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审核状态: Project audit state: |
通过审核 Successful |
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注册号: Registration number: |
ChiCTR2600123177 |
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最近更新日期: Date of Last Refreshed on: |
2026-04-22 11:51:38 |
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注册时间: Date of Registration: |
2026-04-22 00:00:00 |
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注册号状态: |
预注册 |
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Registration Status: |
Prospective registration |
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注册题目: |
基于CRISPR/Cas12a的母体mcf-DNA超灵敏数字PCR检测预测新生儿早发性败血症 |
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Public title: |
Ultrasensitive Digital PCR Detection of Maternal MCF-DNA Based on CRISPR/Cas12a for Predicting Early-Onset Neonatal Sepsis |
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注册题目简写: |
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English Acronym: |
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研究课题的正式科学名称: |
基于CRISPR/Cas12a的母体mcf-DNA超灵敏数字PCR检测预测新生儿早发性败血症 |
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Scientific title: |
Ultrasensitive Digital PCR Detection of Maternal MCF-DNA Based on CRISPR/Cas12a for Predicting Early-Onset Neonatal Sepsis |
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研究课题代号(代码): Study subject ID: |
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在二级注册机构或其它机构的注册号: The registration number of the Partner Registry or other register: |
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申请注册联系人: |
康莉华 |
研究负责人: |
康莉华 |
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Applicant: |
Lihua Kang |
Study leader: |
Lihua Kang |
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申请注册联系人电话: Applicant telephone: |
+86 18008312259 |
研究负责人电话:
Study leader's |
+86 23 60354459 |
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申请注册联系人传真 : Applicant Fax: |
研究负责人传真: Study leader's fax: |
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申请注册联系人电子邮件: Applicant E-mail: |
82864898@qq.com |
研究负责人电子邮件: Study leader's E-mail: |
82864898@qq.com |
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申请单位网址(自愿提供): Applicant website(voluntary supply): |
研究负责人网址(自愿提供): Study leader's website(voluntary supply): |
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申请注册联系人通讯地址: |
重庆市渝北区龙山路120号 |
研究负责人通讯地址: |
重庆市渝北区龙山路120号 |
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Applicant address: |
No. 120 Longshan Road, Yubei District, Chongqing |
Study leader's address: |
No 120 Longshan Road, Yubei District, Chongqing. |
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申请注册联系人邮政编码: Applicant postcode: |
研究负责人邮政编码: Study leader's postcode: |
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申请人所在单位: |
重庆市妇幼保健院 |
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Applicant's institution: |
Chongqing Health Center for Women and Children |
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研究负责人所在单位: |
重庆市妇幼保健院 |
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Affiliation of the Leader: |
Chongqing Health Center for Women and Children |
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是否获伦理委员会批准: |
是 |
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Approved by ethic committee: |
Yes |
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伦理委员会批件文号: Approved No. of ethic committee: |
(2026)伦审(科)031号 |
伦理委员会批件附件: Approved file of Ethical Committee: |
查看附件View |
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批准本研究的伦理委员会名称: |
重庆市妇幼保健院医学伦理委员会 |
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Name of the ethic committee: |
Ethics Committee of Chongqing Health Center for Women and Children |
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伦理委员会批准日期: Date of approved by ethic committee: |
2026-03-12 00:00:00 | ||
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伦理委员会联系人: |
贺凌云 |
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Contact Name of the ethic committee: |
Lingyun He |
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伦理委员会联系地址: |
重庆市渝北区龙山路120号 |
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Contact Address of the ethic committee: |
