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Sickle Cell DiseaseMarch 2023Summary reviewed August 2026

A Monthly Infusion Cut Sickle Cell Pain Crises by Nearly One Per Year

Patients with sickle cell disease who got crizanlizumab infusions had about one fewer pain crisis per year that needed medical care. The treatment worked by blocking a protein that makes blood cells stick together. Most patients stayed on it for two years with no serious side effects.

What the trial was testing

The trial enrolled 57 patients with sickle cell disease. The study was sponsored by Novartis Pharmaceuticals and tracked outcomes across the full group of patients who matched the trial's eligibility profile.

It was initial testing (phase 2). Trials at this stage are designed to produce evidence regulators and physicians can act on — not just observations to follow up later.

What the results showed

The treatment cut pain crises needing medical care by nearly one per year.

Blood advances · 2023 · NCT03264989

These findings — that patients had about one fewer pain crisis needing medical care each year — were published in the Blood advances and represent the headline result of the study.

Researchers tracked outcomes across 57 patients enrolled in the trial. The result was consistent enough across the group that the team felt confident reporting it.

What this means for patients

For patients with sickle cell disease, this result changes the calculus on what to ask their care team about. Whether it changes day-to-day care depends on factors like disease subtype, prior treatments, and where the patient is in their care journey.

What you can do now

This infusion may help reduce how often you need emergency care for pain crises. It's FDA-approved for people 16 and older with sickle cell disease who have repeated crises. Ask your doctor if this treatment could work for you — it's given once a month at an infusion center.

Eligibility for the treatments mentioned above depends on specific test results and clinical history. Bring this summary, the trial name, and your most recent labs or pathology report to your next visit.

Open sickle cell disease trials

RecruitingObservational study

Comparing the Effectiveness of Matched Related Donor Hematopoietic Stem Cell Transplantation to Disease Modifying Therapy in Pediatric Patients With Sickle Cell Disease

The WeDecide study is a large observational study comparing the long-term effects of matched related donor hematopoietic stem cell transplantation (MRD HCT) and non-transplant disease-modifying therapies (NT-DMT) for pediatric patients with sickle cell disease (SCD). The study aims to assess health-related quality of life (HRQoL), cognitive function, risks, and benefits of both treatments, including survival rates, chronic complications, and organ damage prevention. With 160 children in the MRD HCT group and 320 in the NT-DMT group, aged 3-20.9 years, the study will follow participants for three years, examining factors like disease severity, treatment history, and social determinants of health. By providing a comprehensive comparison, the study seeks to inform clinical decisions and improve understanding of SCD treatment outcomes, ultimately supporting families and healthcare providers in choosing the best treatment options.

Birmingham, Alabama, United States +24 more
RecruitingObservational study

European Rare Blood Disorders Platform (ENROL)

ENROL, the European Rare Blood Disorders Platform has been conceived in the core of ERN-EuroBloodNet as an umbrella for both new and already existing registries on Rare Hematological Diseases (RHDs). ENROL aims at avoiding fragmentation of data by promoting the standards for patient registries' interoperability released by the EU RD platform. ENROL's principle is to maximize public benefit from data on RHDs opened up through the platform with the only restriction needed to guarantee patient rights and confidentiality, in agreement with EU regulations for cross-border sharing of personal data. Accordingly, ENROL will map the EU-level demographics, survival rates, diagnosis methods, genetic information, main clinical manifestations, and treatments in order to obtain epidemiological figures and identify trial cohorts for basic and clinical research. To this aim, ENROL will connect and facilitate the upgrading of existing RHD registries, while promoting the building of new ones when / where lacking. Target-driven actions will be carried out in collaboration with EURORDIS for educating patients and families about the benefits of enrolment in such registries, including different cultural and linguistic strategies. The standardized collection and monitoring of disease-specific healthcare outcomes through the ENROL user-friendly platform will determine how specialized care is delivered, where are the gaps in diagnosis, care, or treatment and where best to allocate financial, technical, or human resources. Moreover, it will allow for promoting research, especially for those issues that remain unanswered or sub-optimally addressed by the scientific community; furthermore, it will allow promoting clinical trials for new drugs. ENROL will enable the generation of evidence for better healthcare for RHD patients in the EU as the ultimate goal. ENROL officially started on 1st June 2020 with a duration of 36 months. ENROL is co-funded by the Health Programme of the European Union under the call for proposals HP-PJ-2019 on Rare disease registries for the European Reference Networks. GA number 947670

Barcelona, Catalonia, Spain