Kidney transplantation · Before the transplant
The best transplant is the one that happens before dialysis.
Every month on dialysis costs you something the transplant cannot give back. Done early enough, a transplant can mean no dialysis at all — and a realistic chance of returning to your old job.
The short answer
- A preemptive transplant is one performed before chronic dialysis begins, when kidney filtration falls below 20 mL/min.
- It is currently the most successful treatment available for chronic kidney disease.
- Risk of the transplanted kidney failing in the first year drops by 52% compared with transplantation after dialysis has started.
- Only 24% of patients on dialysis for over a year return to work after a transplant. Among preemptive patients, at least half do.
- The referral should happen at eGFR below 30 — not when dialysis is already being scheduled.
What "preemptive" means
Preemptive kidney transplantation is a transplant performed on a patient with chronic kidney disease before entering a chronic dialysis programme, at the point where the glomerular filtration rate falls below 20 mL/min.
It is not an experimental route or a shortcut. It is the ideal treatment method for chronic kidney disease, and it produces better outcomes than either dialysis or a transplant performed later.
What the difference actually is
The advantage over a transplant performed after dialysis has begun is not marginal.
| Compared with transplant after dialysis | Preemptive transplant |
|---|---|
| Risk of graft failure, first year | 52% lower |
| Risk of graft failure, second year onwards | 86% lower |
| Rejection rates | Around 25% lower |
| Return to previous work | At least 50%, versus 24% after a year of dialysis |
Longer time on dialysis is also associated with higher rejection rates in the first six months after transplantation. The relationship runs one way: waiting does not improve anything.
A preemptive transplant also means avoiding what dialysis itself brings — infections, blood transfusions (which raise antibody levels and narrow future donor options), cardiac dysfunction and high blood pressure. There are fewer hospitalisations overall, and less delayed graft function.
The part nobody mentions: work
Survival statistics dominate these conversations, and they should. But for most patients the question underneath is simpler — will I get my life back?
Here the numbers are stark. Of patients who have been on dialysis for more than a year, only 24% return to their jobs after transplantation. Among patients transplanted preemptively, at least half return to the work they did before.
Time on dialysis does not only damage the kidney's prospects. It erodes the working life, the routine and the independence that a transplant is supposed to restore.
When should this conversation start?
Earlier than it usually does. There are two thresholds, and they are not the same:
| Kidney filtration (eGFR) | What should be happening |
|---|---|
| Below 30 mL/min Stage 4 |
Patient education on treatment options — dialysis and transplantation. Referral to a transplant centre. This is a referral point, not a dialysis preparation point. |
| Below 20 mL/min | Preemptive transplantation should be attempted in all patients where it is possible. |
| Below 10 mL/min | Dialysis, if a transplant has not happened. |
The purpose of referring at eGFR 30 rather than 20 is time. The patient needs time to understand the options, complete the transplant evaluation, and — most importantly — find a potential donor. That process cannot be compressed into the last weeks before dialysis.
Is a transplant more expensive than dialysis?
No — it is considerably cheaper. The cost of caring for a kidney transplant patient is less than one third of the cost of long-term dialysis.
Preemptive transplantation reduces it further by avoiding the expensive complications: delayed graft function, acute rejection, graft failure. Where cost is raised as an obstacle, it is worth asking over what time period the comparison was made.
International guidance sets a target of raising preemptive transplants from 26% to 50% of all transplants. That target exists because most patients who could have been transplanted before dialysis are not.
The usual reason is not medical. It is that nobody referred them in time.
What to do with this
- Know your eGFR. If it is below 30 and transplantation has not been discussed with you, raise it yourself.
- Start looking for a living donor early. This is the step that takes longest and the one most often left too late.
- Ask how long the evaluation takes at your centre. If the preparation period runs to months, the preemptive window may close while you wait.
- Avoid unnecessary blood transfusions while on dialysis — each one can raise antibodies and narrow your donor options later.
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.
Send us your eGFR before you start dialysis
If your kidney function is falling and no one has raised transplantation, send us your recent tests. We will tell you whether the preemptive window is still open in your case.
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. Thresholds and referral practice differ between patients and centres. Always consult your own nephrologist or transplant centre before making decisions about your treatment.
References
- Abecassis M, Bartlett ST, Collins AJ, et al. Kidney transplantation as primary therapy for end-stage renal disease: a National Kidney Foundation / Kidney Disease Outcomes Quality Initiative (NKF/KDOQI) conference. Clin J Am Soc Nephrol 2008;3:471–80.
- Mange KC, Joffe MM, Feldman HI. Effect of the use or nonuse of long-term dialysis on the subsequent survival of renal transplants from living donors. N Engl J Med 2001;344:726–31.
- Innocenti GR, Wadei HM, Prieto M, et al. Preemptive living donor kidney transplantation: do the benefits extend to all recipients? Transplantation 2007;83:144–9.
- Davis CL. Preemptive transplantation and the transplant first initiative. Curr Opin Nephrol Hypertens 2010.
- OPTN Minority Affairs Committee. Educational guidance on patient referral to kidney transplantation, 2015.