No 120 Longshan Road, Yubei District, Chongqing. |
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伦理委员会联系人电话: Contact phone of the ethic committee: |
+86 23 63316835 |
伦理委员会联系人邮箱: Contact email of the ethic committee: |
hly.1023@163.com |
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研究实施负责(组长)单位: |
重庆市妇幼保健院 |
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Primary sponsor: |
Chongqing Health Center for Women and Children |
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研究实施负责(组长)单位地址: |
重庆市渝北区龙山路120号 |
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Primary sponsor's address: |
No 120 Longshan Road, Yubei District, Chongqing. |
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试验主办单位(项目批准或申办者): Secondary sponsor: |
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经费或物资来源: |
自筹 |
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Source(s) of funding: |
Raise independently |
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研究疾病: |
新生儿败血症 |
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Target disease: |
Neonatal sepsis |
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研究疾病代码: |
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Target disease code: |
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研究类型: |
观察性研究 |
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Study type: |
Observational study |
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研究所处阶段: |
其它 | ||||||||||||||||||||||
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Study phase: |
N/A |
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研究设计: |
队列研究 |
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Study design: |
Cohort study |
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研究目的: |
本项目基于课题组前期已建立的 CRISPR/Cas12a 超灵敏 PCR 检测平台,围绕母体血浆中微量微生物游离 DNA(mcf-DNA)的识别问题,探索该平台在新生儿早发性败血症(EOS)产前风险预测中的可行性。本研究重点不在于开发一个完整商业化体系,而是流行病调查发病率前 5 的高风险病原,完成以下小范围目标:在既有 Cas12a 检测平台上,补充开发针对代表性 EOS 病原的 mcf-DNA 识别模块,并在人工合成片段和部分阳性母体样本中验证其信号输出特性;联合使用数字 PCR 对母体血浆 mcf-DNA 进行前处理和分隔扩增,初步建立一套可用于复杂背景中的病原核酸检测流程;基于临床样本,探索检测信号与新生儿感染转归之间的相关性,为后续开展大样本风险模型构建提供数据依据。 |
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Objectives of Study: |
This project is based on the CRISPR/Cas12a-based ultrasensitive PCR detection platform established previously by our research group. Focusing on the identification of trace microbial cell-free DNA (mcf-DNA) in maternal plasma, it explores the feasibility of this platform for the prenatal risk prediction of early-onset neonatal sepsis (EOS).Rather than developing a complete commercial system, this study prioritizes the epidemiological investigation of high-risk pathogens ranking among the top 5 in incidence, with the following limited objectives:Based on the existing Cas12a detection platform, supplement and develop mcf-DNA identification modules targeting representative EOS pathogens, and verify their signal output characteristics using synthetic fragments and selected positive maternal samples;Combine digital PCR for pre-processing and partitioned amplification of mcf-DNA in maternal plasma, and preliminarily establish a pathogen nucleic acid detection workflow applicable in complex backgrounds;Using clinical samples, explore the correlation between detection signals and neonatal infection outcomes, so as to provide data support for the subsequent construction of a large-sample risk prediction model. |
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药物成份或治疗方案详述: |
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Description for medicine or protocol of treatment in detail: |
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纳入标准: |
1.在本院分娩的孕妇及其新生儿(母婴成对纳入); 2.围产期孕妇存在至少一项感染相关高危因素,包括但不限于: (1).分娩时母体发热(体温 > 38 °C); (2)胎膜早破时间 > 18 小时; (3)乙型链球菌(Group B Streptococcus,GBS)产前筛查阳性; (4)临床诊断或高度怀疑绒毛膜羊膜炎; 3.新生儿出生后 72 小时内接受系统感染评估; 对照组:1.在本院同期分娩的孕妇及其新生儿,与病例组母婴成对匹配;2.孕妇无围产期感染相关高危因素,无母体发热、无胎膜早破延长、GBS 筛查阴性、无绒毛膜羊膜炎等临床感染证据;3.新生儿出生后 72 小时内感染评估结果为阴性,无新生儿早发型感染相关临床表现及实验室异常; 4.与病例组按母亲年龄、分娩孕周进行 1:2 匹配。 |
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Inclusion criteria |
