Phase 2 Sickle Cell Disease Trial, Recruiting NCT06699849 Sponsor: CSL Behring Condition: Sickle Cell Disease
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Phase 2 Sickle Cell Disease Trial, Recruiting

NCT06699849
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:

  • People who are 18 years of age or older at the time of giving consent to join the study.
  • Adolescents aged 12 to under 18 may also be eligible, but only if the trial sponsor and an independent safety committee have approved enrollment for that age group.
  • People who have been diagnosed with sickle cell disease (SCD), of any type.
  • People who have come to the study site with a new pain crisis (called a vaso-occlusive crisis, or VOC) that requires treatment with strong pain medicines given through a drip or injection.

Who may not be able to join:

  • People whose pain crisis began more than 72 hours before they received their first injection or drip-based pain medicine.
  • People who have had more than 5 pain crises requiring a hospital stay in the past 6 months.
  • People who are showing signs of a serious lung complication (called acute chest syndrome).
  • People who have new neurological symptoms that may suggest a stroke or mini-stroke.
  • People who have any level of sudden kidney damage at the time of the visit.
  • People who were discharged from a hospital stay related to a pain crisis or similar event within the 14 days before their current visit.
  • People whose blood haemoglobin level is below 6 g/dL (a measure of severe anaemia).
  • People whose ferritin level (an iron storage measure) is 2000 ng/mL or above.
  • People who are currently taking an approved SCD medication but have not been on a stable, well-tolerated dose of it (confirm with trial site).
  • People who are currently taking methadone or buprenorphine.

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 23 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: Study Director, CSL Behring

Phone: +1 610-878-4697

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

GP referral letter

Print a one-page summary to share with your doctor.

Trial details

Status
Recruiting
Phase
Phase 2
Sponsor
CSL Behring
Registry
ClinicalTrials.gov
Start date
7 August 2025
Est. completion
22 October 2027

Where this trial is recruiting

Turkey (Türkiye) 🇺🇸 United States

Primary endpoints

Number of participants with treatment-emergent adverse events (TEAEs); Percentage of participants with TEAEs; Number of participants with detectable treatment emergent (TE) anti-CSL889 antibodies; Percentage of participants with detectable TE anti-CSL889 antibodies; Time to resolution of VOC (time to discontinuation of parenteral opioids)

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: 23 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