MS TreatmentNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 1 Month after booster not reactive n=16,4,183 participants
DMT or no MS TreatmentNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 3/Month 6 missing value n=17,4,201 participants
DMT or no MS TreatmentNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASScreening missing value n=17,4,200 participants
DMT or no MS TreatmentNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 2/Month 1 reactive n=16,4,2014 participants
DMT or no MS TreatmentNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASScreening reactive n=17,4,201 participants
DMT or no MS TreatmentNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 2/Month 1 not reactive n=16,4,206 participants
DMT or no MS TreatmentNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 1/Week 1 missing value n=17,4,200 participants
DMT or no MS TreatmentNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 1 Month after booster reactive n=16,4,1815 participants
DMT or no MS TreatmentNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 2/Month 1 missing value n=16,4,200 participants
DMT or no MS TreatmentNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASScreening not reactive n=17,4,2019 participants
DMT or no MS TreatmentNumber of Patients Reactive to INFg or IL-2 SARS-CoV-2 by Visit SAF/EASVisit 3/Month 6 reactive n=17,4,2014 participants
Secondary

SARS-CoV-2 Functional Antibodies (% Inhibition) by Visits (SAF/EAS)

Measurement of antibody-mediated blockage (i.e. presence of functional SARS-CoV-2 antibodies) was performed to quantify functional SARS-CoV-2 neutralizing antibodies and was calculated as % inhibition to the in-assay control.

Time frame: Baseline; Week 1, Month 1 and Month 6 after second dose of vaccine; 1 month after booster (up to Month 12 after second dose of vaccine)

Population: Safety analysis set (received any study drug) and efficacy analysis set (participants with a valid primary endpoint)

ArmMeasureGroupValue (MEAN)Dispersion
Siponimod - ContinuousSARS-CoV-2 Functional Antibodies (% Inhibition) by Visits (SAF/EAS)Visit 3/Month 6 n=16,4,2043.2 antibody titer levels (% inhibition)Standard Deviation 32.8
Siponimod - ContinuousSARS-CoV-2 Functional Antibodies (% Inhibition) by Visits (SAF/EAS)Visit 2/Month 1 n=16,4,2040.1 antibody titer levels (% inhibition)Standard Deviation 27.2
Siponimod - ContinuousSARS-CoV-2 Functional Antibodies (% Inhibition) by Visits (SAF/EAS)Screening n=17,4,20-3.8 antibody titer levels (% inhibition)Standard Deviation 5
Siponimod - ContinuousSARS-CoV-2 Functional Antibodies (% Inhibition) by Visits (SAF/EAS)Visit 1/Week 1 n=17,4,2038.1 antibody titer levels (% inhibition)Standard Deviation 34.8
Siponimod - ContinuousSARS-CoV-2 Functional Antibodies (% Inhibition) by Visits (SAF/EAS)1 Month after booster n=16,4,1862.3 antibody titer levels (% inhibition)Standard Deviation 30.3
Siponimod- InterruptedSARS-CoV-2 Functional Antibodies (% Inhibition) by Visits (SAF/EAS)Visit 2/Month 1 n=16,4,2087.5 antibody titer levels (% inhibition)Standard Deviation 16.4
Siponimod- InterruptedSARS-CoV-2 Functional Antibodies (% Inhibition) by Visits (SAF/EAS)Screening n=17,4,20-0.3 antibody titer levels (% inhibition)Standard Deviation 11.1
Siponimod- InterruptedSARS-CoV-2 Functional Antibodies (% Inhibition) by Visits (SAF/EAS)Visit 1/Week 1 n=17,4,2064.0 antibody titer levels (% inhibition)Standard Deviation 41.8
Siponimod- InterruptedSARS-CoV-2 Functional Antibodies (% Inhibition) by Visits (SAF/EAS)Visit 3/Month 6 n=16,4,2068.3 antibody titer levels (% inhibition)Standard Deviation 34.5
Siponimod- InterruptedSARS-CoV-2 Functional Antibodies (% Inhibition) by Visits (SAF/EAS)1 Month after booster n=16,4,1896.5 antibody titer levels (% inhibition)Standard Deviation 2.4
DMT or no MS TreatmentSARS-CoV-2 Functional Antibodies (% Inhibition) by Visits (SAF/EAS)1 Month after booster n=16,4,1896.8 antibody titer levels (% inhibition)Standard Deviation 2.8
DMT or no MS TreatmentSARS-CoV-2 Functional Antibodies (% Inhibition) by Visits (SAF/EAS)Visit 3/Month 6 n=16,4,2077.3 antibody titer levels (% inhibition)Standard Deviation 27.1
DMT or no MS TreatmentSARS-CoV-2 Functional Antibodies (% Inhibition) by Visits (SAF/EAS)Screening n=17,4,20-2.6 antibody titer levels (% inhibition)Standard Deviation 8.2
DMT or no MS TreatmentSARS-CoV-2 Functional Antibodies (% Inhibition) by Visits (SAF/EAS)Visit 2/Month 1 n=16,4,2086.8 antibody titer levels (% inhibition)Standard Deviation 21.5
DMT or no MS TreatmentSARS-CoV-2 Functional Antibodies (% Inhibition) by Visits (SAF/EAS)Visit 1/Week 1 n=17,4,2082.6 antibody titer levels (% inhibition)Standard Deviation 26.7

Source: ClinicalTrials.gov · Data processed: Feb 13, 2026