1.Pregnant women delivering in our hospital and their newborns (maternal-infant pairs to be enrolled consecutively); 2.Pregnant women with at least one infection-related perinatal risk factor, including but not limited to: (1).Maternal fever during labor (body temperature > 38 °C); (2).Premature rupture of membranes lasting > 18 hours; (3).Positive prenatal screening for Group B Streptococcus (GBS); (4).Clinical diagnosis or high suspicion of chorioamnionitis; 3.Newborns who undergo a complete infection evaluation within 72 hours after birth. Control Group: 1.Pregnant women who delivered at the same hospital during the same period and their newborns, pair-matched with the mother–infant pairs in the case group; 2.Pregnant women have no perinatal infection?related high?risk factors, no maternal fever, no prolonged premature rupture of membranes, negative GBS screening, and no clinical evidence of infection such as chorioamnionitis; 3.Newborns have a negative infection evaluation within 72 hours after birth, with no clinical manifestations or laboratory abnormalities related to early?onset neonatal infection; 4.Matched 1:2 with the case group by maternal age and gestational week at delivery. |
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排除标准: |
1.孕期合并需长期或特殊治疗的严重慢性感染性疾病者(如 HIV 感染等); 2.分娩前 1 周内孕妇接受过系统性抗菌药物治疗者; 3.新生儿已明确诊断存在严重结构畸形或遗传/染色体异常者; 4.新生儿感染发生于出生后 > 72 小时(迟发型败血症)或临床表现可完全由非感染性疾病解释者; 5.围产期或新生儿临床资料不完整,无法完成 EOS 诊断评估或随访者; |
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Exclusion criteria: |
1.Pregnant women with severe chronic infectious diseases requiring long-term or specialized treatment during pregnancy (e.g., HIV infection); 2.Pregnant women who received systemic antimicrobial therapy within 1 week before delivery; 3.Newborns with a confirmed diagnosis of severe structural malformations or genetic/chromosomal abnormalities; 4.Newborns in whom infection occurred more than 72 hours after birth (late-onset sepsis) or whose clinical manifestations could be fully explained by non-infectious diseases; 5. Those with incomplete perinatal or neonatal clinical data, preventing completion of EOS diagnostic evaluation or follow-up. |
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研究实施时间: Study execute time: |
从 From 2026-04-20 00:00:00至 To 2027-01-01 00:00:00 |
征募观察对象时间: Recruiting time: |
从 From 2026-04-23 00:00:00 至 To 2027-01-01 00:00:00 |
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干预措施: Interventions: |
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研究实施地点: Countries of recruitment and research settings: |
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测量指标: Outcomes: |
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采集人体标本:
Collecting sample(s)
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征募研究对象情况: Recruiting status: |
尚未开始 Not yet recruiting |
年龄范围: Participant age: |
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性别: |
女性 |
Gender: |
Female |
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随机方法(请说明由何人用什么方法产生随机序列): |
无 |
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Randomization Procedure (please state who generates the random number sequence and by what method): |
None |
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是否公开试验完成后的统计结果: Calculated Results after the Study Completed public access: |
不公开/Private |
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盲法: |
无 |
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Blinding: |
None |
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是否共享原始数据: IPD sharing |
否No |
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共享原始数据的方式(说明:请填入公开原始数据日期和方式,如采用网络平台,需填该网络平台名称和网址): |
不共享 |
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The way of sharing IPD”(include metadata and protocol, If use web-based public database, please provide the url): |
Not applicable (data not shared). |
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数据采集和管理(说明:数据采集和管理由两部分组成,一为病例记录表(Case Record Form, CRF),二为电子采集和管理系统(Electronic Data Capture, EDC),如ResMan即为一种基于互联网的EDC: |
病例报告表(CRF)+电子数据记录 |
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Data collection and Management (A standard data collection and management system include a CRF and an electronic data capture: |
Case Report Form (CRF) Electronic Data Recording |
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数据与安全监察委员会: Data and Safety Monitoring Committee: |
有/Yes |