Medical Oncologist
CION Cancer Clinics
Liver transplant rejection: the signs and what is done | CION Cancer Clinics
Rejection is when your immune system attacks the new liver. Mild rejection is common in the first few months and usually settles with a change in medicines. It is often found on routine blood tests before you feel anything. This page explains the signs to watch for, how the transplant team confirms it, how it is treated and when you must go to hospital the same day. At CION Cancer Clinics, a multidisciplinary tumour board weighs your liver function and your scans before recommending any treatment.
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Medically reviewed by Dr. Muralidhar MuddusettyConsultant Surgical Oncologist · MBBS (AIIMS), MS (Surgery, AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh) · last reviewed October 2026, next review due October 2027
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On this page
- What is liver transplant rejection, and is it common?
- What kinds of rejection are there?
- What happens if rejection is suspected?
- What do the words on a rejection report mean?
- What do families often get wrong about rejection?
- What can this page not tell you?
- Common questions about liver transplant rejection
The short answer
What is liver transplant rejection, and is it common?
Rejection means your immune system has noticed that the new liver is not your own and has started to attack it. Mild rejection is common in the first few months after a transplant, and most episodes settle with a change in medicines. It is a reason to act quickly, not a reason to assume the transplant has failed.
Why it happens at all
Your immune system is built to find and remove anything foreign. A donated liver, even from a close family member, carries markers your body has never seen. The medicines you take every day after the operation, called immunosuppressants, turn that response down. Rejection usually means the response has broken through, often because the level of the medicine in your blood has dropped.
Why it is often found before you feel anything
Early rejection rarely causes symptoms. It shows up first as a rise in the liver blood tests you have at every follow-up visit. That is why the transplant team insists on those tests, and why skipping them is risky even when you feel perfectly well. You can read more about the daily side of these medicines on our page on immunosuppression for life.
Rejection is managed by your transplant centre. Keep their number with you at all times.The kinds you may hear about
What kinds of rejection are there?
Doctors describe rejection by when it happens and what the immune system is doing. The name on your report tells the team which treatment to use.
Acute cellular rejection
The most common kind. White blood cells move into the new liver and inflame it. It usually happens in the early months and usually responds well to treatment.
Antibody-related rejection
Less common. The body makes antibodies against the donor liver. It can be harder to treat and may need stronger medicines given in hospital.
Chronic rejection
Rare, and slower. The small bile ducts inside the liver are gradually damaged over a long time. It is the kind most likely to lead to talk of a second transplant, which is why the team watches for it carefully.
Things that look like rejection
A narrowed blood vessel, a blocked bile duct, an infection or a side effect of a medicine can all raise the same blood tests.
- A scan checks the blood vessels and bile ducts
- Blood tests look for infection
- A biopsy confirms rejection itself
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When to go to hospital today
If you have had a liver transplant and your skin or eyes turn yellow, especially with a fever, go to hospital today. The same applies to new pain over the liver, very dark urine with pale stools, confusion, or vomiting that means you cannot keep your medicines down. Call your transplant centre on the way and tell the emergency team you take anti-rejection medicines. Do not wait for your next appointment.
What the team does
What happens if rejection is suspected?
Repeat blood tests and a medicine level
The team repeats your liver tests and checks the level of your main anti-rejection medicine. A low level, often after missed or late doses, is one of the most common explanations.
A scan of the new liver
An ultrasound with Doppler, which shows blood flow, checks the vessels and bile ducts. This rules out a plumbing problem that would need a different fix.
A liver biopsy
A thin needle takes a tiny piece of the liver. Looking at it under a microscope is the only way to confirm rejection and grade how strong it is.
Treatment, usually by adjusting medicines
Mild rejection is often treated by raising the dose of existing medicines. Stronger episodes are usually treated with a short course of high-dose steroids, sometimes through a drip in hospital. Your blood tests are then repeated until they settle.
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On your report
What do the words on a rejection report mean?
- ALT and AST
- Enzymes that leak out of liver cells when they are inflamed. A rise is often the first sign something is wrong, but not proof of rejection.
- Bilirubin
- A yellow pigment the liver clears. When it builds up, skin and eyes turn yellow.
- Tacrolimus level
- How much of this common anti-rejection medicine is in your blood. Too low raises the risk of rejection. Too high can harm the kidneys.
- Rejection activity index
- A score the pathologist gives the biopsy to say whether rejection is mild, moderate or severe.
- Steroid pulse
- A short burst of high-dose steroid medicine to calm the immune attack quickly.
Commonly believed
What do families often get wrong about rejection?
"Rejection means the transplant has failed."
Most episodes are mild and settle with treatment. The new liver usually recovers fully. Losing a liver to rejection is now uncommon when it is caught early.
"A liver from my own brother or son cannot be rejected."
A family donor is often a closer match, but no donor is identical unless they are an identical twin. Anti-rejection medicines are needed whoever gave the liver.
