An Observational Study to Learn About the Interferon-beta Exposure of Pregnant Women During the Second and Third Trimester in Finland and Sweden

NCT ID: NCT06053749

Last Updated: 2025-12-26

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ACTIVE_NOT_RECRUITING

Total Enrollment

4 participants

Study Classification

OBSERVATIONAL

Study Start Date

2024-03-20

Study Completion Date

2026-03-31

Brief Summary

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Observational data have suggested no increased risk of adverse pregnancy outcomes associated with exposure to interferon-beta (IFNB) before or during pregnancy. After the emergence of these data, the European Medicines Agency approved a label change for IFNB in September 2019, stating that use of IFNB during pregnancy may be considered, if clinically needed. However, limited data on pregnancies exposed in the 2nd and 3rd trimesters were observed.

INFORM is a secondary use of data drug utilisation study (DUS) to determine late pregnancy exposure (i.e. during the 2nd and 3rd trimester) to IFNB in Finland and Sweden, which will inform whether the number of exposed pregnancies is adequate to conduct a cohort study on adverse pregnancy outcomes, with a focus on late pregnancy exposure.

The number of pregnancies will be initially reported three years after the revised label implementation (September 2019) and will include data on pregnancies from 1996 in Finland and from 2005 in Sweden up through 31 December 2022. If the number of pregnancies is deemed adequate for conducting the cohort study on adverse pregnancy outcomes, this DUS will be finalised with the drug utilisation data accrued up through 31 December 2022. If the number of pregnancies until 31 December 2022 is deemed inadequate, this study may be continued and the primary and secondary objectives may be examined five years after the revised label implementation, including pregnancies until 31 December 2024.

Detailed Description

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Conditions

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Multiple Sclerosis (MS)

Study Design

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Observational Model Type

COHORT

Study Time Perspective

OTHER

Study Groups

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Pregnancies exposed to IFNB (regardless of other MSDMDs)

With dispensed IFNB, regardless of other MS disease modifying drugs (MSDMDs) during the pre-pregnancy period or during pregnancy

Avonex (IFNβ-1-a, Biogen Netherlands B.V)

Intervention Type DRUG

Information on drug use in hospitals and outpatient clinics are not recorded in the drug registers used in the study and, thus, information on exposure to these medications is not available.

Rebif (IFNβ-1-a, Merck Europe B.V.)

Intervention Type DRUG

Information on drug use in hospitals and outpatient clinics are not recorded in the drug registers used in the study and, thus, information on exposure to these medications is not available.

Extavia (IFNβ-1-b, Novartis Europharm Limited)

Intervention Type DRUG

Information on drug use in hospitals and outpatient clinics are not recorded in the drug registers used in the study and, thus, information on exposure to these medications is not available.

Betaseron (IFN-β-1-b, BAY86-5046, Bayer AG)

Intervention Type DRUG

Information on drug use in hospitals and outpatient clinics are not recorded in the drug registers used in the study and, thus, information on exposure to these medications is not available.

Plegridy (Peg IFNβ-1-a, Biogen Netherlands B.V)

Intervention Type DRUG

Information on drug use in hospitals and outpatient clinics are not recorded in the drug registers used in the study and, thus, information on exposure to these medications is not available.

MS disease modifying drugs (MSDMDs)

Intervention Type DRUG

Information on drug use in hospitals and outpatient clinics are not recorded in the drug registers used in the study and, thus, information on exposure to these medications is not available.

Pregnancies unexposed to IFNB (regardless of other MSDMDs)

No dispensed IFNB during the pre-pregnancy period nor any time during pregnancy, regardless of other MSDMDs

Outcomes:

MS disease modifying drugs (MSDMDs)

Intervention Type DRUG

Information on drug use in hospitals and outpatient clinics are not recorded in the drug registers used in the study and, thus, information on exposure to these medications is not available.

