Focal segmental glomerulosclerosis (FSGS) is a kidney disease that causes scarring in parts of the glomeruli, the tiny structures responsible for filtering blood.
FSGS can lead to significant protein loss in the urine and, in some patients, progressive loss of kidney function. When kidney disease becomes advanced and reaches kidney failure, kidney transplantation may be considered as one form of kidney replacement therapy.
However, FSGS presents an important consideration that is different from many other causes of kidney failure: the disease can recur in a transplanted kidney in some patients.
The possibility of recurrence does not mean that a person with FSGS cannot receive a transplant. Instead, it makes accurate diagnosis, assessment of the type and cause of FSGS, transplant planning and close monitoring particularly important.
At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides individualized evaluation for patients with FSGS, advanced kidney disease and kidney-transplant-related concerns.
What Is FSGS?
FSGS stands for focal segmental glomerulosclerosis.
The name describes the pattern of kidney injury:
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Focal means that only some glomeruli are affected.
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Segmental means that only part of an affected glomerulus is scarred.
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Glomerulosclerosis refers to scarring of the glomerulus.
FSGS is not a single disease with one identical cause in every patient.
It can occur in different forms, including:
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Primary FSGS
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Secondary FSGS
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Genetic or familial forms
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FSGS associated with other kidney or systemic conditions
Determining which type is present can be important when considering long-term treatment and kidney transplantation.
Can Someone With FSGS Have a Kidney Transplant?
Yes.
FSGS itself does not automatically exclude a patient from kidney transplantation.
Transplant eligibility is determined through a comprehensive assessment that considers factors such as:
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Overall health
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Kidney disease stage
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Cause and type of FSGS
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Cardiovascular health
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Infection status
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Other medical conditions
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Previous transplant history
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Suitability for surgery
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Ability to take long-term immunosuppressive medicines
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Availability and suitability of a donor
The transplant team also considers the potential risk of FSGS returning in the transplanted kidney.
Why Can FSGS Return After Kidney Transplant?
One of the most important questions surrounding FSGS kidney transplant is recurrence.
In some patients with primary FSGS, the disease can return after transplantation.
Researchers believe that, in certain forms of primary FSGS, circulating factors in the blood may contribute to injury of the filtration barrier in the transplanted kidney.
This is different from FSGS caused by a structural or adaptive response, where the underlying cause may not be present in the new kidney.
Therefore, the risk of recurrence depends strongly on the type and cause of FSGS.
Is FSGS Recurrence Common After Transplant?
FSGS recurrence is clinically important, but the risk is not the same for every patient.
Published studies report varying recurrence rates because patient populations, definitions, disease classifications and study methods differ.
The risk tends to be more relevant in patients with primary or presumed primary FSGS than in many cases of secondary FSGS.
Genetic forms may behave differently, and some genetic causes may have a relatively low risk of recurrence because the underlying defect is intrinsic to the patient's own kidney rather than caused by a circulating factor.
For this reason, transplant counselling should be individualized rather than based on one recurrence percentage.
What Increases the Risk of FSGS Recurring?
Several features may help doctors estimate recurrence risk.
These can include:
Previous Rapid Progression
Patients whose original FSGS progressed rapidly to kidney failure may have a different recurrence profile from those with a slowly progressive disease.
Previous Transplant With Recurrence
If FSGS previously recurred in an earlier transplanted kidney, the risk in a subsequent transplant may be particularly important when planning treatment.
Disease Classification
Primary, secondary and genetic forms of FSGS do not have identical recurrence patterns.
Genetic Findings
Genetic testing may be considered in selected patients, particularly when there is a family history, young age at disease onset or other features suggesting inherited disease.
The transplant team may use all available clinical, pathological and genetic information to develop an individualized plan.
Does Every Type of FSGS Recur in a Transplanted Kidney?
No.
This distinction is important.
Primary FSGS is the form most associated with post-transplant recurrence.
Secondary FSGS develops as an adaptive response to another condition, such as reduced nephron mass, obesity or certain other kidney stresses. The underlying process may not necessarily affect the transplanted kidney in the same way.
Genetic FSGS is also different because the disease may result from a genetic defect affecting kidney structures. Depending on the gene involved, recurrence in a donor kidney may be less likely.
A kidney biopsy showing FSGS is therefore not always enough to determine recurrence risk. The complete clinical picture needs to be considered.
