Skip to main content

Long-term Follow-up of Subjects With Transfusion-Dependent β-Thalassemia (TDT) Treated With Ex Vivo Gene Therapy

Active, not recruiting · NCT02633943

Conditions: Transfusion-dependent Beta-Thalassemia

At a glance

Research payments reported, 2025
$1.4M
U.S. investigators named
7
Sites paid
9
Planned or actual enrollment
66

About the trial

Sponsor
Genetix Biotherapeutics Inc.
Tested
Safety and efficacy assessments (other)
Dates
Started 2014-01; completion 2035-11
Results posted
Not yet

This is a multi-center, long-term safety and efficacy follow-up study for subjects with transfusion-dependent β-thalassemia (TDT) who have been treated with ex vivo gene therapy drug product in bluebird bio-sponsored parent clinical studies. After completing the parent clinical studies (approximately 2 years), eligible subjects will be followed for an additional 13 years for a total of 15 years post-drug product infusion. No investigational drug product will be administered in this study.

From ClinicalTrials.gov, last updated 2025-04-09. Full record, eligibility and contacts (opens in a new tab)

Industry funding

Genetix Biotherapeutics Inc reported $1.4M in research payments for this study in 2025 (61 payments).

Products named: Zynteglo

Research payments usually go to hospitals, universities and research sites to run a study, not to the investigators personally. A payment is not evidence of wrongdoing.

U.S. investigators named on this study

Clinicians the company named as principal investigators in its Open Payments reports.

Sites paid to run it

Sources: CMS Open Payments research payments (program year 2025) and ClinicalTrials.gov, U.S. National Library of Medicine.