Genetic kidney disorders are caused by changes in a gene and can run in families. Congenital disorders are structural differences present from birth, such as a single kidney, a blocked drainage system or urine refluxing back towards the kidney. The two groups overlap.
The most common inherited kidney disease in adults is autosomal dominant polycystic kidney disease (ADPKD). Others include Alport syndrome, Fabry disease, cystinosis, nephronophthisis and hereditary tubular disorders such as Gitelman and Bartter syndromes. Together, inherited causes explain at least one in ten cases of adult kidney failure and most cases in children.
Symptoms
- Often none for years; found through family screening or a scan
- High blood pressure at a young age
- Blood or protein in the urine
- Flank pain, kidney stones or repeated urine infections
- Enlarged kidneys felt as abdominal fullness in polycystic disease
- Hearing loss or eye changes in Alport syndrome
- Poor growth, excessive thirst and urination in affected children
- Kidney swelling seen on pregnancy ultrasound
Causes and risk factors
ADPKD is caused by variants in PKD1 or PKD2 and each child of an affected parent has a one in two chance of inheriting it. Alport syndrome involves type IV collagen genes and is often X-linked, so males are more severely affected. Recessive disorders, such as autosomal recessive polycystic kidney disease, cystinosis and many nephronophthisis types, appear when both parents carry a variant and are more common where parents are related. Congenital anomalies of the kidney and urinary tract arise during fetal development, sometimes from single gene changes and often without an identifiable reason.
How it is diagnosed
- Family history and pedigree: A three-generation history often points to the pattern of inheritance.
- Ultrasound, CT or MRI: Shows cysts, kidney size, scarring or drainage abnormalities; MRI kidney volume helps predict progression in ADPKD.
- Urine and blood tests: Protein, blood, kidney function and electrolyte patterns typical of tubular disorders.
- Genetic panel or exome sequencing: A blood or saliva test covering known kidney genes; results take several weeks and should come with genetic counselling.
- Kidney biopsy: Sometimes needed, for instance to examine the basement membrane in suspected Alport syndrome.
- Hearing and eye examination: Looks for features outside the kidney.
Treatment options
- Blood pressure control: ACE inhibitors or ARBs slow damage in most inherited kidney diseases and are started early in Alport syndrome.
- Tolvaptan: Slows cyst growth in adults with rapidly progressing ADPKD; needs regular liver blood tests.
- Disease-specific therapy: Enzyme replacement or chaperone therapy for Fabry disease, cysteamine for cystinosis, electrolyte supplements for Gitelman and Bartter syndromes.
- Urological surgery: Correction of obstruction or severe reflux in congenital anomalies, usually in childhood.
- Dialysis and transplantation: Transplant results are generally good because most inherited diseases do not return in the new kidney. Related donors must be tested for the family condition.
- Genetic counselling and family planning: Includes options such as preimplantation genetic testing during IVF for families with a known variant.
When it is urgent
Sudden severe flank pain, visible blood in the urine with fever, a sudden very severe headache in someone with polycystic kidney disease (possible brain aneurysm), or a child who stops passing urine needs emergency care locally.
Travelling to Türkiye for treatment
These are lifelong conditions that need regular local follow-up. A visit can usefully offer a consolidated work-up: imaging, a genetic panel with counselling, screening of relatives, or assessment of a related donor before transplantation. Genetic results usually arrive after you have returned home, so agree in advance how they will be explained to you.
Send your reports, scans and a short history and a Clinic-Y coordinator replies within 24 hours with suitable teams and written, all-inclusive proposals side by side. Reviewing your case is free.
الأسئلة المتكررة
If my parent has polycystic kidneys, should I be tested?
An ultrasound in adulthood is the usual first step. Discuss timing and the implications for insurance and family planning with a doctor or genetic counsellor first.
Does a negative genetic test rule out inherited disease?
No. Current panels find a cause in roughly a third to a half of suspected cases, depending on the setting. A negative result lowers but does not remove the possibility.
Can I donate a kidney to my affected relative?
Only if you are shown not to carry the condition, which may need genetic testing as well as imaging.
Can it be prevented in my children?
When the family variant is known, preimplantation genetic testing with IVF or prenatal diagnosis are options to discuss with a genetics team.