Pregnancies exposed to IFNB only

With dispensed IFNB, no other MS disease modifying drugs (MSDMDs) during the pre-pregnancy period or during pregnancy

Avonex (IFNβ-1-a, Biogen Netherlands B.V)

Intervention Type DRUG

Information on drug use in hospitals and outpatient clinics are not recorded in the drug registers used in the study and, thus, information on exposure to these medications is not available.

Rebif (IFNβ-1-a, Merck Europe B.V.)

Intervention Type DRUG

Information on drug use in hospitals and outpatient clinics are not recorded in the drug registers used in the study and, thus, information on exposure to these medications is not available.

Extavia (IFNβ-1-b, Novartis Europharm Limited)

Intervention Type DRUG

Information on drug use in hospitals and outpatient clinics are not recorded in the drug registers used in the study and, thus, information on exposure to these medications is not available.

Betaseron (IFN-β-1-b, BAY86-5046, Bayer AG)

Intervention Type DRUG

Information on drug use in hospitals and outpatient clinics are not recorded in the drug registers used in the study and, thus, information on exposure to these medications is not available.

Plegridy (Peg IFNβ-1-a, Biogen Netherlands B.V)

Intervention Type DRUG

Information on drug use in hospitals and outpatient clinics are not recorded in the drug registers used in the study and, thus, information on exposure to these medications is not available.

Pregnancies unexposed to IFNB nor other MSDMDs

No dispensed IFNB nor any other MSDMDs during the pre-pregnancy period nor any time during pregnancy

No interventions assigned to this group

Interventions

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Avonex (IFNβ-1-a, Biogen Netherlands B.V)

Information on drug use in hospitals and outpatient clinics are not recorded in the drug registers used in the study and, thus, information on exposure to these medications is not available.

Intervention Type DRUG

Rebif (IFNβ-1-a, Merck Europe B.V.)

Information on drug use in hospitals and outpatient clinics are not recorded in the drug registers used in the study and, thus, information on exposure to these medications is not available.

Intervention Type DRUG

Extavia (IFNβ-1-b, Novartis Europharm Limited)

Information on drug use in hospitals and outpatient clinics are not recorded in the drug registers used in the study and, thus, information on exposure to these medications is not available.

Intervention Type DRUG

Betaseron (IFN-β-1-b, BAY86-5046, Bayer AG)

Information on drug use in hospitals and outpatient clinics are not recorded in the drug registers used in the study and, thus, information on exposure to these medications is not available.

Intervention Type DRUG

Plegridy (Peg IFNβ-1-a, Biogen Netherlands B.V)

Information on drug use in hospitals and outpatient clinics are not recorded in the drug registers used in the study and, thus, information on exposure to these medications is not available.

Intervention Type DRUG

MS disease modifying drugs (MSDMDs)

Information on drug use in hospitals and outpatient clinics are not recorded in the drug registers used in the study and, thus, information on exposure to these medications is not available.

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Women with a diagnosis of MS disease, regardless of MS clinical type, recorded at least once during the full study period.
* Women with at least one recorded pregnancy after the MS diagnosis (including pregnancies ending in live birth, stillbirth, spontaneous abortion, ectopic pregnancy, or elective termination)

Exclusion Criteria

\- None.
Minimum Eligible Age

12 Years

Maximum Eligible Age

64 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No

Sponsors

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Biogen Netherlands B.V

UNKNOWN

Sponsor Role collaborator

Novartis Europharm Limited

UNKNOWN

Sponsor Role collaborator

Merck Europe B.V.

UNKNOWN

Sponsor Role collaborator

Bayer

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Many locations

Multiple Locations, , Finland

Site Status

Many locations

Multiple Locations, , Sweden

Site Status

Countries

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Finland Sweden

Related Links

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http://clinicaltrials.bayer.com/

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Other Identifiers

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EUPAS38736

Identifier Type: OTHER

Identifier Source: secondary_id

21334

Identifier Type: -

Identifier Source: org_study_id