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Active, not recruiting Phase 2 Interventional

Conditioning SCID Infants Diagnosed Early

ClinicalTrials.gov ID: NCT03619551

Public ClinicalTrials.gov record NCT03619551. 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.

ClinicalTrials.gov public records Last synced Oct 21, 2026, 1:13 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A Randomized Trial of Low Versus Moderate Exposure Busulfan for Infants With Severe Combined Immunodeficiency (SCID) Receiving TCRαβ+/CD19+ Depleted Transplantation: A Phase II Study by the Primary Immune Deficiency Treatment Consortium (PIDTC) and Pediatric Blood and Marrow Transplant Consortium (PBMTC)

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

The investigators want to study if lower doses of chemotherapy will help babies with SCID to achieve good immunity with less short and long-term risks of complications after transplantation. This trial identifies babies with types of immune deficiencies that are most likely to succeed with this approach and offers them transplant early in life before they get severe infections or later if their infections are under control. It includes only patients receiving unrelated or mismatched related donor transplants. The study will test if patients receiving transplant using either a low dose busulfan or a medium dose busulfan will have immune recovery of both T and B cells, measured by the ability to respond to immunizations after transplant. The exact regimen depends on the subtype of SCID the patient has. Donors used for transplant must be unrelated or half-matched related (haploidentical) donors, and peripheral blood stem cells must be used. To minimize the chance of graft-versus-host disease (GVHD), the stem cells will have most, but not all, of the T cells removed, using a newer, experimental approach of a well-established technology. Once the stem cell transplant is completed, patients will be followed for 3 years. Approximately 9-18 months after the transplant, vaccinations will be administered, and a blood test measuring whether your child's body has responded to the vaccine will be collected.

Study identification

NCT ID
NCT03619551
Recruitment status
Active, not recruiting
Study type
Interventional
Phase
Phase 2
Enrollment
56 participants

Conditions and interventions

Conditions

Interventions

Drug · Device

Eligibility (public fields only)

Age range
0 Years to 2 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
Oct 22, 2018 (Actual)
Primary completion
Dec 1, 2027 (Estimated)
Completion
Dec 1, 2028 (Estimated)
Last update posted
Oct 20, 2026

2018 – 2028

United States locations

U.S. sites
35
U.S. states
25
U.S. cities
34
Facility City State ZIP Site status
Univeristy of Alabama at Birmingham Birmingham Alabama 35294 —
Mayo Clinic Arizona and Phoenix Children's Hospital Phoenix Arizona 85016 —
Children's Hospital Los Angeles Los Angeles California 90027 —
UCLA Center for Health Sciences Los Angeles California 90095 —
Rady Children's Hospital, San Diego San Diego California 92123 —
University of California San Francisco Medical Center - Peds San Francisco California 94143 —
University of Colorado - Children's Hospital Aurora Colorado 80045 —
Children's National Medical Center Washington D.C. District of Columbia 20010 —
Shands HealthCare & University of Florida Gainesville Florida 32610 —
University of Miami/Jackson Memorial Hospital Miami Florida 33136 —
All Children's Hospital St. Petersburg Florida 33701 —
Children's Healthcare of Atlanta at Egleston Atlanta Georgia 30329 —
Comer Children's Hospital/University of Chicago Medicine Chicago Illinois 60637 —
Children's Hospital / LSUHSC New Orleans Louisiana 70118 —
Dana Farber Cancer Institute - Peds Boston Massachusetts 02115 —
The University of Michigan Ann Arbor Michigan 48109 —
Helen DeVos Children's Grand Rapids Michigan 49503 —
University of Minnesota Blood and Marrow Transplant Program - Pediatrics Minneapolis Minnesota 55455 —
The Children's Mercy Hospitals and Clinics Kansas City Missouri 64108 —
Nebraska Medicine Omaha Nebraska 68198 —
Hackensack University Medical Center Hackensack New Jersey 07601 —
Morgan Stanley Children's Hospital of New York-Presbyterian - Columbia University Medical Center New York New York 10032 —
Cohen Children's Medical Center Queens New York 11040 —
Levine Children's Hospital Charlotte North Carolina 28203 —
Duke University Medical Center; Pediatric Blood and Marrow Transplant Durham North Carolina 27705 —
Cincinnati Children's Hospital Medical Center Cincinnati Ohio 45229 —
Oregon Health and Science University Portland Oregon 97239-3098 —
Children's Hospital of Philadelphia Philadelphia Pennsylvania 19104 —
Children's Hospital of Pittsburgh of UPMC Pittsburgh Pennsylvania 15224 —
Vanderbilt University Medical Center Nashville Tennessee 37232 —
Children's Medical Center Dallas Dallas Texas 75235 —
Utah Blood and Marrow Transplant Program-Peds Salt Lake City Utah 84112 —
Fred Hutchinson Cancer Research Center Seattle Washington 98109 —
University of Wisconsin Hospital and Clinics Madison Wisconsin 53792 —
Children's Hospital of Wisconsin Milwaukee Wisconsin 53226 —

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 3 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT03619551, 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 Oct 20, 2026 · Synced Oct 21, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT03619551 live on ClinicalTrials.gov.

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