This is a first-in-human, single-arm, open-label study evaluating the safety, tolerability, and preliminary efficacy of ALLO-329 in adults with autoimmune diseases: systemic lupus erythematosus (SLE) with and without renal involvement, idiopathic inflammatory myopathy (IIM), and systemic sclerosis (SSc).The purpose of this trial is to evaluate the safety and tolerability of ALLO-329, an allogeneic anti-CD19, anti-CD70 dual chimeric antigen receptor (CAR) T cell therapy, in adults with autoimmune disorders, provide initial evidence of biological activity and clinical response to the treatment and determine the recommended Phase 2 regimen (RP2R).
Adults ≥ 18 to < 70 years of age.
Adequate hematological function and liver, cardiac, and pulmonary function.
A highly sensitive urine pregnancy test or serum pregnancy test (for females of childbearing potential) negative at screening. All participants of childbearing potential must be willing to use a highly effective method of contraception for at least 12 months (6 months for males) after LD chemotherapy or ALLO-329 administration, whichever is later.
Signed and dated informed consent form.
Participants with active systemic bacterial, fungal, or viral infection requiring systemic treatment or a clinically significant active, opportunistic, chronic or recurrent infection.
Any active malignancy within 5 years prior to enrollment, except for adequately treated localized basal cell or squamous cell skin cancer, carcinoma in situ or low risk prostate cancer (Gleason score ≤ 6).
Prior treatment with CD19 or CD70 targeted therapy or any prior engineered cell therapy (e.g., CAR T therapy).
Clinically significant or unstable or uncontrolled acute or chronic disease (e.g., hypothyroidism and diabetes) not due to SLE/IIM/SSc.