Kidney transplantation · Before the transplant
Who genuinely cannot have a kidney transplant?
Most refusals patients receive are not on this list. It is worth knowing what the real barriers are — and which of them are permanent.
The short answer
- The list of absolute barriers is short, and most of the conditions patients worry about are not on it.
- Nearly every item on the list describes something active or unresolved — which means it can often change.
- HIV is a relative contraindication, not an absolute one. Defined criteria exist and patients who meet them are transplanted.
- Cancer is assessed case by case, by tumour type and time since treatment.
- One item on the list is not medical at all — and it is the one worth planning for.
The absolute contraindications
These are the conditions that genuinely rule out kidney transplantation while they are present:
| Condition | Permanent? |
|---|---|
| Unresolved cancer | No — depends on treatment and remission |
| Active AIDS or active hepatitis | No — depends on control of the disease |
| Active tuberculosis | No — treatable |
| Severe vascular disease | Usually yes |
| Active intravenous drug addiction | No — depends on recovery |
| Life expectancy under five years | Depends on the underlying cause |
| Recent myocardial infarction | No — a matter of timing |
| Other end-stage organ failure (heart, lung, liver) | May redirect to combined transplantation |
| Inability to afford post-transplant medication | No — but it must be solved before surgery |
Most of these are written as "active", "unresolved", "recent". That wording is deliberate. They describe a state at a moment in time, not a permanent characteristic of the patient.
A contraindication that can end is a delay, not a refusal — and the two should not be communicated in the same sentence.
The last item on the list
One entry is not a disease: the patient's inability to obtain their medication after the transplant.
It sits on the list for a hard reason. Immunosuppressive drugs are not optional and not temporary. A transplanted kidney whose recipient stops taking them will be lost — and a donated organ will have been wasted along with the donor's surgery.
This is not a reason to hide financial difficulty from a transplant team. It is a reason to raise it early, while it can still be planned around. Teams would far rather solve this before surgery than discover it afterwards.
HIV: a relative contraindication
HIV positivity is a relative contraindication, not an absolute one. Some HIV-positive patients are eligible for kidney transplantation, from a living or a deceased donor.
Published consensus criteria set out what needs to be true:
- CD4+ T cell count above 200/mm³ for more than six months
- HIV-1 RNA undetectable for more than three months
- On highly active antiretroviral therapy for more than three months
- Free from opportunistic infections
The specific testing requirements and their timing are planned jointly by the transplant team and the infectious diseases team. Note the distinction on the list above: active AIDS is an absolute barrier. Controlled HIV infection is not the same thing.
Cancer: assessed case by case
There are two genuine reasons for caution when a transplant candidate has cancer:
- The immunosuppressive therapy given after transplantation adversely affects the natural course of cancer.
- Transplantation is not appropriate for a patient whose life expectancy is already short because of the cancer itself.
But neither of these makes cancer an automatic disqualification.
A history of cancer does not pose a definite obstacle to transplantation. Each patient is evaluated separately, according to the type of tumour and the tumour-free waiting period since treatment.
Different cancers carry different required waiting times. "You had cancer" is not an answer — the questions are which one, and how long ago.
What is not on the list
It is worth naming the things patients are commonly told will disqualify them, which do not appear among the absolute contraindications:
- Diabetes — diabetic patients may benefit most from transplantation
- Hepatitis B or C — not an obstacle unless the liver is cirrhotic
- Age — most centres set no upper limit; suitability is assessed, not age
- Being overweight or underweight — a reason to correct weight, not to refuse
- A previous failed transplant — retransplantation is routine
- Poor tissue matching — largely irrelevant with a living donor
- Incompatible blood type — paired exchange and ABO-incompatible routes exist
- A positive crossmatch — depends on the antibody type
Each of these has been used to send patients away. None of them belongs on the list at the top of this page.
If you have been refused
Three questions turn a vague refusal into something you can act on:
- Which specific finding was the reason? Not "your condition" — the finding.
- Is it on the absolute list, or is it a delay? The difference is everything.
- If it is a delay, what would need to change, and by how much? A number you can work towards is a plan. A vague answer usually is not.
Prof. Dr. Murat Tuncer
Nephrologist and transplant physician. Author of Kidney Transplantation — With Questions and Answers (Istanbul, 2020), written to answer the questions his own patients ask most often.
Was your refusal on the list?
Send us the reports and the reason you were given. We will tell you honestly which it was — including when the answer is that the refusal stands.
Medical disclaimer. This article is general information adapted from a published book. It is not personal medical advice, it does not establish a doctor–patient relationship, and it cannot replace assessment by the physician treating you. Contraindication criteria differ between centres and change as treatments improve. Always consult your own nephrologist or transplant centre before making decisions about your treatment.
References
- Knoll G, Cockfield S, Blydt-Hansen T, et al. Canadian Society of Transplantation consensus guidelines on eligibility for kidney transplantation. CMAJ 2005;173(10).
- Kasiske BL, Cangro CB, Hariharan S, et al. The evaluation of renal transplantation candidates: clinical practice guidelines. Am J Transplant 2001;1(suppl 2):3–95.
- Rao PS, Merion RM, Ashby VB, Port FK, Wolfe RA, Kayler LK. Renal transplantation in elderly patients older than 70 years of age: results from the Scientific Registry of Transplant Recipients. Transplantation 2007;83:1069–74.
