Can gene therapy free sickle cell patients from painful crises?

NCT ID NCT07752043

First seen Aug 07, 2026 · Last updated Aug 07, 2026

Summary

This trial compares a new gene therapy to standard care in people aged 12 to 35 with severe sickle cell disease. The gene therapy uses a patient's own blood stem cells, modified to produce a therapeutic form of hemoglobin and reduce the sickling hemoglobin. The study measures how well each approach prevents vaso-occlusive crises, reduces mortality, and improves overall health and quality of life.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance
Gene-modified autologous CD34+ cells transduced with a lentiviral vector expressing therapeutic beta-globin and an anti-HbS miRNA, compared with standard care (hydroxyurea, transfusions, supportive care).
What this could lead to
If successful, this gene therapy could reduce or eliminate painful vaso-occlusive crises and improve quality of life for people with severe sickle cell disease, potentially offering a one-time treatment alternative to lifelong standard care.
What could go wrong
This is an early-phase trial with a small number of participants, so results may not be conclusive. Gene therapy carries risks such as immune reactions, failure of engraftment, or long-term side effects that are not yet fully known.

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Conditions

The condition(s) this trial relates to.

sickle cell disease Vaso-Occlusive Crises

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • Necker-Enfants Malades Hospital, Apheresis Unit

    Paris, Île-de-France Region, 75015, France

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