Autosomal dominant polycystic kidney disease (
ADPKD) is a systemic disorder mainly involving the kidney. It affects one in 400-1000 live births. Early
hypertension and progressive
renal failure due to massive enlargement of
cysts and
fibrosis are hallmarks of the disease.
ADPKD accounts for ~5-10% of cases requiring
renal replacement therapy. But not only the kidneys are affected in
ADPKD:
cysts also occur in other organs such as the liver, pancreas, arachnoid membrane and seminal vesicles. Non-cystic manifestations of the diseases are
intracranial aneurysms,
hernias and valvular abnormalities. Complications in
ADPKD usually result from kidney involvement and include
cyst bleeding and
cyst infection. However, serious extrarenal features such as subarachnoid haemorrhage can also occur. There is no specific treatment for
ADPKD currently, but many molecules targeting up- or downregulated molecules in the renal epithelial cells are being tested. A clinical trial using
tolvaptan (a
vasopressin receptor antagonist) has demonstrated efficacy, while mTOR inhibitors have shown no positive effect in
ADPKD. ACEIs and ARBs are the drugs of choice for treating
hypertension in
ADPKD. Until a specific therapy becomes available, early treatment of
hypertension and lifestyle changes are encouraged.