Study of Therapeutic Efficacy of Anti-CD19 CAR-T Cells in Children With Refractory ANCA-Associated Vasculitis
试验速览
- 阶段
- 不适用
- 状态
- 撤回
- 发起方
- 入组人数
- 12
- 试验地点
- 1
- 主要终点
- The safety of CAR-T cell in refractory childhood-onset ANCA-Associated Vasculitis
研究概览
简要总结
This is an investigator-initiated trial aimed at assessing the safety and efficacy of anti-CD19 CAR-T cells in the treatment of childhood-onset refractory ANCA-Associated Vasculitis.
详细描述
The anti-neutrophil cytoplasmic antibody (ANCA) associated vasculitis （AAV ）is one of the most devastating and potentially fatal autoimmune diseases, characterized by involvement of small blood vessels (arterioles, tiny arteries, tiny static veins, and capillaries) and the presence of ANCA. The disease lead to extensive damage in multiple organs and systems,such as pulmonary hemorrhage and rapidly progressive glomerulonephritis (RPGN),ultimately resulting in disability and even death.Children with AAV are particularly at risk of organ damage, especially to the kidneys, and tend to more serious than that in adults.
Currently, the primary treatment for AAV relies on glucocorticoids and immunosuppressants to alleviate symptoms. However, due to the absence of a curative treatment, patients often require lifelong medication. In recent years, biological agents such as rituximab have been introduced for the treatment of AAV, but still cannot completely eliminate autoimmune B cells in the bone marrow, leading to unsatisfactory overall outcomes. Furthermore, stopping the drugs can lead to relapse, and there is still no cure for AAV, leaving patients facing the challenges of lifelong medication and an incurable disease.
Since 2019, CAR-T cell therapy has been successfully applied to autoimmune diseases. Clinical studies have demonstrated that targeted CD19 CAR-T cells hold significant therapeutic potential for SLE. These cells effectively slow down the pathological progression of SLE and can also effectively treat severe cases. Furthermore, targeted CD19 CAR-T cells are also expected to restore the immune system in SLE patients, potentially allowing them to discontinue lifelong medication and avoid serious long-term side effects of drugs like hormones and immunosuppressants. Studies have reported that CAR-T has a good therapeutic effect on a variety of autoimmune diseases such as systemic sclerosis and idiopathic inflammatory dermatomyositis.The purpose of this study is to assess the safety and efficacy of the anti-CD19 CAR-T cells in the treatment of childhood-onset refractory AAV.
研究设计
- 研究类型
- Observational
- 观察模型
- Case Only
- 时间视角
- Prospective
入排标准
- 年龄范围
- 5 Years 至 25 Years（Child, Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Age:5-25 years old(including threshold);
- •Diagnosed with AAV according to the 2022EULAR/ACR AAV classification criteria；despite of the Treatment with glucocorticoids (more than 1mg/kg/ day), cyclophosphamide, and rituximab for at least 3 months, still cannot achieve sustained response or disease recurred after response; Or use glucocorticoid combined with cyclophosphamide/rituximab plus more than one of the other immunosuppressants (including azathioprine, moxophenolate, methotrexate, leflunomide, tacrolimus, cyclosporine, beliuzumab, etc.) ≥3months，still failed to achieve sustained remission or relapsed after remission; Or meet the diagnostic criteria for severe vasculitis, clinical routine treatment is ineffective, the benefit is judged by the investigator to outweigh the risk, and the patient or guardian has fully informed consent, can be considered for inclusion。
- •patient <18 years old：PVAS≥15（total 63）；≥18 years old: BVAS≥15(total 63)
- •The functions of important organs are basically normal: Cardiac function: Left ventricular ejection fraction (LVEF) ≥55% with no obvious abnormality in electrocardiogram; Renal function: eGFR≥30ML/min/1.73m2； Liver function: Asparagus cochinchinensis transase (AST) and Alanine Aminotransferase (ALT)≤3.0 ULN, Total Bilirubin (TBIL) in serum ≤2.0×ULN; Lung function: No serious lung lesions, SpO2≥92%;
- •Met the standards of leukapheresis or intravenous blood collection, No contraindication for cell collection;
- •Negative pregnancy test for female Subjects of childbearing age, agree to take effective contraceptive measures the first year after CAR-T infusion;
- •Participants or their guardians agrees to participate in the clinical trial and sign the informed consent form which indicating that he/she understands the purpose and procedure of the clinical trial and is willing to participate in the study.
排除标准
- •Received CAR T cell therapy previously;
- •Central nervous system (CNS) disease: CNS neurolupus requires intervention within 60 days);
- •Pulmonary hemorrhage that need for pulmonary ventilation support for more than 1 week;
- •Have a history of congenital heart disease or acute myocardial infarction within 6 months prior to screening; Or severe arrhythmias (including multisource frequent supraventricular tachycardia, ventricular tachycardia, etc.); Or combined with moderate to massive pericardial effusion, serious myocarditis, etc; Or patients with unstable vital signs who need hypertensive drugs；
- •Suffer from other diseases that require long-term use of glucocorticoid or high-dose of immunosuppressive agents;
- •Uncontrollable infection, or active infection that requires systemic treatment within 1 week prior to screening；
- •History of organ transplantation or hematopoietic stem cell transplantation, or ≥Grade 2 GVHD within 2 weeks prior to screening；
- •Hepatitis B surface antigen (HBsAg) or hepatitis B core antibody (HBcAb) positive and peripheral blood hepatitis B virus (HBV) DNA titer greater than the normal reference value range; Or hepatitis C virus (HCV) antibody positive and peripheral blood hepatitis C virus (HCV) RNA titer greater than the normal reference value range; Or positive for human immunodeficiency virus (HIV) antibodies; Or syphilis test positive; Or cytomegalovirus (CMV) DNA test positive;
- •Received live vaccine within 4 weeks before screening;
- •Tested positive in Blood pregnancy test；
- •Previous or concurrent malignancy；
- •Patients who participated in other clinical study within 3 months prior to enrollment;
- •Any other conditions that the investigators deem it unsuitable for the study
结局指标
主要结局
The safety of CAR-T cell in refractory childhood-onset ANCA-Associated Vasculitis
时间窗: 3 months and 6 months
The number of occurrence and proportion of adverse events and serious adverse events that occurred
次要结局
- Autoantibody detection(24 months)
- The efficiency of CAR-T cell in refractory childhood-onset AAV(3 months)
- Cellular kinetics(6 months)
- Duration of disease response (DOR)(24 months)
- The efficiency of CAR-T cell in refractory childhood-onset AAV(3 months and 6 months)
研究者
Mao Jianhua
professor
The Children's Hospital of Zhejiang University School of Medicine