Place of the QuantiFERON-CMV (QF-CMV) Test in a Prediction for Colic Cytomegalovirus Reactivation During Ulcerative Colitis (UC)
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 入组人数
- 196
- 试验地点
- 2
- 主要终点
- Quantification of CytoMegaloVirus (CMV) DeoxyriboNucleic Acid (DNA) load (quantitative PolymeraseChainReaction (qPCR) analysis) in the inflammatory tissue - UI/100 000 cells
研究概览
简要总结
CytoMegaloVirus (CMV) infection impairs evolution of Ulcerative Colitis (UC) leading to more severe and resistant to immunosuppressive therapies flare-up. CytoMegaloVirus (CMV) reactivation is assessed by the quantification of the CytoMegaloVirus (CMV) DeoxyriboNucleic Acid (DNA) load by real-time PCR (qPCR) in colonic biopsies; this assay is invasive and costly. The QuantiFERON-CytoMegaloVirus (QF-CMV) assay measures the immune response against CytoMegaloVirus (CMV) in a blood specimen.
详细描述
This study aim to evaluate the performances of this new assay to predict the risk of CytoMegaloVirus (CMV) reactivation in the colon of UC patients. A new algorithm for the care of Ulcerative Colitis (UC) patients that could be used in all centers, even those without molecular biology lab, could be proposed: in case of a positive QuantiFERON-CytoMegaloVirus (QF-CMV) assay, the immune response protects the patient against Cytomegalovirus (CMV) reactivation and intensification of immunosuppressive therapies should be proposed; at the opposite, a negative QuantiFERON-CytoMegaloVirus (QF-CMV) assay will invite to biopsy in order to detect CytoMegaloVirus (CMV) replication and to treat with ganciclovir when appropriate. This algorithm will preserve invasive biopsies in absence of CytoMegaloVirus (CMV) tissue reactivation.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Diagnostic
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Patient with seropositive for CytoMegaloVirus (CMV) (IgG+)
- •Patient requiring hospitalization for flare of Ulcerative Colitis (UC) with Mayo score > 5 and an endoscopic subscore ≥ 2
- •Social security affiliation
- •Signed informed consent
排除标准
- •Wardship patient and curatorial patient
- •Patient unable to understand or sign the protocol
- •Colectomy total or partial
研究组 & 干预措施
QuantiFERON Test
Patient with CytoMegaloVirus (CMV) infection will be included. They will have biopsies and blood samples, composite of QuantiFERON-CytoMegaloVirus (QF-CMV) assay.
干预措施: Blood samples (Biological)
QuantiFERON Test
Patient with CytoMegaloVirus (CMV) infection will be included. They will have biopsies and blood samples, composite of QuantiFERON-CytoMegaloVirus (QF-CMV) assay.
干预措施: Biopsies (Procedure)
结局指标
主要结局
Quantification of CytoMegaloVirus (CMV) DeoxyriboNucleic Acid (DNA) load (quantitative PolymeraseChainReaction (qPCR) analysis) in the inflammatory tissue - UI/100 000 cells
时间窗: At the inclusion
Theses two primary outcomes will determinate the sensibility, specificity, positive predictive value and negative predictive value of the QF-CMV in prediction CMV reactivation in Ulcerative Colitis (UC) patients with acute flare-up.
QuantiFERON-CytoMegaloVirus (QF-CMV) test result (UI/ml) in blood
时间窗: At the inclusion
Theses two primary outcomes will determinate the sensibility, specificity, positive predictive value and negative predictive value of the QF-CMV in prediction CMV reactivation in Ulcerative Colitis (UC) patients with acute flare-up.
次要结局
- QuantiFERON-CytoMegaloVirus (QF-CMV) test result (UI/ml) in blood(At 14 weeks)
- Total number of cells infected by CMV (/mm2) by ImmunoHistoChemistry (IHC) in the inflammatory tissue(At the inclusion)
- Concordance of the results between quantitative PolymeraseChainReaction (qPCR) and ImmunoHistoChemistry (IHC)(At the inclusion)