The purpose of this study is to determine whether functional genetic variants can affect tacrolimus dose corrected trough levels and associate with the side effects in Chinese renal transplant recipients.

NCT03083769

Conditions

1. Transplantation

Full understanding of this mechanism is important for the personalized use of tacrolimus and reducing the risk of side effects.The CYP3A5*3 (A6986G) resulting in a splicing defect and the absence of protein activity, was identified as a functional variant (Kuehl P.2001). --- A6986G ---

This interventional prospective multicenter nonrandomized clinical and epidemiological study is the first Russian study aimed at evaluating the effectiveness of a single-lead electrocardiography device (CardioQVARK) in screening for atrial fibrillation in primary health care.

NCT04204330

Conditions

1. Atrial Fibrillation

Interventions

1. Device: CardioQvark cardiac monitor and software, single-lead ECG

MeSH:Atrial Fibrillation

HPO:Atrial fibrillation Paroxysmal atrial fibrillation

For new oral anticoagulants - rs2244613 of the gene CES1, rs1045642 (C3435T), rs1128503 (C1236T), rs2032582 (G2677T / А) of the gene ABCB1, rs2231142 (С421А, Q141K) of the gene ABCG2, rs776746 (A6986G * 399 CYP3 CYP3) CYP3A4.. Inclusion Criteria: Men and women aged 18 to 96 years who have one or more of the following risk factors: - hypertonic disease - history of ischemic stroke or transient ischemic attacks - type 1 and type 2 diabetes - 1-3 degrees obesity - heart failure or the presence of a clinic to reduce exercise tolerance associated with shortness of breath - coronary heart disease or the presence of symptoms of chest pain, in the absence of an established diagnosis of coronary heart disease - the presence of peripheral arterial atherosclerosis - the presence of a clinic of interruptions in the work of the heart (bouts of rapid, irregular heartbeats, pauses in work of heart) Non-inclusion criteria: - Acute coronary syndrome - Acute ischemic or hemorrhagic stroke - Acute psychosis - The presence of severe concomitant diseases with an expected life expectancy of less than 2 years Exclusion Criteria: Refusal of further participation in the study Inclusion Criteria: Men and women aged 18 to 96 years who have one or more of the following risk factors: - hypertonic disease - history of ischemic stroke or transient ischemic attacks - type 1 and type 2 diabetes - 1-3 degrees obesity - heart failure or the presence of a clinic to reduce exercise tolerance associated with shortness of breath - coronary heart disease or the presence of symptoms of chest pain, in the absence of an established diagnosis of coronary heart disease - the presence of peripheral arterial atherosclerosis - the presence of a clinic of interruptions in the work of the heart (bouts of rapid, irregular heartbeats, pauses in work of heart) Non-inclusion criteria: - Acute coronary syndrome - Acute ischemic or hemorrhagic stroke - Acute psychosis - The presence of severe concomitant diseases with an expected life expectancy of less than 2 years Exclusion Criteria: Refusal of further participation in the study Atrial Fibrillation Atrial Fibrillation This is an interventional, prospective, multicenter, nonrandomized clinical and epidemiological study. --- C3435T --- --- C1236T --- --- G2677T --- --- Q141K --- --- A6986G ---

The purpose is to define if calcineurin activity is a better biological parameter than blood concentration for the therapeutic tacrolimus monitoring.

NCT01413685

Conditions

1. Renal Transplant Rejection

Interventions

1. Other: Pharmacokinetics/dynamics

Genotyping of CYP3A5 * 3 (A6986G) and mdr-1: mutations of these proteins could explain the changes of absorption of tacrolimus. --- A6986G ---

Kidney transplantation is the most appropriated treatment in end stage renal failure patients in order to improve quality of life. However, patients have to take immunosuppressive drugs to prevent graft rejection. Tacrolimus is the most common immunosuppressive drug used now. However, tacrolimus has narrow therapeutic level and needs regularly therapeutic monitor because of inter-individual variation in dosage regimen. Not only age, body weight and drug interaction but also genetic factor in metabolic pathway of tacrolimus plays an important role in tacrolimus blood level. Previous data showed CYP3A5 genetic polymorphism was significant effect tacrolimus blood level. From previous study showed the mean dose of tacrolimus required for the induction phase was significantly higher (P= 0.006) in the CYP3A5*1/*1 group at 0.142±0.050 mg/kg/day than that required by patients who carried either the CYP3A5*1/*3 group of 0.097±0.040 mg/kg/day or the CYP3A5*3/*3 group of 0.077±0.020 mg/kg/day. Tacrolimus maintenance dose required for CYP3A5*1/*1 group of 0.12±0.03 mg/kg/day was 1.3 times higher (P<0.0001) than used for the CYP3A5*1/*3 at 0.09±0.03 mg/kg/day and 2.4 times higher than the CYP3A5*3/*3 group of 0.05±0.02 mg/kg/day. Therefore, the investigators plan to investigate a prospective study to determine the clinical outcome of tacrolimus treatment in kidney transplant recipients between genotype guided dosage regimen group and conventional group.

NCT03173820

Conditions

1. Kidney Transplantation

Interventions

1. Genetic: Genotype guided
2. Genetic: Conventional

CYP3A5*3, an A to G transition (A6986G) within intron 3 results in the production of a truncated protein, is the most common allele variant. --- A6986G ---