Gene fix for thalassemia: first human test shows promise
NCT ID NCT01639690
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This early-stage study tests a gene therapy for adults with β-thalassemia major, a severe blood disorder requiring frequent transfusions. Doctors take the patient's own stem cells, fix the faulty gene, and return the corrected cells via an IV. A low dose of busulfan prepares the body to accept the new cells. The main goals are to check safety and see if the treated cells can produce normal red blood cells.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 1
The first testing in people. Mainly checks safety and dose, usually in a small group.
- Participants
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About 10 people
The number the study aims to enrol. It can still change while the study runs.
- Start date
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Jul 2012
- Expected to finish
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Jul 2027
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Subjects must be 18 years or older * Subjects may be of either gender or of any ethnic background * Subjects must have a confirmed diagnosis of ß-thalassemia major and have been enrolled in a hypertransfusion program with a confirmed annual transfusion of ≥100 mL/kg/yr but \< 200 mL/kg/yr, AND ≥ 8 transfusions of blood per year over a minimum of two years. * Patients must NOT have an HLA-matched sibling * Patients must be off hydroxyurea (HU) or erythropoietin (EPO) treatment for at least three months prior to entry onto the study * Subjects must have a performance score of Karnofsky ≥70% at the time of entry into the study. * Subjects must have liver iron value of \< 15 mg/g/dry weight Iron quantitation may be performed by imaging such as T2\*MRI or by biopsy * Subjects must have no evidence of cirrhosis\*\* of the liver. Fibrosis of the liver can be tested by Fibroscan (47, 48, 49), or by liver biopsy. These should be performed within approximately a one year period prior to entry onto the study. * Subjects with an evaluation of cardiac function indicating: * normal function on MUGA scan (Multiple Gated Acquisition scan) or other methodology. And * Patients must have a left ventricular ejection fraction (LVEF) of ≥ 60% and/or T2\*MRI cardiac evaluation with T2\* ≥20 milliseconds * Subjects with asymptomatic pulmonary function based on Lung Diffusion Testing DLCO Test DLCO ≥ 50% of predicted (corrected for hemoglobin) * Subjects with a determination of renal function based on: serum creatinine \< than or = to 1.5 mg/dL or if serum creatinine is outside the normal range, then CrCl \> 60-ml/min/1.73 m2 * Subjects must have adequate hepatic function based on: * \< 3 x ULN ALT and * \< 2.0 total serum bilirubin (unless secondary to hemolysis) * Patients must be available for follow-up evaluations at 30, 60, 180 days post BMT and yearly thereafter indefinitely. * The possibility of unrelated donor stem cell transplantation will be discussed with patients, and a "preliminary" search for an unrelated donor may be done at the request of the patient. However, the finding of a potential HLA-matched unrelated donor will not exclude the patient from participating into this trial). * As the inclusion criteria are more specific than the Lucarelli/Pesaro thalassemia pre-transplant classification (Class 1,2 or 3 according to presence or absence of fibrosis, adequate chelation and/or hepatomegaly), the criteria stated above will be used in lieu of the Lucarelli/Pesaro classification. Exclusion Criteria: * Active infections including Hepatitis B and Hepatitis C\*\*\*, * Active infections including HTLV 1 and 2, and HIV 1 and 2 * Patients with treated HLTV or HIV * Diabetes Mellitus * Bone Marrow myelodysplasia and/or chromosomal abnormalities * Female patient pregnant or breast feeding * Patients with uncontrolled seizure disorders * Patients with severe pulmonary hypertension Tricuspid Jet velocity \> 2.5 m/sec * Family history of familial cancer syndromes (leukemia, breast, ovarian, colorectal, etc.) \*\*\* Definition of active Hepatitis C include: * Positive HCV RNA Viral load by quantitative PCR testing Or if Negative HCV RNA viral load BUT on antiviral treatment * Liver biopsy with pathologic evidence of * Necrosis and inflammation around the portal areas - piecemeal necrosis or interface hepatitis or necrosis of hepatocytes and focal inflammation in the liver parenchyma. * Inflammatory cells in the portal areas ("portal inflammation"). * Fibrosis, with early stages being confined to the portal tracts, intermediate stages being expansion of the portal tracts and bridging between portal areas or to the central area, and late stages being frank cirrhosis characterized by architectural disruption of the liver with fibrosis and regeneration.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Hospital "V.Cervello" Uoc Ematologiaii E Malattie Rare
Palermo, 90146, Italy