Primary Hyperoxaluria
A Rare Genetic Disorder Leading to Kidney Stones & Kidney Failure
A hereditary condition where the liver produces excessive oxalate, which accumulates in the kidneys and other organs, causing recurrent kidney stones, damage, and eventual kidney failure if untreated.
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How Primary Hyperoxaluria Progresses
Liver Enzyme Defect
Excess oxalate productionOxalate Crystals
Kidney stone formationKidney Damage
Progressive declineKidney Failure
Transplant neededImportant: Systemic Disease
Bones
Eyes
Heart
Oxalate may deposit in multiple organs in advanced stages (systemic oxalosis)
What is Primary Hyperoxaluria?
Primary Hyperoxaluria is a rare genetic condition where the liver produces excessive oxalate due to an enzyme deficiency.
This excess oxalate combines with calcium to form crystals, which deposit in the kidneys, leading to recurrent kidney stones, kidney damage, and progressive decline in kidney function.
In advanced stages, oxalate may deposit in other organs (systemic oxalosis).
Early Signs & Symptoms
Recurrent kidney stones (often from childhood)
Blood in urine
Pain during urination or flank pain
Frequent urinary infections
Reduced kidney function (later stages)
Causes & Risk Factors
Primary Cause
Genetic mutation affecting liver enzymes (AGXT, GRHPR, HOGA1)
Risk Factors
- Family history
- Early onset kidney stones
- Consanguinity (in some cases)
Disease Progression
Early Stage
Recurrent kidney stones
Normal kidney function
Early intervention critical
Moderate Stage
Increasing stone formation
Kidney damage begins
Advanced Stage
Declining kidney function
Oxalate buildup
End Stage (Kidney Failure)
Dialysis or transplant required
Diagnosis & Tests
Urine oxalate levels
Blood tests
Creatinine, GFRGenetic testing
Imaging
Kidney stones detectionLiver enzyme evaluation
Check Your Risk Level
Understand your condition and next steps
Treatment Options (Before Transplant)
1. High Fluid Intake
- Helps reduce oxalate concentration
2. Medications
- Vitamin B6 (in some cases)
- Crystal inhibitors
3. Dietary Adjustments
- Low oxalate diet
4. Dialysis (Advanced Stage)
- Removes oxalate but not sufficient alone
When is Transplant Needed?
Kidney Transplant
For kidney failure
Combined Liver-Kidney Transplant
Required in some cases to correct enzyme defect
Primary Hyperoxaluria Needs Specialized Planning
Get expert guidance for complex cases
Important: Kidney Transplant Alone May Not Be Sufficient
In some cases, kidney transplant alone has recurrence risk. Combined liver-kidney transplant corrects the root cause.
Dialysis vs Transplant
Dialysis
Partial oxalate removal • Limited long-term outcome
Transplant
Definitive correction (with liver) • Better outcomes
Transplant Options
Kidney Transplant
For kidney failure cases
Recurrence riskCombined Liver-Kidney Transplant
Treats root cause + kidney failure
Definitive treatmentSwap Transplant
Useful in donor mismatch
Alternative optionGet My Treatment Plan
Cost & Planning
Costs depend on:
Type of transplant (kidney vs combined)
Hospital & expertise
Disease severity
Download Guide
Transplant Planning Guide for Rare Kidney Diseases
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Find Transplant Specialists
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Patient Resources
Kidney stone prevention guide
Genetic counseling
Pre-transplant workup
Frequently Asked Questions
Recurrent kidney stones may indicate a deeper problem.
Early diagnosis can prevent severe complications. Start early. Get clarity.