This is a long-term rollover follow-up study for Phase I/II study (Protocol EXG-US-01).
Patients who received EXG34217 treatment and had at least one follow-up visit (Month 1, 3, 6, or 12) in Study EXG-US-01 will be eligible for this rollover study. Patient will sign a consent form prior to any study related procedure. This study is to add additional follow-up assessments up to 6 years after EXG34217 treatment. This study does not have additional intervention. Additional visits will be every 6 months in the first 3 years and once a year for two years.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
SUPPORTIVE_CARE
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
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: Change from Baseline Systolic Blood Pressure at Month 18, 24,30,36,42,48,60 and 72
umber 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: Change from Baseline Systolic Blood Pressure at Month 18, 24,30,36,42,48,60 and 72
Number of participants with a change in Electrocardiography (ECG)
ECG (standard digital 12-lead in singlicate)
Time frame: Change from Baseline Systolic Blood Pressure at Month 18, 24,30,36,42,48,60 and 72
Number of participants with a change in clinical laboratory evaluations
Changes in clinical laboratory evaluations (Hematology, Blood chemistry, Coagulation, and Urinalysis)
Time frame: Change from Baseline Systolic Blood Pressure at Month 18, 24,30,36,42,48,60 and 72
Number of participants with a change of Immunogenicity
Change in Antibody against virus vector and transgene
Time frame: Change from Baseline Systolic Blood Pressure at Month 18, 24,30,36,42,48,60 and 72
Number of participants with a change in telomere length
Change in telomere length in any peripheral blood cells
Time frame: Change from Baseline Systolic Blood Pressure at Month 18, 24,30,36,42,48,60 and 72
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Number of participants with improvement of blood counts.
Blood counts: neutrophils,platelets, or hemoglobin
Time frame: Change from Baseline Systolic Blood Pressure at Month 18, 24,30,36,42,48,60 and 72