Center For Pediatric And Adolescent Medicine Of The Johannes Gutenberg University Mainz
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Mainz, Germany
Rare diseases
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A plain-language summary of the goals, design and what participants do
The study involves people who have had a liver transplantation at least one year ago. After a transplant, patients need medicines to keep the new liver working and to protect other organs, especially the kidneys. The trial tests a new approach that uses everolimus together with other medicines but avoids drugs known as calcineurin inhibitors such as tacrolimus or cyclosporin. In the standard group, patients continue the usual regimen that includes those calcineurin inhibitors, often combined with mycophenolate mofetil.
The purpose of the study is to determine whether the calcineurin‑inhibitor‑free regimen can better preserve kidney function compared with the standard treatment. Participants will be randomly assigned to one of the two groups and will take the assigned medicines for about a year, with regular clinic visits, blood tests, and occasional imaging. Kidney health will be checked using a blood test called estimated glomerular filtration rate, which estimates how well the kidneys filter waste.
Throughout the trial, doctors will also look for signs that the transplanted liver is still healthy by performing a small tissue sample test called a biopsy and by monitoring for any serious problems such as rejection, infection, or the development of chronic kidney disease. Quality of life will be assessed with questionnaires, and any new health issues, including high blood pressure or diabetes, will be recorded. The study will continue follow‑up for several years to see long‑term effects.
The trial runs in 10 steps – from screening to follow-up. Each step says what happens and what the team monitors.
9 criteria
18 criteria
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Mainz, Germany
Berlin, Germany
Hanover, Germany
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is a medication that works by blocking a pathway in immune cells, helping to prevent the body from attacking a new liver. In this study it is used instead of the usual drugs that can harm the kidneys, with the goal of protecting kidney function while still stopping rejection of the transplanted liver.
is a commonly used drug that suppresses the immune system by inhibiting a protein called calcineurin. It is part of the standard treatment for liver transplant patients and helps keep the new liver from being rejected, but it can sometimes reduce kidney function over time.
is another calcineurin‑inhibiting medicine that is often used to prevent rejection after a liver transplant. Like tacrolimus, it is effective at controlling the immune response but may also have side effects that affect the kidneys.
is an immune‑modulating drug that works by stopping certain immune cells from multiplying. It is given together with other medicines in the trial to provide additional protection against liver rejection while allowing the researchers to test whether reducing calcineurin‑inhibitor use can improve kidney health.
This medication is taken by mouth as a tablet and works by attaching to a protein called FKBP12, which then blocks a key cell‑growth pathway known as mTOR, reducing the activity of immune cells that can harm a transplanted liver. Everolimus is an approved and widely used drug for preventing organ rejection and for certain cancers, and it is well described in medical research. Its main use is as an immunosuppressant to help patients after liver transplantation keep the new organ healthy. It belongs to the class of mTOR inhibitors, a type of immunosuppressive therapy.
Tacrolimus is given orally as a capsule and works by binding to FKBP12, which then stops an enzyme called calcineurin from activating immune cells that produce the signaling molecule IL‑2. It is an established, FDA‑approved drug for preventing rejection of transplanted organs and is extensively covered in the medical literature. The drug is primarily used to protect liver, kidney, and heart transplants from immune attack. It is classified as a calcineurin inhibitor and an immunosuppressant.
This drug is taken by mouth in capsule form and attaches to a protein called cyclophilin, which together block calcineurin and lower the production of IL‑2, thus calming the immune system’s response to a new liver. Ciclosporin has been approved for many years to prevent organ rejection and has a large body of research supporting its use. Its main indication is as an immunosuppressive agent for liver transplant recipients. It belongs to the calcineurin inhibitor class of immunosuppressants.
Mycophenolate mofetil is an oral tablet that is converted in the body to mycophenolic acid, which stops an enzyme called IMPDH needed for making DNA building blocks, thereby reducing the growth of T and B immune cells. This medication is approved and widely used to prevent rejection after organ transplants and is well documented in clinical studies. Its primary role is as an immunosuppressant to help maintain the health of a transplanted liver. It is classified as an antimetabolite immunosuppressive drug.
This is a sudden immune response where the body attacks the transplanted liver. It typically appears weeks to months after the transplant. Liver enzymes rise, indicating damage. If the response continues, the transplanted tissue can become scarred. Over time, the liver may lose its ability to function properly.
This condition involves a gradual loss of kidney function over years. It often starts with mild reductions in filtering ability. As it progresses, waste products build up in the blood. The disease is staged, with higher stages indicating more severe loss. Eventually, kidney function may become very low.
High blood pressure means the force of blood against artery walls is consistently elevated. It can develop slowly without obvious symptoms. Over time, the arteries may become stiffer. The heart works harder to pump blood. Persistent high pressure can affect many organs.
This disorder refers to abnormal levels of fats in the blood, such as cholesterol or triglycerides. It often develops gradually due to diet, genetics, or lifestyle. Elevated blood fats can deposit in blood vessel walls. The buildup may narrow the vessels. The condition can worsen if not managed.
Diabetes is a chronic condition where the body cannot properly control blood sugar levels. It may develop gradually and often has few early signs. High blood sugar can affect nerves, blood vessels, and organs. The disease can become more difficult to control over time. Ongoing high sugar levels can lead to further complications.
Malignancy means the presence of cancerous cells that grow uncontrollably. It can start as a small cluster of abnormal cells. Over months to years, the cells may multiply and spread. The growth can invade surrounding tissues. The disease may become more extensive if it continues.
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