I'm 42 with creatinine 1.3. Can ADPKD cysts be treated?

Question

Hello doctor,

I am a 42-year-old individual recently diagnosed with autosomal dominant polycystic kidney disease (ADPKD). My ultrasound revealed multiple large cysts on both kidneys, and my serum creatinine has gradually increased to 1.3 over the past year. My mother also had this condition and eventually required dialysis.

Could you please explain what causes these cysts and whether they can be removed or treated? I have heard about a medication called Tolvaptan. Does it help slow the progression of the disease?

Also, I would appreciate guidance on what steps I can take to protect my kidney function in the long term. Please help.

Thank you in advance.

Answer 1

Hi,

Welcome to icliniq.com.

Autosomal Dominant Polycystic Kidney Disease (ADPKD) is a genetic disorder in which multiple small, fluid-filled sacs (called cysts) gradually develop in both kidneys. These cysts enlarge over time and may eventually impair kidney function.

Many individuals with ADPKD do not experience symptoms in the early stages. The condition is often diagnosed in the third or fourth decade of life, typically when complications such as high blood pressure (hypertension) or changes in kidney function become noticeable.

Genetic cause

ADPKD is inherited in an autosomal dominant pattern, meaning:
- A person only needs one copy of the defective gene to develop the disease.
- Each child of an affected parent has a 50 % chance of inheriting the condition.
It is most commonly caused by mutations in the PKD1 or PKD2 genes:
- PKD1 mutation leads to a more severe and faster-progressing form.
- The PKD2 mutation generally results in slower disease progression.

Because it runs in families, screening of close relatives (including siblings and children) is recommended. Early detection may improve outcomes by allowing for timely management.

Treatment and disease management

While there is currently no complete cure for ADPKD, I would suggest the following management strategies are effective:

Medication: Tolvaptan

Tolvaptan is a vasopressin V2-receptor antagonist.
- It works by reducing the rate at which cysts grow and helps preserve kidney function.
It is most effective when started early in the disease and in patients who are at high risk of rapid progression.
Important precautions with Tolvaptan:
- Not recommended during pregnancy.
- Not typically used in elderly patients.
- Requires regular liver function tests, as it can affect liver enzymes.

Kidney protection measures

To help protect your kidneys and slow disease progression, I would advise you to:

Maintain good blood pressure control:
- Target: Below 130/80 mmHg, usually using angiotensin-converting enzyme (ACE) inhibitors or angiotensin receptor blockers (ARBs).
Stay well hydrated, but avoid excessive fluid intake.
- Overhydration may lead to low sodium levels (hyponatremia).
Follow a kidney-friendly diet:
- Low in sodium.
- Balanced in protein and phosphorus.
Avoid smoking and limit alcohol consumption.
Attend regular medical follow-ups and laboratory monitoring.
- Includes kidney function tests (e.g., serum creatinine, estimated glomerular filtration rate or eGFR) and imaging studies.

Surgical considerations:

Surgery is not routinely recommended, as it does not treat the underlying cause of the disease.
However, it may be considered in the following specific situations:
- Persistent or severe pain due to large cysts.
- Infection within a cyst that does not respond to medication.
- Significant compression of nearby organs.

I hope this helps.

Kindly revert so I can assist you further.

Thank you.