Allogeneic UCB-derived CAR-T for B-ALL

Exclusion Criteria

• •Active central nervous system (CNS) involvement by B-ALL, defined as CNS-2 or CNS-3 status according to standard criteria.
• •History of another malignancy within 2 years prior to screening, except for adequately treated basal cell or squamous cell carcinoma of the skin, or carcinoma in situ of the cervix.
• •Patients who previously received CAR-T cell therapy and experienced Grade ≥4 cytokine release syndrome (CRS) or neurotoxicity are specifically excluded.
• •Treatment with any investigational or approved anti-B-ALL therapeutic agent within 5 half-lives prior to enrollment (excluding supportive care medications).
• •Radioimmunotherapy or radiotherapy within 8 weeks prior to enrollment.
• •Receipt of live attenuated vaccine within 4 weeks prior to screening.
• •Current or anticipated use of systemic corticosteroids at high dose (defined as a total cumulative dose equivalent to ≥60 mg dexamethasone or equivalent corticosteroid) within 4 weeks prior to lymphodepletion chemotherapy. Physiologic replacement doses, topical, inhaled, nasal, and ophthalmic corticosteroids are permitted.
• •Active acute or chronic graft-versus-host disease (GVHD) requiring systemic treatment within 4 weeks prior to CAR-T cell infusion.
• •Major surgical procedure within 3 months prior to screening.
• •Active CNS disorder or history of irreversible severe CNS toxicity from prior B-ALL therapy resulting in organic brain lesions or CNS dysfunction, including but not limited to seizure disorder, cerebrovascular accident, severe brain injuries, dementia, Parkinson's disease, cerebellar disease, organic brain syndrome, or psychosis.
• •History of hypertensive crisis or hypertensive encephalopathy within 3 months prior to screening.
• •Any uncontrolled cardiovascular disease within 6 months prior to enrollment, or any of the following:
• •* Ventricular or atrial arrhythmia ≥Grade 2
• •* Bradycardia ≥Grade 2
• •* Myocardial infarction
• •* Severe or unstable angina pectoris
• •* Symptomatic congestive heart failure
• •* Cerebrovascular accident or transient ischemic attack
• •* Pulmonary embolism
• •* Deep vein thrombosis
• •* Poorly controlled hypertension despite standard medical management
• •* Left ventricular ejection fraction (LVEF) \<45% as assessed by echocardiography or multigated acquisition (MUGA) scan at screening Pulmonary Exclusions
• •Any uncontrolled pulmonary disease within 6 months prior to enrollment, or any of the following:
• •* Pulmonary embolism
• •* Chronic obstructive pulmonary disease
• •* History of idiopathic pulmonary fibrosis, organizing pneumonia (e.g., bronchiolitis obliterans), drug-induced pneumonitis, or idiopathic pneumonitis
• •* Evidence of active pneumonia on chest computed tomography (CT) scan at screening
• •* Symptomatic or uncontrolled interstitial lung disease
• •* Clinically significant pulmonary function abnormalities Note: History of radiation pneumonitis/pulmonary fibrosis in a radiation field is permitted if asymptomatic.
• •Active bacterial, fungal, protozoal, or viral infection that is not adequately controlled despite appropriate therapy at the time of enrollment, or positive blood culture within 7 days prior to enrollment.
• •Known active infection with any of the following:
• •* Hepatitis B virus (HBV): Positive HBV surface antigen (HBsAg) or HBV core antibody (HBcAb) with detectable HBV DNA above the normal range
• •* Hepatitis C virus (HCV): Positive HCV antibody with detectable HCV RNA above the normal range
• •* Human immunodeficiency virus (HIV): Positive HIV antibody
• •* Human T-lymphotropic virus (HTLV): Positive HTLV antibody
• •* Treponema pallidum (syphilis): Positive T. pallidum antibody
• •* Cytomegalovirus (CMV): Positive CMV DNA by polymerase chain reaction (PCR)
• •Legally incapacitated individuals under guardianship or conservatorship.
• •Psychiatric or substance abuse disorders that would interfere with cooperation with the requirements of the study or ability to provide informed consent.
• •Any abnormal finding, medical condition, or laboratory test result during screening that, in the investigator's judgment, may jeopardize patient safety or interfere with study conduct or interpretation of results.
• •Any planned medical or surgical intervention that would interfere with the conduct of the study.
• •Contraindication to any medication that may be required during the study, including but not limited to lymphodepletion chemotherapy agents (fludarabine, cyclophosphamide) and medications for management of adverse reactions (e.g., tocilizumab for CRS management, corticosteroids for ICANS management).