Weekly issue 2026-W43 ·
Polycystin dysfunction and cardiac electrical abnormalities in ADPKD
Plain language
Autosomal dominant polycystic kidney disease (ADPKD) can affect the heart and blood vessels as well as the kidneys. This narrative review summarizes research on how changes in the PKD1 and PKD2 genes — which make the polycystin-1 and polycystin-2 proteins — may influence heart muscle cells and the heart's electrical system. Disrupted calcium signaling, cell stress, and scarring can contribute to enlargement of the heart's main pumping chamber and electrical rhythm changes such as QT interval prolongation or atrial fibrillation. The review brings together laboratory and clinical studies to encourage closer attention to heart rhythm health in ADPKD; it does not report a new clinical trial.
Clinical note
Narrative review (Am J Nephrol) examining molecular and clinical links between polycystin-1/polycystin-2 (PKD1/PKD2) dysfunction and cardiac electrical remodeling in ADPKD. Reviews how impaired calcium homeostasis, mechanotransduction, and mitochondrial function in renal and cardiac tissue — alongside RAAS activation, TGF-driven fibrosis, and oxidative stress — contribute to structural and electrical remodeling, clinically manifesting as QT/QTc prolongation, left ventricular hypertrophy, atrial fibrillation, and ventricular arrhythmias. Discusses ECG monitoring, cardiac imaging, biomarkers, and iPSC-derived cardiomyocyte platforms for translational screening. Narrative synthesis without new primary cohort or trial data.
Question for your next visit
Do I need any heart checks, such as an electrocardiogram or echocardiogram, as part of my routine ADPKD care?