RECRUITING Phase 1 ClinicalTrials.gov

Stem Cell Mobilization and Apheresis for Life-threatening Blood Disorders

Sponsor: St. Jude Children's Research Hospital • ClinicalTrials.gov ID: NCT07585136

Registry updated: 2026-10-06

Recruiting for Similar Conditions?

Sponsors are looking for patients like you. See if you qualify for compensated research studies.

Description

The purpose of this study is to investigate mobilization and collection of HSPCs in patients with bone marrow failure syndromes (BMFS) using granulocyte-colony stimulating factor (otherwise known as Filgrastim) with plerixafor to demonstrate safety and feasibility of collecting HSPCs to advance gene therapy. Primary objective: \- To characterize the safety of Filgrastim plus plerixafor in participants with life threatening blood disorders as determined by the incidence of adverse events (AEs). Secondary Objectives: * To measure the mobilization effects of Filgrastim plus plerixafor in the peripheral blood in participants as determined by peak peripheral blood CD34+ counts. * To characterize the feasibility of HSPC mobilization using Filgrastim plus plerixafor as determined by peripheral blood CD34+ counts. * To estimate efficacy of Filgrastim plus plerixafor for HSPC mobilization and apheresis collection in participants as determined by the yield of CD34+ cells (CD34+ cells/kg).

Interventions

Filgrastim (Drug)
Administered twice daily dose starting on day 1 for 5 days.
Plerixafor (Drug)
Administered on day 5 via IV.
Leukapheresis (Procedure)
Peripheral venous access or through a central venous catheter approximately 4-5 hours after the dose of plerixafor is given.

Eligibility criteria

Inclusion Criteria: * Participants with a bone marrow failure syndrome with an identified genetic cause willing to donate autologous HSPCs for advancing gene therapy * Age ≥ 18 years - 25 years * The following hematological parameters need to be met (regardless of transfusion or growth factor support) * Hb \> 8 g/dL * ANC \> 500/mm3 * Platelet \> 30,000/mm3 * Bone marrow evaluation within the preceding 6 months prior to mobilization and apheresis * Participants should either have a central venous catheter (CVC) in place, be able to undergo apheresis without requiring a CVC, or agree to having a temporary apheresis catheter placed * Karnofsky score \>80 * Negative serologic tests for syphilis, hepatitis B and C, HIV, and HTLV-1/II * Female participants of childbearing age should have a negative serum pregnancy test within one week of beginning Filgrastim and plerixafor administration Exclusion Criteria: * Participant with sickle cell disease * Participant who has had a prior autologous or allogeneic HSCT * Active viral, bacterial, fungal, or parasitic infection * Total bilirubin \>2.5x ULN or transaminases \>5x ULN * Moderate or severe renal failure defined as serum/plasma creatinine \>1.5 mg/dL and an estimated glomerular filtration rate (eGFR) \< 60 mL/min/1.73 m2 based on the CKD-Epi equation or the St. Jude equation * Diagnosis of MDS or other hematologic malignancy * History of malignancy * Known allergy to or contraindication for Filgrastim or plerixafor administration, or medications routinely administered during apheresis * Splenomegaly (size greater than upper limit of normal on examination) * Any disease or concomitant process that is not compatible with the study as per investigator opinion * Concomitant treatment with alternative investigational agent or participation in another clinical trial with an investigational drug within 5 half-lives of the investigational agent * Unwillingness to use a highly effective method of contraception for 1 month after plerixafor or GCSF * Pregnancy * Inability or unwillingness of research participant to give written informed consent.

Conditions

Bone Marrow Failure Syndrome

Locations

Saint Jude Children's Research Hospital — Memphis, Tennessee, United States

Partner with Nurenyx

Showcase your study to thousands of motivated patients matching your criteria.

Learn More

Official Source

Data sourced from ClinicalTrials.gov, a service of the U.S. National Institutes of Health.

View Official Record

Accelerate Your Clinical Trial Recruitment