Clinical trial Recruiting at 1 site Phase 1 Interventional Ages 5 to 35

Evaluating GMCN-508A for treating transfusion-dependent α-thalassemia

Official title: A Phase 1 Open Label Study Evaluating the Safety and Efficacy of Gene Therapy in Subjects With Transfusion-dependent α-Thalassemia by Transplantation of Autologous CD34+ Cells Transduced Ex Vivo With a Lentiviral Vector (GMCN-508A Drug Product)

Run by First Affiliated Hospital of Guangxi Medical University · NCT05757245 · Data updated 2026-11-12

This study is testing a new treatment using a patient's own stem cells to see if it can help young people with transfusion-dependent α-thalassemia live healthier lives.

More Transfusion-dependent Beta-Thalassemia trials

Quick facts

PhasePhase 1
Study typeInterventional
Ages5 Years to 35 Years
SexAll
Enrollment5 (estimated)
SponsorFirst Affiliated Hospital of Guangxi Medical University
Academic / other
Locations1 site (Nanning, Guangxi)
StatusRecruiting
StartedMay 8, 2023
Main results expectedAugust 1, 2028
Study endsDecember 31, 2030
Registry record updatedApril 18, 2023
Trial IDNCT05757245 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are individuals aged 5 to 35 years who are diagnosed with transfusion-dependent α-thalassemia and meet specific performance and treatment criteria.

Probably not a fit

Patients with mild α-thalassemia or other specified hemoglobin disorders may not benefit from this treatment.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This phase 1 clinical trial is a non-randomized, open-label study involving up to 5 participants aged 5 to 35 years with transfusion-dependent α-thalassemia. It aims to assess the safety and efficacy of autologous hematopoietic stem cell transplantation using the GMCN-508A drug product, which involves transducing the patient's own CD34+ hematopoietic stem cells with a lentiviral vector encoding the human α-globin gene. Participants will be monitored for a duration of 5 years to evaluate treatment outcomes.

Why it matters

Potential benefit: If successful, this treatment could significantly reduce or eliminate the need for blood transfusions in patients with α-thalassemia.

How similar studies have gone: While this approach is novel, similar gene therapy strategies have shown promise in treating other hemoglobinopathies, indicating potential for success.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. The subject himself/herself or one legal guardian/agent of the subject is required to fully understand the study and voluntarily sign a written informed consent.
2. Ages 5 to 35, no gender limitation.
3. The clinical diagnosis of Transfusion-dependent α-Thalassemia.Transfusion dependence was defined as ≥6 Units of transfusions of pRBCs for the prior 24 weeks without \>56 days of non-transfusion.
4. Karnofsky Level of Performance (KPS) score or Lansky Level of Performance (LPS) score ≥70.
5. Subjects were determined to undergo autologous hematopoietic stem cell transplantation and conditioning procedure by the principle investigator.
6. Subjects were willing to comply with the protocol.
7. Fertile Subjects are willing to take effective contraceptive measures during the study.

Exclusion Criteria:

1. Diagnosed with mild α-thalassemia, Hb Bart's edema, ATRx α-thalassemia, hemoglobin S/β-thalassemia, myelodysplastic subtype anemia, or with HbE homozygous β gene mutation, or with any type of β-thalassemia Thalassemia.
2. Uncorreted Bleeding disorders with frequent bleeding (eg, menorrhagia, epistaxis, coagulation disorders).
3. Bacterial, fungal, parasitic or viral infection as determined by the investigator to be clinically significant.
4. Presence of severe iron overload.
5. Any prior or current malignancy, myeloproliferative disorders or immunodeficiency disorders.
6. Any major medical disease, laboratory test abnormality or mental illness that would render the participant ineligible for the study.
7. Immediate family member with a known Familial Cancer Syndrome.
8. Prior receipt of gene therapy, allogeneic bone marrow transplantation or allogeneic hematopoietic stem cell transplantation.
9. Participation in another clinical study with an investigational drug 3 months prior to Screening.
10. Pregnancy, plan to be pregnant during study or breastfeeding in a postpartum female.
11. Known hypersensitivity to any ingredients or excipients of the test drug.
12. Eligible for allogeneic bone marrow transplantation or allogeneic hematopoietic stem cell transplantation with a known and available donor.
13. Any other condition that would render the participant ineligible for the study, as determined by the investigator.

Where it's running

  • The affiliated hospital of guangxi medical university
    Nanning, Guangxi, China
    Recruiting

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.