Pilot Trial of Allogeneic Blood or Marrow Transplantation for Primary Immunodeficiencies

Summary

Background: Allogeneic blood or marrow transplant is when stem cells are taken from one person s blood or bone marrow and given to another person. Researchers think this may help people with immune system problems. Objective: To see if allogeneic blood or bone marrow transplant is safe and effective in treating people with primary immunodeficiencies. Eligibility: Donors: Healthy people ages 4 or older Recipients: People ages 4-75 with a primary immunodeficiency that may be treated with allogeneic blood or marrow transplant Design: Participants will be screened with medical history, physical exam, and blood tests. Participants will have urine tests, EKG, and chest x-ray. Donors will have: Bone marrow harvest: With anesthesia, marrow is taken by a needle in the hipbone. OR Blood collection: They will have several drug injections over 5-7 days. Blood is taken by IV in one arm, circulates through a machine to remove stem cells, and returned by IV in the other arm. Possible vein assessment or pre-anesthesia evaluation Recipients will have: Lung test, heart tests, radiology scans, CT scans, and dental exam Possible tissue biopsies or lumbar puncture Bone marrow and a small piece of bone removed by needle in the hipbone. Chemotherapy 1-2 weeks before transplant day Donor stem cell donation through a catheter put into a vein in the chest or neck Several-week hospital stay. They will take medications and may need blood transfusions and additional procedures. After discharge, recipients will: Remain near the clinic for about 3 months. They will have weekly visits and may require hospital readmission. Have multiple follow-up visits to the clinic in the first 6 months, and less frequently for at least 5 years.

Timeline

Start

2015-11-19

Primary completion

2031-12-31

Completion

2036-12-31

Publications

• Background Bashey A, Zhang X, Sizemore CA, Manion K, Brown S, Holland HK, Morris LE, Solomon SR. T-cell-replete HLA-haploidentical hematopoietic transplantation for hematologic malignancies using post-transplantation cyclophosphamide results in outcomes equivalent to those of contemporaneous HLA-matched related and unrelated donor transplantation. J Clin Oncol. 2013 Apr 1;31(10):1310-6. doi: 10.1200/JCO.2012.44.3523. Epub 2013 Feb 19.
• Background Mariotti J, Taylor J, Massey PR, Ryan K, Foley J, Buxhoeveden N, Felizardo TC, Amarnath S, Mossoba ME, Fowler DH. The pentostatin plus cyclophosphamide nonmyeloablative regimen induces durable host T cell functional deficits and prevents murine marrow allograft rejection. Biol Blood Marrow Transplant. 2011 May;17(5):620-31. doi: 10.1016/j.bbmt.2010.11.029. Epub 2010 Dec 3.
• Background Kang E, Gennery A. Hematopoietic stem cell transplantation for primary immunodeficiencies. Hematol Oncol Clin North Am. 2014 Dec;28(6):1157-70. doi: 10.1016/j.hoc.2014.08.006. Epub 2014 Sep 16.
• Xue E, Das S, Choo-Wosoba H, Dimitrova D, Hyder MA, Flomerfelt FA, Dawson B, Telford W, Upadhyaya KD, Rechache K, Kanakry CG, Kanakry JA. Frequency, kinetics, and clinical significance of HHV-6 DNAemia after PTCy-based hematopoietic cell transplant. Blood Adv. 2026 Jul 17:bloodadvances.2025018166. doi: 10.1182/bloodadvances.2025018166. Online ahead of print.

Drugs

Indications