Safety of Autologous Stem Cell Treatment for Traumatic Brain Injury in Children
试验速览
- 阶段
- 1 期
- 状态
- 已完成
- 入组人数
- 10
- 主要终点
- neurologic events [seizures, change in Glasgow coma scale (GCS), cerebral vascular accident (CVA)]
研究概览
简要总结
The purpose of this study is to determine if bone marrow progenitor cell (BMPC) autologous transplantation in children after isolated traumatic brain injury is safe and will improve functional outcome.
详细描述
Traumatic brain injury (TBI) contributes to 50% of all trauma deaths. The mortality rate for children following severe TBI (Glasgow Coma Scale < 9) ranges from 14-24%. There is currently no therapy to reverse the primary injury associated with TBI. Bone marrow precursor cells (BMPC) or bone marrow mononuclear cellular fractions of bone marrow contain mesenchymal stem cells (MSC) and hematopoetic stem cells (HSC). These cells are a component of bone marrow that preferentially migrate to the site of brain injury and differentiate into neurons and cell supporting elements, improving functional outcome in animals. The primary objective of this study is to determine if BMPC harvest and autologous transplantation is safe in children after TBI. The secondary objective is to determine if late functional outcome is improved with BMPC autologous transplantation compared to age and severity matched concomitant controls. Safety will be determined by monitoring cerebral and systemic hemodynamics during harvest and transplantation, neurologic events (seizure, change in GCS, stroke), local site inflammation/injury, and secondary organ injury. Late outcomes will be determined using age-corrected Glasgow Outcome Scores, and a battery of functional outcome measures. In vitro, an aliquot of cells harvested from patients will be studied for labeling with magnetodendrimers as a feasibility study, and these cells will not be reinfused into the patients. The primary endpoint is to assess the safety of autologous BMPC harvest/transplantation in the acute injury phase (hospital stay) and the secondary endpoint is to assess efficacy through 1 and 6 month post-injury follow-up. The rationale for the use of autologous BMPC transplantation is based on a large volume of in vitro and in vivo animal data (see background and significance section). The rationale for using children as the primary population is that children have a greater neurologic plasticity with a unique injury pattern when compared to adults. Children are more likely to have isolated TBI that is more diffuse and less likely to be secondary to extra-axial fluid collections. Patients aged 5-14 years old with GCS of 5-8 will be considered for enrollment into the study. Within 24-36 hours of injury, enrolled patients will undergo bone marrow harvest/BMPC separation and re-infusion. Daily monitoring of the safety outcomes measures and long term neurologic outcomes will be performed. This study should determine if bone marrow harvest, BMPC separation, and reinfusion is safe in children after severe TBI.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 5 Years 至 14 Years（Child）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Between 5 and 14 years of age on the day of injury
- •Hospital admission Glasgow coma score between 5 and 8
- •Initial injury occurring less than 24 hours prior to consent
排除标准
- •Known history of:
- •Previous brain injury
- •Developmental delay
- •Neurologic impairment and/or deficit
- •Seizure disorder requiring anti-convulsant therapy
- •Renal disease or altered renal function as defined by serum creatinine > 1.5 mg/dL at admission
- •Hepatic disease or altered liver function as defined by SGPT > 150 U/L, and/or T. bilirubin > 1.3 mg/dL at admission
- •Immunosuppression as defined by WBC < 3 (10x3) at admission
- •Obliteration of perimesencephalic cistern on initial head CT/MRI suggesting prolonged hypoxic ischemic insult
- •Initial hospital ICP > 40
- •Hemodynamic instability at the time of consent defined as ongoing fluid resuscitation and/or requirement for inotropic support to maintain MAP at or above normals for age - does not include CPP based inotropic support
- •Uncorrected coagulopathy at the time of consent defined as INR > 1.4; PTT > 35 sec; PLT < 100,000; fibrinogen < 100 g/dL
- •Unstable pelvic fractures defined as requiring operative fixation to manage
- •Pulmonary contusions defined as a chest x-ray with non-anatomic opacification and/or PaO2:FIO2 ratio < 250 associated with the mechanism or injury
- •Solid or hollow visceral injury of the abdomen and/or pelvis as diagnosed by CT or other imaging
- •Spinal cord injury as diagnosed by CT or MR imaging or by clinical findings.
- •Persistent hypoxia defined as SaO2 < 94% for > 30 minutes occurring at any time from hospital admission to time of consent
- •Positive urine pregnancy test
- •Participation in an intervention study
- •Unwillingness to return for follow-up visits
研究组 & 干预措施
I
single arm study
干预措施: Autologous bone marrow precursor cell harvest and transplant (Drug)
结局指标
主要结局
neurologic events [seizures, change in Glasgow coma scale (GCS), cerebral vascular accident (CVA)]
时间窗: 12 hours post cellular product infusion, up to 21 days post infusion
infectious morbidity
时间窗: up to 21 days post cellular product infusion
secondary organ injury
时间窗: up to 21 days post cellular product infusion
次要结局
未报告次要终点
研究者
Charles Cox
Professor
The University of Texas Health Science Center, Houston