FSGS Before Kidney Transplant: What Should Be Evaluated?
Before transplantation, the nephrologist and transplant team may review:
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Original kidney biopsy
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FSGS subtype
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Previous medical records
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Proteinuria history
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Rate of kidney-function decline
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Previous response to treatment
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Family history
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Genetic testing when appropriate
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Previous transplant history
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Current medications
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Other medical conditions
This assessment helps determine whether the disease is likely to be primary, secondary or genetic and supports more informed transplant planning.
What Happens if FSGS Returns After Transplant?
FSGS recurrence can sometimes develop early after transplantation, although the timing can vary.
A significant increase in urinary protein, particularly heavy proteinuria, may be an important warning sign.
Doctors may monitor:
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Urine protein
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Urine albumin
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Serum creatinine
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eGFR
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Blood pressure
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Fluid status
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Kidney-transplant function
If recurrence is suspected, the transplant team may perform additional investigations, including a kidney transplant biopsy, when clinically appropriate.
Early recognition is important because treatment may be more effective when recurrence is identified promptly.
What Symptoms Can Recurrent FSGS Cause?
FSGS recurrence may initially be detected through laboratory testing rather than symptoms.
Possible findings include:
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Increasing protein in urine
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Foamy urine
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Rising creatinine
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Reduced kidney function
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Swelling of the feet or legs
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Weight gain from fluid retention
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High blood pressure
A transplant recipient should report new or increasing swelling, major changes in urine or other unexplained symptoms to the transplant team.
How Is Recurrent FSGS Treated After Transplant?
There is no single treatment that works for every case.
Depending on the clinical situation, specialists may consider therapies such as:
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Plasma exchange or plasmapheresis
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Immunomodulatory treatment
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Corticosteroids in selected cases
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Other immunosuppressive or targeted therapies in appropriate patients
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Supportive treatment to reduce proteinuria and control blood pressure
Treatment decisions depend on the suspected mechanism of recurrence, severity, transplant function and the patient's overall condition.
Some patients respond to treatment, while others may have persistent or difficult-to-treat recurrent disease.
Can Plasmapheresis Help Recurrent FSGS?
Plasma exchange has been used in the treatment of recurrent primary FSGS after transplantation, particularly when a circulating factor is suspected to be involved.
The procedure removes plasma from the blood and replaces it with another fluid.
The number and frequency of treatments vary according to the patient's response and the transplant team's protocol.
Plasma exchange is not appropriate for every patient with FSGS and should be undertaken only under specialist supervision.
Can Medicines Prevent FSGS Recurrence?
There is no universally proven medication regimen that guarantees prevention of FSGS recurrence in every transplant recipient.
Some transplant centers may consider preventive strategies in selected high-risk patients, but approaches vary according to the patient's history and the treating team's assessment.
The transplant team may instead focus heavily on:
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Identifying the FSGS subtype
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Assessing recurrence risk
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Monitoring urine protein very closely after transplantation
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Detecting recurrence early
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Starting appropriate treatment promptly when recurrence occurs
Does FSGS Affect Kidney Transplant Success?
FSGS can affect transplant outcomes when the disease recurs and causes injury to the transplanted kidney.
However, outcomes vary considerably.
A person with FSGS should not assume that transplantation will inevitably fail because of recurrence.
The outcome depends on multiple factors, including:
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Type of FSGS
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Recurrence risk
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Response to treatment
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Donor and recipient factors
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Rejection risk
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Infections
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Medication adherence
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Cardiovascular and other health conditions
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Long-term transplant monitoring
Individual prognosis should therefore be discussed with the transplant team rather than estimated from the diagnosis alone.
Can a Kidney Transplant Cure FSGS?
The answer depends on what is meant by “cure.”
A transplanted kidney can restore kidney filtration in a person whose native kidneys have reached kidney failure.
However, transplantation does not necessarily eliminate the underlying tendency for primary FSGS to recur.
If the disease recurs, it can affect the transplanted kidney.
In contrast, some secondary and genetic forms may have different recurrence behaviour.
Therefore, transplant should be understood as a treatment for kidney failure rather than a guaranteed cure for every underlying cause of kidney disease.
Living Donor Kidney Transplant and FSGS
A living donor may be considered when a suitable person is medically and ethically eligible to donate.
