NCT05789758Recruiting
A Study to Learn How Nusinersen (Spinraza) Affects Participants With Spinal Muscular Atrophy (SMA) Who Took it Before or During Pregnancy And About The Health of Their Babies
Spinraza (Nusinersen) SMA Pregnancy Exposure Study Within Existing SMA Registries
Source: ClinicalTrials.gov · Last updated 9 Mar 2026
Brief summary (registry, in English)
In this study, researchers will know more about the effects of nusinersen, also known as Spinraza®, in pregnant participants with spinal muscular atrophy, also known as SMA. This is a drug available for doctors to prescribe for people with SMA. Due to the current treatment options that exist, people with SMA may now reach the age where they can become pregnant. But, there is not enough information known yet about what the effects of nusinersen may be on pregnant people with SMA or on their babies. This is known as an "observational" study, which collects health information about study participants without changing their medical care. The pregnant participants for this study will be found using 3 different groups of SMA study research centers: * ISMAR-US (International SMA Registry in the United States) * UK Adult SMA-REACH (Adult SMA Research and Clinical Hub in the United Kingdom) * SMArtCARE (Austria, Germany, and Switzerland) The main goal of this study is to collect birth and health information from 3 groups of participants and their babies. These groups are: * Those who received nusinersen 14 months before the first day of their last period before getting pregnant * Those who received nusinersen 14.5 months before the day they got pregnant * Those who received nusinersen during any time in their pregnancy The main questions researchers want to learn about in this study are: * Loss of pregnancy overall * Loss of pregnancy before the baby was 20 weeks old * Loss of pregnancy after the baby becomes 20 weeks old * Live births * Loss of the baby after birth * Babies who have problems in their body that develop during pregnancy * Babies who are small for their age while in the participant's uterus * Pregnancy that happens outside of the uterus * How many participants die during pregnancy, while the baby is being born, and up to 12 weeks after delivering the baby * Babies who develop problems in their body after birth Researchers will also compare this information to people without SMA who have not received nusinersen. This study will be done as follows: * Information will start being collected when the participant decides to join the study. * Participants will be contacted at each trimester (about every 3 months) to learn about their health and pregnancy. * Participants' doctors will be contacted at each trimester, when the participants are about 6 or 7 months pregnant, and about 4 weeks after the delivery of the baby. * The babies' doctors will be contacted when the baby is 1, 2, 6, 12, 18, and 24 months old. * Each participant will be in the study until the end of their pregnancy and for up to 12 weeks after delivery. Each baby will be in the study for up to 2 years after birth. * The study overall will last at least 10 years from when the first participant joins the study.
- Status (registry)
- Recruiting
- Study type
- Observational
- Enrollment
- 20 (estimated)
- First submitted
- 16 Mar 2023
- Start date
- 15 Dec 2023
- Primary completion date
- 31 Oct 2032
- Lead sponsor
- Biogen
- Diseases
- Spinal muscular atrophy
- NCT number
- NCT05789758
What you commit to
- Study type: Observational
- Planned participants: 20
- From 15 Dec 2023 to the primary completion date, 31 Oct 2032
- 14 sites in 2 countries
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Treatment with risdiplam at any time from the first day of their LMP, 2 weeks prior to the date of conception (approximately 5 half-lives), and/or plans to receive treatment with risdiplam during pregnancy
- NOTE: Other protocol defined Inclusion/Exclusion criteria may apply
Who the study is looking for
- Participant who is currently pregnant (or was pregnant during the relevant exposure window) and enrolled in the United States (US) network of the ISMAR registry, the United Kingdom (UK) Adult SMA REACH, or the Germany, Austria, or Switzerland network of the SMArtCARE registry
- Genetic documentation of spinal muscular atrophy linked to chromosome 5q (5q SMA)
- Documentation that the participant was exposed to nusinersen up to 14 months prior to the first day of their LMP before conception, 14.5 months before conception, and/or at any time during their pregnancy
Age in the registry: 18 years to 54 years · Sex: Female · Does not accept healthy volunteers
Sites (14)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| University Hospitals Birmingham NHS Foundation Trust Coordinator of this site? Confirm its status | Birmingham | United Kingdom | Recruiting |
| North Bristol NHS Trust Coordinator of this site? Confirm its status | Bristol | United Kingdom | Recruiting |
| University College London Hospitals NHS Foundation Trust Coordinator of this site? Confirm its status | London | United Kingdom | Recruiting |
| St George's University NHS Foundation Trust Coordinator of this site? Confirm its status | London | United Kingdom | Recruiting |
| The Newcastle Upon Tyne Hospitals NHS Foundation Trust Coordinator of this site? Confirm its status | Newcastle upon Tyne | United Kingdom | Recruiting |
| Nottingham University Hospitals Trust Coordinator of this site? Confirm its status | Nottingham | United Kingdom | Recruiting |
| The Robert Jones and Agnes Hunt Orthopaedic Hospital NHS Foundation Trust Coordinator of this site? Confirm its status | Oswestry | United Kingdom | Recruiting |
| The Northern Care Alliance NHS Foundation Trust Coordinator of this site? Confirm its status | Salford | United Kingdom | Recruiting |
| Sheffield Teaching Hospitals NHS Foundation Trust Coordinator of this site? Confirm its status | Sheffield | United Kingdom | Recruiting |
| University Hospital Southampton NHS Foundation Trust Coordinator of this site? Confirm its status | Southampton | United Kingdom | Recruiting |
| Boston Children's Hospital Coordinator of this site? Confirm its status | Boston | United States | Recruiting |
| - Coordinator of this site? Confirm its status | Cambridge | United States | Active, not recruiting |
| Columbia University Irving Medical Center Coordinator of this site? Confirm its status | New York | United States | Recruiting |
| Stanford Neuroscience Health Center Coordinator of this site? Confirm its status | Palo Alto | United States | Recruiting |
This page is information, not medical advice. Discuss any trial with your doctor.