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. Author manuscript; available in PMC: 2010 Mar 1.
Published in final edited form as: Curr Opin Nephrol Hypertens. 2009 Mar;18(2):99. doi: 10.1097/MNH.0b013e3283262ab0

Table 1. Novel treatments of PKD.

Drug Mechanism Preclinical studies in animal models Clinical studies Results/Comments
Non orthologous Orthologous
Triptolide Stimulates polycystin 2-dependent calcium release Kidney specific Pkd 1-/- mouse Improved renal function
CFTR Inhibitors Interferes with fluid secretion Kidney specific Pkd 1-/- mouse Improved renal function
Octreotide Inhibits cAMP PCK rat Decreased the formation of cysts in the liver and kidney but no improvement in renal function.
Randomized crossover placebo-controlled Smaller increase in kidney volume
Vasopressin antagonists Lowers cAMP pcy mouse PCK rat Pkd2 (ws25/-) mouse Lowered kidney weights,Cr, BUN
PCK and Brattleboro rat PCK rats that lacked vasopressin show reduced cyst formation
ongoing TEMPO, a phase III study is underway
Pioglitazone Possibly inhibits β-catenin signaling Pkd1-/- mouse Improved phenotype and molecular defects.
Roscovitine Inhibits cyclin dependent kinases jck mouse cpk mouse Intermittent administration of roscovitine showed a long lasting benefit
MAPK/ERK inhibitor Inhibits MAPK/ERK signaling pcy mouse Kidney-specific Pkd1-/- mouse Decreased cystic index in the pcy mouse but no beneficial effect in the kidney-specific Pkd1 mutant mouse
Src Inhibition Decreases ErbB1 and ErbB2 activity bpk mouse PCK rat Src inhibition ameliorated renal and biliary lesions
mTOR inhibitors Prevents mTOR mediated cell growth Han:SPRD rat oprk-rescue mutant mouse, bpk mouse Retrospective studies Decreased kidney volume in one study. Second study showed decrease in liver volume but not in kidney volume.
Etanercept Inhibits TNF-α Pkd2+/- mouse TNF-α stimulated and etanercept inhibited cyst formation.