NCT06312644 · Alexion Pharmaceuticals, Inc.
Study of Ultomiris® (Ravulizumab) Safety in Pregnancy
What this study is about
The primary objective of this study is to describe the frequency and characteristics of pregnancy outcomes and maternal complications among participants exposed to Ultomiris and to describe the frequency and characteristics of selected fetal/neonatal/infant outcomes in utero, at birth, and through 1 year of age after exposure in utero or via breastmilk.
View original scientific description
The primary objective of this study is to describe the frequency and characteristics of pregnancy outcomes and maternal complications among participants exposed to Ultomiris and to describe the frequency and characteristics of selected fetal/neonatal/infant outcomes in utero, at birth, and through 1 year of age after exposure in utero or via breastmilk.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Female participant must have a medically confirmed qualifying pregnancy (prospectively or retrospectively identified).
- Participant informed consent (written or e-consent per local regulations or ethics committee requirements) must be obtained prior to the participant's enrollment. If the participant is a minor, consent must be obtained from the parent or legal guardian, with assent from the minor (as locally appropriate).
- Willing to provide contact information for the participant.
- Willing to authorize HCP(s) to release maternal and infant medical information to the study, upon request, if applicable to current local regulations.
- Diagnosed with an indication for which Ultomiris is approved, based on HCP or medical records.
- Exposed to Ultomiris at any point during the defined exposure window based on HCP or medical record documentation. (If exact exposure dates are unknown, the reporter must be able to specify or estimate trimester or timing of exposure \[prior to conception as LMP+14 days, or during breastfeeding\].)
- Use of Ultomiris per local product information (i.e., United States Prescribing Information \[USPI\] or summary of product characteristics \[SmPC\])
Exclusion criteria
- Participants who are unable to provide consent or assent (as locally appropriate) (e.g., diagnosed with severe psychiatric conditions or severe intellectual disabilities) will be excluded from this study
Where
- Boston, Massachusetts
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Apr 16, 2026 · Source of record for eligibility and locations