Trial reportBlood2021
Long-term outcomes after gene therapy for adenosine deaminase severe combined immune deficiency.
Trial report in Blood, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00794508 (MND-ADA Transduction of CD34+ Cells From the Bone Marrow Of Children With Adenosine Deaminase), which is not on this map. Cited by 27 papers, 1 of them a synthesis that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
MND-ADA Transduction of CD34+ Cells From the Bone Marrow Of Children With Adenosine Deaminase (ADA)-Deficient Severe Combined Immunodeficiency (SCID): Effect of Discontinuation of PEG-ADA and Marrow Cytoreduction With Busulfan
Who cites it
27 citing papers in PubMed, 1 synthesis or guideline pooled it, 48 citations in OpenAlex.
- Newborn screening for severe combined immunodeficiency in the NHS newborn blood spot screening programme: a systematic review.Health technology assessment (Winchester, England) · 2026Pooled it
- Hematologic Cancer after Gene Therapy for Cerebral Adrenoleukodystrophy.The New England journal of medicine · 2024Trial
- Clinical, immunological, and molecular characteristics of severe combined immune deficiency in China.Human genetics · 2026Article
- Ex vivo long-term expansion of human hematopoietic stem and progenitor cells as a tool for modeling vector integration sites and clonality.Journal of translational medicine · 2026Article
- Current landscape of vector safety and genotoxicity after hematopoietic stem or immune cell gene therapy.Leukemia · 2025Review
- Exploring the potential of bacterial-derived EVs for targeted enzyme replacement therapy: mechanisms, applications, and future directions.Archives of microbiology · 2025Review
- Viral-based gene therapy clinical trials for immune deficiencies and blood disorders from 2013 until 2023 - an overview.Regenerative therapy · 2025Review
- Balancing efficacy and safety in lentiviral vector-mediated hematopoietic stem cell gene therapy.Molecular therapy : the journal of the American Society of Gene Therapy · 2025Article
- Targeting the Type I Interferon Pathway in Glomerular Kidney Disease: Rationale and Therapeutic Opportunities.Kidney international reports · 2025Review
- Preclinical lentiviral hematopoietic stem cell gene therapy corrects Pompe disease-related muscle and neurological manifestations.Molecular therapy : the journal of the American Society of Gene Therapy · 2024Article
- Viral and Non-Viral Systems to Deliver Gene Therapeutics to Clinical Targets.International journal of molecular sciences · 2024Review
- Improving access to gene therapy for rare diseases.Disease models & mechanisms · 2024Article
- A case of T-cell acute lymphoblastic leukemia in retroviral gene therapy for ADA-SCID.Nature communications · 2024Article
- Long-term and real-world safety and efficacy of retroviral gene therapy for adenosine deaminase deficiency.Nature medicine · 2024Article
- Tagged IDS causes efficient and engraftment-independent prevention of brain pathology during lentiviral gene therapy for Mucopolysaccharidosis type II.Molecular therapy. Methods & clinical development · 2023Article
- Successes and challenges in clinical gene therapy.Gene therapy · 2023Article
- Review
- Correcting inborn errors of immunity: From viral mediated gene addition to gene editing.Seminars in immunology · 2023Review
- Managing the immune microenvironment of osteosarcoma: the outlook for osteosarcoma treatment.Bone research · 2023Review
- Personalized hematopoietic stem cell transplantation for inborn errors of immunity.Frontiers in immunology · 2023Review
Corrections and comments
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Authors and funding
36 authors at 8 institutions in 2 countries.
Funding
Abstract
Patients lacking functional adenosine deaminase activity have severe combined immunodeficiency (ADA SCID), which can be treated with ADA enzyme replacement therapy (ERT), allogeneic hematopoietic stem cell transplantation (HSCT), or autologous HSCT with gene-corrected cells (gene therapy [GT]). A cohort of 10 ADA SCID patients, aged 3 months to 15 years, underwent GT in a phase 2 clinical trial between 2009 and 2012. Autologous bone marrow CD34+ cells were transduced ex vivo with the MND (myeloproliferative sarcoma virus, negative control region deleted, dl587rev primer binding site)-ADA gammaretroviral vector (gRV) and infused following busulfan reduced-intensity conditioning. These patients were monitored in a long-term follow-up protocol over 8 to 11 years. Nine of 10 patients have sufficient immune reconstitution to protect against serious infections and have not needed to resume ERT or proceed to secondary allogeneic HSCT. ERT was restarted 6 months after GT in the oldest patient who had no evidence of benefit from GT. Four of 9 evaluable patients with the highest gene marking and B-cell numbers remain off immunoglobulin replacement therapy and responded to vaccines. There were broad ranges of responses in normalization of ADA enzyme activity and adenine metabolites in blood cells and levels of cellular and humoral immune reconstitution. Outcomes were generally better in younger patients and those receiving higher doses of gene-marked CD34+ cells. No patient experienced a leukoproliferative event after GT, despite persisting prominent clones with vector integrations adjacent to proto-oncogenes. These long-term findings demonstrate enduring efficacy of GT for ADA SCID but also highlight risks of genotoxicity with gRVs. This trial was registered at www.clinicaltrials.gov as #NCT00794508.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.