Muscle-specific tyrosine kinase (MuSK) myasthenia gravis (MG) is a rare but potentially severe disease, in which patients develop pathogenic autoantibodies that specifically target the MuSK protein in the neuromuscular junction. This phase 1 study is being conducted to evaluate the safety of various dosing regimens of an investigational cell therapy, MuSK-CAART, that can be given to patients with anti-MuSK antibody positive Myasthenia Gravis (MuSK MG), who have active disease. Various dosing regimens of MuSK-CAART alone, in combination with cyclophosphamide (CY), and in combination with CY and fludarabine (FLU) will be evaluated. Treatment with MuSK-CAART may potentially lead to complete and durable remission of disease.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
7
Intravenous infusion of MuSK-CAART at different doses. Subjects may also receive MuSK-CAART following pre-treatment with CY, or CY plus FLU.
UC Irvine, Department of Neurology
Orange, California, United States
UC Davis, Department of Neurology
Sacramento, California, United States
University of Kansas Medical Center
Kansas City, Kansas, United States
Oregon Health & Science University (OHSU)
Portland, Oregon, United States
Houston Methodist Hospital
Houston, Texas, United States
Adverse events
Incidence of adverse events (AEs), including dose-limiting toxicities (DLTs) and AEs that are related to MuSK-CAART.
Time frame: 3 months
Total MuSK-CAART positive cells
Total MuSK-CAART positive cells for each manufacturing run.
Time frame: Baseline
Percent of CAAR-transduced cells
Percent of total cells for infusion that are CAAR (Chimeric Autoantibody Receptor)-transduced cells.
Time frame: Baseline
Cellular kinetics profile of MuSK-CAART
Cellular kinetics profile of MuSK-CAART after infusion.
Time frame: Up to 36 months
Change in MuSK autoantibody titer
Change in MuSK autoantibody titer compared to pre-infusion visit by clinically validated assay.
Time frame: Up to 36 months
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