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A Real-world Study About the Impact of Siponimod Treatment on Secondary Progressive Multiple Sclerosis Patients in Russia

Retrospective, Multicenter, Non-interventional (Observational) Study With the Aim to Describe the Impact of Siponimod Treatment in a Real-world SPMS Population in Russia

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT07168694
Acronym
EMBOSSES
Enrollment
606
Registered
2025-09-11
Start date
2024-04-16
Completion date
2024-09-26
Last updated
2025-09-11

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

Siponimod, Treatment of multiple sclerosis, Real-world clinical data

Brief summary

The main aim of the study was to describe the demographic and clinical characteristics of patients with secondary progressive multiple sclerosis (SPMS) who were receiving siponimod therapy in Russia. This study analyzed data from outpatient records/medical records collected across 11 Russian multiple sclerosis (MS) centers. Data collection was carried out from April 16, 2024 to September 26, 2024.

Interventions

None listed

Sponsors

Novartis Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Observational model
COHORT
Time perspective
RETROSPECTIVE

Eligibility

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

Inclusion criteria

* Documented diagnosis of SPMS, with or without relapses. * Treatment with siponimod for at least 6 months.

Exclusion criteria

None.

Design outcomes

Primary

MeasureTime frameDescription
Duration of Siponimod TherapyUp to 2 years
Demographics: Number of Patients by GenderBaseline
Time Between MS Diagnosis and Treatment InitiationBaseline
Time Between SPMS Diagnosis and Treatment InitiationBaseline
Time Between First Symptoms and Treatment InitiationBaseline
Number of Patients by Clinical Characteristic CategoryBaselineClinical characteristics included: * MS symptoms * Magnetic resonance imaging (MRI) performed (yes/no) * Number of contrast-enhancing lesions on T1-weighted images (WI) (Gd+T1 lesions): absent, single, or multiple lesions * CYP2C9 isoenzyme genotype
Number of Patients Categorized by Type of Treatment Received Before Initiation of SiponimodBaselineTreatment categories included glucocorticosteroids, cytostatics, and disease-modifying treatments (DMTs).
Number of Patients by DMT Received Before Initiation of SiponimodBaseline
Duration of the Washout Period After Other DMTs and Before Initiation of SiponimodBaseline
Number of Patients by Reason for Switching From Other DMTs to SiponimodBaseline
Demographics: Number of Patients by AgeBaseline

Secondary

MeasureTime frameDescription
Percentage of Patients With Confirmed Disability Progression Over 6 Months (6m-CDP) Based on the EDSS ScoreMonths 6, 12, 18, 24Confirmed disability progression is determined when a patient shows a sustained or increased EDSS score compared to the date of the first documented worsening of neurological function, assessed at least 6 months later, provided there are no relapses during the assessment period. A clinically meaningful worsening of neurological function is defined as an increase in EDSS score of 1.5 points for patients with a baseline EDSS of 0, 1.0 point for those with a baseline EDSS of 1.0 to 5.5, or 0.5 points for patients with a baseline EDSS of 6.0.
Number of Patients With MS RelapsesBaseline
Annualized Relapse Rate (ARR)1 and 2 years before siponimod initiation and 6, 12, 18, and 24 months after siponimod treatment
Change in ARR From 1 Year Before Siponimod Initiation to 6, 12, 18, and 24 Months After Siponimod Treatment1 year before siponimod initiation and 6, 12, 18, and 24 months after siponimod treatment
Number of Patients With MRI Signs of MS After Siponimod TreatmentMonths 6, 12, 18, 24MRI signs included: * Contrast-enhancing lesions on T1-WI (Gd+T1 lesions): absent, single, or multiple lesions * New/enlarged lesions on T2-WI or contrast-enhancing lesions on T1-WI (Gd+T1 lesions)
Number of Patients by Reason for Stopping Siponimod TreatmentMonths 6, 12, 18, 24
Number of Patients With Siponimod-related Adverse EventsMonths 6, 12, 18, through study follow-up, up to approximately 24 months
Number of Patients With Siponimod-related Serious Adverse EventsMonths 6, 12, 18, through study follow-up, up to approximately 24 months
Change From Baseline in Expanded Disability Status Scale (EDSS) ScoreBaseline and Months 6, 12, 18, 24The EDSS is a tool used by doctors to measure disability in MS patients and monitor changes in the level of disability over time. It focuses on rating 7 functional systems: visual function, brainstem symptoms (speech, swallowing, rapid eye movement), pyramidal (muscle strength and movement), cerebellar (coordination and balance), sensory, bowel and bladder function, and higher cerebral functions (thinking and memory). These ratings are then used in conjunction with observations and information concerning gait and use of assistive devices to rate the EDSS. EDSS scores range from 0 (normal) up to 10 (death due to MS).

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026