Long-term Follow-up of Subjects With Transfusion-Dependent β-Thalassemia (TDT) Treated With Ex Vivo Gene Therapy
Public ClinicalTrials.gov record NCT02633943. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
Long-term Follow-up of Subjects With Transfusion-Dependent β-Thalassemia (TDT) Treated With Ex Vivo Gene Therapy Using Autologous Hematopoietic Stem Cells Transduced With a Lentiviral Vector
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
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.
Study identification
- NCT ID
- NCT02633943
- Recruitment status
- Active, not recruiting
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- 66 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 0 Years to 50 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Dec 31, 2013
- Primary completion
- Oct 31, 2035
- Completion
- Oct 31, 2035
- Last update posted
- Apr 8, 2025
2014 – 2035
United States locations
- U.S. sites
- 6
- U.S. states
- 6
- U.S. cities
- 6
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Not listed | Oakland | California | — | — |
| Not listed | Chicago | Illinois | — | — |
| Not listed | Bethesda | Maryland | — | — |
| Not listed | New York | New York | — | — |
| Not listed | Philadelphia | Pennsylvania | — | — |
| Not listed | Charleston | South Carolina | — | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
Non-U.S. locations
This page focuses on the U.S. directory. The official record also lists 9 non-U.S. sites.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT02633943, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Apr 8, 2025 · Synced Sep 7, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT02633943 live on ClinicalTrials.gov.