This is a Phase I/II, open label, single center study to assess the safety and tolerability of EXG34217 in bone marrow failure patients with telomere biology disorders.
This is a Phase I/II, open label study in up to 12 subjects with telomere biology disorders with bone marrow failure. The study is open to all participants regardless of gender or ethnicity. Subjects who are enrolled but not evaluable will be replaced. Subjects will sign a consent form prior to any study related procedure and will complete baseline screening assessments. Subjects for this study will not require any preparative regimen such as chemotherapy or radiation. The study will be conducted in three parts * Peripheral blood mononuclear cells (PBMNCs) collection; mobilization and apheresis, * Ex vivo cell processing * Processed cell infusion and post-infusion safety monitoring, * Follow-up (Week 2, 3,4,5, Months 1, 2,3,4,5,6,9 and 12)
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
12
Single infusion
Cincinnati Children's Hospital
Cincinnati, Ohio, United States
Number of participants with adverse events -Safety by Incidence of Treatment-Emergent Adverse Events
Number of participants with treatment-related adverse events as assessed by CTCAE v4.03. Incidence and nature of adverse events, vital signs, weight.
Time frame: Multiple times for the duration of the study (baseline through Month 12)
Number of participants with a change in in physical examination
Physical examination changes General appearance ,Head, eyes, ears, nose, and throat, Respiratory, Cardiovascular, Musculoskeletal, Abdomen, Neurologic, Extremities, Dermatologic, Lymphatic)
Time frame: Multiple times for the duration of the study (baseline through Month 12)
Number of participants with a change in Electrocardiography (ECG)
ECG (standard digital 12-lead in singlicate)
Time frame: Multiple times for the duration of the study (baseline through Month 12)
Number of participants with a change in clinical laboratory evaluations
Changes in clinical laboratory evaluations (Hematology, Blood chemistry, Coagulation, and Urinalysis)
Time frame: Multiple times for the duration of the study (baseline through Month 12)
Number of participants with a change of Immunogenicity
Change in Antibody against virus vector and transgene
Time frame: Multiple times for the duration of the study (baseline through Month 12)
Number of participants with a change in telomere length
Change in telomere length in any peripheral blood cells
Time frame: Screening, Month1,3,6 and 12
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Number of participants with improvement of blood counts.
Blood counts: neutrophils,platelets, or hemoglobin
Time frame: Multiple times for the duration of the study (baseline through Month 12)