The decision regarding living donation involves extensive evaluation of:
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Donor kidney health
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Recipient medical condition
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Blood-group compatibility
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Tissue compatibility
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Immunological risk
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Surgical considerations
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FSGS recurrence considerations
The possibility of recurrence does not automatically rule out living-donor transplantation, but the risks and expected benefits need to be discussed carefully.
What Happens After FSGS Kidney Transplant?
Post-transplant monitoring is especially important.
Patients generally require regular assessment of:
Kidney Function
Blood creatinine and other tests help monitor how well the transplanted kidney is functioning.
Urine Protein
Proteinuria can be an early indicator of recurrent FSGS or other transplant-related problems.
Immunosuppressive Drug Levels
Anti-rejection medicines need careful dosing because insufficient treatment can increase rejection risk, while excessive exposure can cause toxicity and other complications.
Blood Pressure
Blood pressure control is important for protecting the transplant kidney and cardiovascular health.
Infection Monitoring
Immunosuppression increases susceptibility to certain infections, so patients need appropriate follow-up.
FSGS Recurrence Versus Kidney Transplant Rejection
An increase in creatinine after transplantation does not automatically mean that FSGS has returned.
Other possible causes include:
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Acute rejection
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Chronic rejection-related injury
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Dehydration
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Medication toxicity
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Infection
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Urinary obstruction
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Vascular complications
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Recurrent or new kidney disease
Additional tests may be needed to determine the cause.
Depending on the situation, evaluation can include blood tests, urine testing, ultrasound or Doppler imaging, drug-level assessment, antibody testing and transplant biopsy.
Can FSGS Return Years After Transplant?
Recurrence is often discussed in the early post-transplant period, but transplant recipients can develop kidney problems at different times after transplantation.
New proteinuria or declining graft function years after transplantation should therefore not be ignored.
The cause may be FSGS recurrence, rejection, medication-related injury, infection, obstruction or another condition.
Regular long-term transplant follow-up remains important.
What If the Transplanted Kidney Fails?
If recurrent FSGS or another complication eventually causes severe transplant dysfunction, the transplant team evaluates the patient's condition and available treatment options.
Depending on the situation, management may involve:
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Medical treatment
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Additional investigation
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Dialysis
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Evaluation for another transplant in selected patients
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Supportive kidney care
A failing transplant requires specialist assessment to determine the cause and appropriate next steps.
Why FSGS Diagnosis Matters Before Transplant
A diagnosis of FSGS based solely on the biopsy pattern may not tell the complete story.
The same pathological pattern can occur through different mechanisms.
For transplant planning, doctors may therefore want to know:
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Was the disease primary or secondary?
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Was there a genetic cause?
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How quickly did kidney function decline?
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Was there severe proteinuria?
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Did previous treatment work?
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Has the patient undergone transplantation before?
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Did FSGS recur in a previous graft?
Understanding these factors can improve individualized transplant counselling.
FSGS and Genetic Testing
Genetic evaluation may be appropriate for selected patients.
It can be particularly relevant when FSGS:
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Begins at a young age
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Occurs in several family members
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Has unusual clinical features
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Does not respond as expected to immunosuppressive treatment
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Is suspected to be part of an inherited kidney disorder
Genetic information can sometimes help distinguish forms of FSGS and may influence counselling about recurrence risk.
Not every patient with FSGS requires genetic testing, so the decision should be individualized.
Can FSGS Be Treated Before Kidney Failure?
Yes.
Treatment before kidney failure aims to reduce protein loss, control blood pressure and address the specific mechanism causing kidney injury.
Depending on the form of FSGS, treatment may include:
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Corticosteroids
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Other immunosuppressive medicines in selected primary FSGS
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Treatment of an underlying secondary cause
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Blood-pressure management
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Medicines that reduce proteinuria when appropriate
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Lifestyle and dietary measures
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Regular monitoring of kidney function
The treatment approach should be based on the FSGS subtype and the patient's clinical condition.
Diet and Lifestyle After Kidney Transplant for FSGS
After transplantation, dietary advice is individualized.
Patients may be advised to:
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Follow transplant-team dietary recommendations
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Maintain appropriate fluid intake
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Limit excessive sodium
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Follow food-safety precautions
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Maintain a healthy body weight
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Avoid unapproved supplements or herbal products
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Take transplant medicines exactly as prescribed
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Attend regular laboratory appointments
Dietary requirements can change depending on kidney function, medications, blood pressure, diabetes and other health factors.