"I feel well, so I can cut down my tablets."
Feeling well is what the tablets are for. Stopping, skipping or halving them without the team's advice is a common route to rejection.
"A herbal liver tonic will help the new liver settle."
Some herbal products and some common medicines change the level of anti-rejection drugs in the blood, in either direction. Tell the transplant team about everything you take, without worrying about being judged.
Being straight with you
What can this page not tell you?
It cannot tell you whether a raised blood test is rejection. Only your transplant team, with your full results, a scan and often a biopsy, can say that. A single number read on its own at home can mislead in either direction.
Who this page does not apply to
If you have had a liver resection, where part of your own liver was removed, rejection does not apply to you. Your own tissue is not attacked. The same is true after TACE, ablation or tablets for liver cancer. This page is only for people living with a donated liver.
Where CION fits
Transplants are done at licensed transplant centres, and rejection is managed by that team. If you had a transplant for liver cancer, CION's oncologists can work alongside them on cancer follow-up. Some cancer medicines, especially immunotherapy, can trigger rejection, which is explained on our page on immunotherapy after a transplant. Infection, the other main risk of these medicines, has its own page on infection risk after transplant.
Questions we are asked
Common questions about liver transplant rejection
What are the first signs of liver transplant rejection?
Often there are none. The first sign is usually a rise in liver blood tests at a routine visit. When symptoms do appear, they can include yellow skin or eyes, fever, dark urine, pale stools, tiredness, itching or pain over the liver. Any of these needs a call to your transplant team the same day.
Can rejection happen years after the transplant?
Yes, although it is less common than in the early months. Late rejection is often linked to missed doses, a change of medicine brand, or another medicine affecting your drug levels. That is why blood tests continue for life, even when you have felt well for a long time.
Is a liver biopsy always needed?
Usually, when rejection is suspected and the cause is not clear. Blood tests and scans can point towards rejection, but the biopsy confirms it and shows how strong it is. Your team will explain why they want one and what it involves before it is done.
Does treating rejection mean more side effects?
It can, for a while. High-dose steroids can raise blood sugar, disturb sleep and change mood, and stronger immune suppression raises the risk of infection. These effects usually ease as doses come back down. Report any fever during this time quickly.
What if rejection does not respond to treatment?
The team has stronger medicines to try, usually given in hospital. If chronic rejection slowly damages the liver despite treatment, a second transplant may be discussed. This is uncommon, and your transplant centre will explain where you stand.
Can I take ordinary painkillers or antibiotics?
Ask first. Some antibiotics, antifungals and other common medicines raise or lower anti-rejection drug levels, and some painkillers can harm the kidneys. Tell any doctor or pharmacist you see that you have had a liver transplant, and check with your transplant team before starting anything new.
Does rejection mean my liver cancer has come back?
No. Rejection is the immune system attacking the donor liver. Cancer coming back is a separate question, checked with scans and blood tests such as AFP during follow-up. Your team watches for both, but one does not cause the other.
Who should I call if I am worried?
Your transplant centre first, for anything about rejection, medicines or new symptoms. If you are under CION for cancer follow-up, call the CION helpline too, and the team will help coordinate with your transplant doctors. If symptoms are severe, go to hospital today.
Your Specialists
Meet CION's liver cancer specialists. Bring your scan reports and liver blood tests.
Our medical and surgical oncologists plan liver cancer care together, weighing the tumour and how well your liver works before choosing surgery, a liver-directed procedure or medicines.
Medical Oncologist
Dr. C. Raghavendra Reddy
MBBS(Gold Medal), DNB(General Medicine), DM(Medical Oncology)(Gold Medal)
Medical Oncologist
Dr. Bharati Devi Gorantla
MBBS, MD(General Medicine), DM(Medical Oncology)(Adyar,Chennai), ECMO, MRCP SCE(UK)
Medical Oncologist
Dr. Owais Mohammed
MBBS, MD (General Medicine), DrNB (Medical Oncology), ECMO, MRCP SCE (Medical Oncology) (UK)
Medical Oncologist
Medical Oncologist
Surgical Oncologist
Dr. Muralidhar Muddusetty
MBBS (AIIMS), MS (Surgery) (AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh)
Surgical Oncologist
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Sources
- MedlinePlus — Liver Transplantation
- NIDDK — Liver Transplant - NIDDK
- NHS Blood and Transplant — Liver - Organ transplantation - NHS Blood and Transplant
This page is general information, not a prescription. Do not change or stop any treatment based on what you read here. If anything is worrying you, contact your own treating team — or call our helpline and we will help you reach the right specialist.
Keep reading
Related pages
Immunosuppression for lifeThe daily medicines that keep rejection awayInfection risk after transplantThe other side of turning the immune system downThe first week after transplantWhen early rejection is most closely watchedCancer coming back after a transplantA separate question from rejection, and how it is checked
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Living with a new liver after cancer, and unsure about follow-up?
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