View clinical trials related to Organ Transplant Rejection.
Filter by:This first-in-human study is designed to assess the safety and pharmacokinetic (PK) profile of sustained-release (SR) depot tacrolimus, which will be administered as a single dose of 0.1 mg/kg by subcutaneous (SC) injection in healthy subjects.
Organ transplantation has become an effective therapy for patients with end-stage organ failure at present. Rejection is still the most common cause of early dysfunction after organ transplantation. A large number of experimental and clinical data are suggesting that the formation of microchimer can successfully achieve donor-specific immune tolerance after transplantation. The formation of microchimerism may be one of the long-term survival mechanisms of transplantation, and the detection of microchimerism after transplantation can effectively predict the rejection of grafts. Scientists from Stanford University in the United States continued to report in 2014 and 2015 that using a new generation of high-throughput sequencing technology (NGS) to detect the level of free DNA from donor in blood plasma of recipients after cardiac and lung transplantation. The investigators found the level of free DNA in donor significantly increased when acute or chronic rejection happens, thus it may be used as a reflection of rejection or graft injury markers. It has been reported that microchimerization and donor free DNA levels are associated with rejection after organ transplantation, but these studies are mostly based on a small number of cases and the results of which re qualitative and can not provide a specific microchimerization rate due to limited detection techniques. Therefore, in order to clarify the role of microchimerism and the level of cell-free DNA in donor in organ transplantation tolerance, it is necessary to use a new generation of detection technology for multi-center study with large samples. Clinical trial was used to evaluate the clinical prediction and diagnostic value of microchimerization rate and donor cfDNA for acute rejection after organ transplantation. 950 cases of organ transplantation, of which 600 cases of renal transplantation, 300 cases of liver transplantation and 50 cases of lung transplantation.8 ml peripheral blood was collected in 1 tubes with EDTA anticoagulation. The timing of the collection was as follows: Patients with routine treatment after transplantation were preformed once every one weeks for one months and then every 3 month until the one year. In case of acute rejection, the additional blood was collected once on the day of diagnosis, and once after the treatment remission. All the samples were detected for microchimerism and cfDNA.