Effect of Autologous Cord Blood Mononuclear Cells for Treatment of Bronchopulmonary Dysplasia in Extremely Preterm Neonates: a Non-Randomized Case-Control Trial Study
试验速览
- 阶段
- 3 期
- 发起方
- 入组人数
- 76
- 试验地点
- 2
- 主要终点
- Rate of mortality or ratio of severe BPD
研究概览
简要总结
This is a non-randomized, case-controlled trial that evaluates the efficacy of autologous cord blood mononuclear cells(ACBMNC) infusion as a Treatment for BPD. The results of this trial will provide valuable clinical evidence for recommendations on the treatment of BPD in extremely preterm infants. Informed consent before birth is signed. In this prospective clinical trial, preterm neonates less than 28 weeks who previously stored ACBMNC and then suffer BPD will be assigned to be ACBMNC infusion group, while those who do not previously stored ACBMNC or then refuse ACBMNC infusion and suffer BPD will be assigned to be control group. In the ACBMNC infusion group, when BPD occurred, the pre-stored ACBMNC will be removed and rewarmed, and then ACBMNC(5×107 cells /kg) will be intravenously injected within 24 hours. The control group receives standardized treatment without special treatment. The total number of participants is 76 and the same in both groups. The primary outcome is the rate of mortality or ratio of severe BPD at 36 weeks of postmenstrual age or discharge home. The secondary outcomes will include other common preterm complication rate and the number of hospitalizations due to pneumonia within 1 year of postmenstrual age.
详细描述
Study design and settings:
This is a non-randomized, case-controlled trial that evaluates the efficacy of autologous cord blood mononuclear cells(ACBMNC) infusion as a Treatment for BPD. Informed consent before birth is signed. Preterm infants in the ACBMNC infusion group will have their umbilical cord blood collected after birth. Umbilical cord blood was collected into a collection bag after delivery and labeled. The collection bag was placed in a 4° refrigerator for refrigeration and sent to the Guangdong Province umbilical cord blood Bank. ACBMNC will be separated and preserved with liquid nitrogen. The total content of umbilical cord blood cells, the number of mononuclear cells per ml and the volume before and after separation were provided immediately for the later calculation of the total volume of infusion. In this prospective clinical trial, preterm neonates less than 28 weeks who previously stored ACBMNC and then suffer BPD will be assigned to be ACBMNC infusion group, while those who do not previously stored ACBMNC or then refuse ACBMNC infusion and suffer BPD will be assigned to be control group. In the ACBMNC infusion group, when BPD occurred, the pre-stored ACBMNC will be removed and rewarmed, and then ACBMNC(5×107 cells /kg) will be intravenously injected within 24 hours. The control group receives standardized treatment without special treatment. The total number of participants is 76 and the same in both groups. The primary outcome is the rate of mortality or ratio of severe BPD at 36 weeks of postmenstrual age or discharge home. The secondary outcomes will include other common preterm complication rate and the number of hospitalizations due to pneumonia within 1 year of postmenstrual age.
Trial treatment methods:
Informed consent before birth will be signed by the parents. All premature infants included in the study received standardized treatment after admission to the NICU. In the ACBMNC infusion group, when BPD occurred, the pre-stored ACBMNC will be removed and rewarmed, and then ACBMNC(5×107 cells /kg) will be intravenously injected within 24 hours. The control group receives standardized treatment without special treatment.
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Double (Care Provider, Investigator)
盲法说明
A hospital ethics committee reviewed the study data during the trials. None of them were involved in the study or aware of the treatment-group assignments of the infants. Nurses and physicians staff conducted the infusion are not aware of the treatment assignment, and these individuals had no contact with the staff who collected and analyzed the patients data. The parents are aware of the assignment.
入排标准
- 年龄范围
- — 至 28 Weeks（Child）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •1.born at study hospital;
- •singleton birth;
- •less than 28 weeks GA
- •4.Signed informed consent obtained;
- •Umbilical cord blood collection and testing qualified; 6.Diagnosed with BPD
排除标准
- •with severe congenital abnormalities;
- •2.with maternal clinical chorioamnionitis
- •the mother was positive for hepatitis B (HBsAg and/or HBeAg) or C virus (anti-HCV), syphilis, HIV (anti-HIV-1 and -2) or IgM against cytomegalovirus, rubella, toxoplasma and herpes simplex virus.
研究组 & 干预措施
ACBMNC infusion group
Those assigned to the ACBMNC group will receive intravenous autologous cord blood mononuclear cells infusion. Cell dose for all patients was targeted at 5×107 cells per kilogram.
干预措施: autologous cord blood mononuclear cells (Biological)
control group
The control group received standardized treatment without special treatment.
结局指标
主要结局
Rate of mortality or ratio of severe BPD
时间窗: 36 weeks of postmenstrual age or discharge home whichever comes first.
Rate of mortality or ratio of severe BPD at discharge or corrected gestational age at 36 weeks
次要结局
- The number of hospitalizations(1 or 2 year of postmenstrual age)
- Incidence of other preterm complications(36 weeks of postmenstrual age or the discharge home whichever comes first.)
研究者
yang jie
Professor
Guangdong Women and Children Hospital