Phase 2 Transverse Myelitis Trial, Recruiting NCT05549258 Sponsor: Amgen Condition: Transverse Myelitis
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Phase 2 Transverse Myelitis Trial, Recruiting

NCT05549258
Recruiting Phase 2

Who may be able to join

AI generated eligibility summary. Written by an AI model from the official source data and checked on a sample basis. It can contain mistakes, so confirm anything important against the original source. How we use AI

Who might be able to join this trial:

  • Children and teenagers between 2 and under 18 years old, who weigh at least 15 kg (about 33 lbs), regardless of sex.
  • Participants who have tested positive for a specific antibody called anti-AQP4-IgG in their blood and have been diagnosed with a condition called NMOSD (Neuromyelitis Optica Spectrum Disorder).
  • Participants who have had at least one NMOSD attack (relapse) in the past year, or at least two NMOSD attacks in the past two years.

Who may not be able to join:

  • Anyone with a health condition that, in the doctor's opinion, could interfere with the study or affect the safety results (confirm with trial site).
  • Anyone who has taken part in another clinical trial using an experimental treatment within the past 4 weeks or longer, depending on the treatment used.
  • Anyone with significant problems with their liver, kidneys, metabolism, or blood counts (confirm with trial site).
  • Anyone whose B-cell count (a type of immune cell) is too low for their age based on lab testing.
  • Anyone who has ever received any of the following treatments at any time: alemtuzumab, total lymphoid irradiation (a type of radiation therapy), a bone marrow transplant, or T-cell vaccination therapy.
  • Anyone who received rituximab or a similar experimental immune-cell-reducing treatment within the past 6 months, unless their B-cell counts have recovered to an acceptable level.
  • Anyone who received intravenous immunoglobulin (IVIG, a blood-derived immune treatment) within the past month.
  • Anyone who received any of the following medications within the past 2 months: cyclosporine, methotrexate, mitoxantrone, cyclophosphamide, tocilizumab, satralizumab, or eculizumab.
  • Anyone who received natalizumab (Tysabri®) within the past 6 months.
  • Anyone with a history of severe allergic reactions or anaphylaxis to 2 or more foods or medicines, including known sensitivity to paracetamol/acetaminophen, antihistamines, or steroid medications like methylprednisolone.
  • Anyone with another autoimmune disease that is not well controlled (unless the medical team overseeing the study approves).
  • Anyone who received a live or weakened (attenuated) vaccine within the past 4 weeks (note: certain non-live vaccines are acceptable — confirm with trial site).
  • Anyone who received the BCG (tuberculosis) vaccine within the past year.
  • Anyone who had a blood transfusion within the past 4 weeks before or during the screening period.
  • Anyone with a serious active or long-lasting infection (viral, bacterial, or fungal) that has required treatment or hospitalisation within the past 2 months.
  • Anyone with a known history of a weakened immune system due to conditions such as HIV, removal of the spleen, or other immune deficiencies that increase infection risk.
  • Anyone who tests positive for a chronic hepatitis B infection at screening.
  • Anyone who tests positive for hepatitis C antibodies.
  • Anyone who tests negative for immunity to chickenpox (varicella zoster virus).
  • Anyone with a history of cancer, except for certain treated skin cancers that were successfully cured more than 3 months ago.
  • Anyone with a history of active or latent (inactive) tuberculosis, or a positive TB screening test, unless they have completed TB treatment or are actively on treatment and have completed at least one month of it (confirm with trial site for specific rules).
  • Anyone who is unable to have an MRI scan, for example due to an allergy to MRI contrast dye, or having a pacemaker or other metal implants in or on the body.
  • Anyone who is unable to tolerate or cooperate with the MRI scanning procedure.

Important: Always verify eligibility with the trial site directly before applying.

Based on publicly available eligibility criteria from ClinicalTrials.gov. Verify directly with the trial site before acting. This is not medical advice.

This is a simplified plain English summary of the eligibility criteria. Full criteria are set by the trial investigators and may include additional requirements not shown here. Never self-exclude from a trial based on this summary. Contact the trial site directly to confirm your eligibility.
Last synced 28 July 2026
Phase 2: approximately ~30% of drugs entering this phase reach regulatory approval, based on published industry-wide historical data. This is not specific to this trial.
Phase success rates shown are historical industry-wide averages based on published data. They are not a prediction for this specific trial or your individual situation.

Contact this trial

Principal Investigator: MD, Amgen

Phone: 866-572-6436

Contact details sourced from ClinicalTrials.gov. Verify directly with the trial site before attending.

GP referral letter

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Trial details

Status
Recruiting
Phase
Phase 2
Sponsor
Registry
ClinicalTrials.gov
Start date
3 July 2023
Est. completion
13 April 2027

Where this trial is recruiting

🇦🇷 Argentina 🇧🇷 Brazil 🇨🇦 Canada 🇫🇷 France 🇳🇱 Netherlands 🇵🇱 Poland 🇷🇸 Serbia 🇪🇸 Spain 🇸🇪 Sweden 🇬🇧 United Kingdom 🇺🇸 United States

Primary endpoints

Maximum Observed Concentration (Cmax) of Inebilizumab; Area Under the Concentration Versus Time Curve of Inebilizumab from Time 0 to 14 Days Post-dose (AUC0-14d); Area Under the Concentration Versus Time Curve of Inebilizumab from Time 0 Extrapolated to Infinity (AUC0-Inf); Systemic Clearance (CL) of Inebilizumab; Terminal Elimination Half-life (t½) of Inebilizumab; Volume of Distribution at Steady State (VSS) of Inebilizumab; Change from Baseline in Peripheral Cluster of Differentiation (CD)20-positive B-cell Counts; Number of Participants Experiencing Treatment-emergent Adverse Events (TEAEs...

Can't join this trial?

Expanded access pathways

If this trial is not available to you, other access pathways may exist. In Australia, the TGA Special Access Scheme allows access to unapproved therapeutic goods for individual patients.

TGA Special Access Scheme information

Find other recruiting trials on ClinicalTrials.gov

Data last synced from ClinicalTrials.gov: 28 July 2026. Trial status can change. Always verify current status directly with the trial site before making any decision.

Trial recruitment status can change without notice between our nightly data updates. Always contact the trial site directly to confirm current recruitment status before making any decisions or travel arrangements.

View original record on ClinicalTrials.gov