Phase 4 Sickle Cell Disease Trial, Recruiting NCT04657822 Sponsor: Novartis Pharmaceuticals Condition: Sickle Cell Disease
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Phase 4 Sickle Cell Disease Trial, Recruiting

NCT04657822
Recruiting Phase 4

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:

  • You are an adult (or a minor whose parent/guardian can provide consent) and are willing to sign a consent form to take part in this follow-on study
  • You are already taking part in a Novartis-sponsored study receiving crizanlizumab, have completed all the required steps in that original study, and your doctor believes you are benefiting from the treatment
  • You have attended your appointments as required in the original study, and your doctor believes you are willing and able to continue attending future appointments

Who may not be able to join:

  • You stopped taking crizanlizumab permanently during the original study before that study was finished
  • You are currently experiencing serious, unresolved side effects (Grade 3 or higher) related to the treatment, or any side effect that required you to pause your doses — though you may still be considered once milder side effects have cleared up (confirm with trial site)
  • You are currently taking part in any other clinical trial (other than the original study), or you plan to join another clinical trial
  • You are currently pregnant or breastfeeding
  • You are a woman who could become pregnant and are unwilling to use highly effective contraception during treatment and for 15 weeks after stopping crizanlizumab
  • You have sickle cell disease but do not meet the original study's requirements to keep receiving crizanlizumab (confirm with trial site)

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 22 July 2026
Phase 4 trials study a drug that has already been approved, monitoring long-term safety and effectiveness in real-world use.

Contact this trial

Principal Investigator: Novartis Pharmaceuticals, Novartis Pharmaceuticals

Phone: 1-888-669-6682

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 4
Registry
ClinicalTrials.gov
Start date
10 June 2021
Est. completion
10 June 2031

Where this trial is recruiting

🇧🇪 Belgium 🇧🇷 Brazil 🇨🇴 Colombia 🇫🇷 France 🇩🇪 Germany 🇮🇹 Italy 🇱🇧 Lebanon Oman 🇪🇸 Spain Turkey (Türkiye) 🇺🇸 United States

Primary endpoints

Not Applicable as this protocol is to provide an option for continued access to crizanlizumab for patients with Sickle Cell Disease who have completed a prior Novartis-sponsored Crizanlizumab study

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: 22 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