Why Regular Follow-Up Is Important
FSGS and kidney transplantation both require long-term monitoring.
Follow-up can help identify:
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Recurrent proteinuria
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Changes in creatinine
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Rejection
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Medication toxicity
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Infections
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Blood-pressure problems
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Other transplant complications
Early investigation of an abnormal result can sometimes allow treatment to begin before substantial graft damage develops.
FSGS Kidney Transplant Evaluation at Prabhakar Bhurke Clinic
At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides individualized nephrology and transplant-related evaluation for patients with FSGS and advanced kidney disease.
Depending on the patient's clinical situation, evaluation may include:
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Review of previous kidney biopsy
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Assessment of FSGS subtype
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Kidney-function evaluation
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Proteinuria assessment
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Review of previous FSGS treatments
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Transplant-related medical assessment
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Evaluation of recurrence risk
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Post-transplant kidney-function monitoring
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Assessment of new proteinuria after transplantation
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Coordination of treatment when recurrent FSGS is suspected
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Long-term kidney transplant follow-up
Patients with FSGS may require coordinated care involving nephrology, transplant medicine, pathology, genetics and other specialists when appropriate.
Frequently Asked Questions About FSGS Kidney Transplant
Can FSGS patients get a kidney transplant?
Yes. FSGS does not automatically prevent kidney transplantation. Eligibility depends on overall health, kidney disease status, FSGS type and the transplant team's assessment.
Can FSGS come back after kidney transplant?
Yes. Recurrence can occur, particularly with primary FSGS. The risk varies according to disease type and individual factors.
Which type of FSGS is more likely to recur after transplant?
Primary FSGS is generally the form most associated with recurrence. Secondary and many genetic forms have different recurrence patterns.
Does FSGS always come back after transplant?
No. Recurrence does not occur in every patient. Risk assessment depends on the cause and characteristics of the original FSGS.
Can recurrent FSGS be treated after transplant?
Treatment may be possible. Depending on the situation, specialists may use plasma exchange and other therapies. Response varies between patients.
Can FSGS cause kidney transplant failure?
Recurrent FSGS can damage a transplanted kidney and may contribute to graft failure in some patients. However, transplant dysfunction can have many other causes and requires investigation.
Is a living donor kidney possible for someone with FSGS?
A living-donor transplant may be possible for selected patients. Donor and recipient suitability must be evaluated carefully.
Does FSGS require genetic testing before transplant?
Not everyone needs genetic testing. It may be particularly useful in selected patients with early-onset disease, family history or features suggesting inherited FSGS.
What is the most important test after transplant for recurrent FSGS?
There is no single test that answers every question. Monitoring urine protein and kidney function is important, and additional investigations such as transplant biopsy may be required when recurrence or another graft problem is suspected.
Conclusion
FSGS kidney transplant requires careful planning because FSGS is not one uniform disease and its recurrence risk differs between patients.
A person with FSGS who develops kidney failure may be considered for kidney transplantation after a comprehensive medical and transplant evaluation. Before transplantation, doctors may review the original biopsy, disease course, proteinuria, possible genetic factors and previous treatment response.
After transplantation, close monitoring of urine protein, creatinine and transplant kidney function is important. New or increasing proteinuria may require prompt investigation for recurrent FSGS or other causes of graft dysfunction.
FSGS recurrence can sometimes be treated with specialist therapies, although treatment response varies.
For patients with FSGS who are approaching kidney failure or who have concerns after transplantation, individualized assessment by a nephrologist and transplant physician can help guide treatment and long-term kidney care.
For specialist evaluation, consult Dr. Sandip Prabhakar Bhurke at Prabhakar Bhurke Clinic.
Medical Disclaimer
This article is intended for general educational and informational purposes only and should not be considered medical advice, diagnosis or treatment. FSGS includes different disease mechanisms, and the risk of recurrence after kidney transplantation varies between individuals. Transplant eligibility, recurrence risk, preventive strategies and treatment of recurrent FSGS must be determined by a qualified nephrologist and transplant team after reviewing the patient's medical history, kidney biopsy, laboratory results and other relevant information. Do not start, stop or change immunosuppressive medicines, steroids, blood-pressure medicines or other treatments without specialist guidance. New proteinuria, rising creatinine, swelling, reduced urine output, fever or other concerning symptoms after transplantation should be reported promptly to the transplant team.
