ENPP1-Fc prevents mortality and vascular calcifications in rodent model of generalized arterial calcification of infancy
Ronald A Albright, Paul Stabach, Wenxiang Cao, Dillon Kavanagh, Isabelle Mullen, Alexander A Braddock, Mariel S Covo, Martin Tehan, Guangxiao Yang, Zhiliang Cheng, Keith Bouchard, Zhao-Xue Yu, Stephanie Thorn, Xiangning Wang, Ewa J Folta-Stogniew, Alejandro Negrete, Albert J Sinusas, Joseph Shiloach, George Zubal, Joseph A Madri, Enrique M De La Cruz, Demetrios T Braddock, Ronald A Albright, Paul Stabach, Wenxiang Cao, Dillon Kavanagh, Isabelle Mullen, Alexander A Braddock, Mariel S Covo, Martin Tehan, Guangxiao Yang, Zhiliang Cheng, Keith Bouchard, Zhao-Xue Yu, Stephanie Thorn, Xiangning Wang, Ewa J Folta-Stogniew, Alejandro Negrete, Albert J Sinusas, Joseph Shiloach, George Zubal, Joseph A Madri, Enrique M De La Cruz, Demetrios T Braddock
Abstract
Diseases of ectopic calcification of the vascular wall range from lethal orphan diseases such as generalized arterial calcification of infancy (GACI), to common diseases such as hardening of the arteries associated with aging and calciphylaxis of chronic kidney disease (CKD). GACI is a lethal orphan disease in which infants calcify the internal elastic lamina of their medium and large arteries and expire of cardiac failure as neonates, while calciphylaxis of CKD is a ubiquitous vascular calcification in patients with renal failure. Both disorders are characterized by vascular Mönckeburg's sclerosis accompanied by decreased concentrations of plasma inorganic pyrophosphate (PPi). Here we demonstrate that subcutaneous administration of an ENPP1-Fc fusion protein prevents the mortality, vascular calcifications and sequela of disease in animal models of GACI, and is accompanied by a complete clinical and biomarker response. Our findings have implications for the treatment of rare and common diseases of ectopic vascular calcification.
Conflict of interest statement
R.A.A. and D.T.B. are co-inventors of a pending patent application owned by Yale University related to these studies. Z.C., K.B. and Z.-X.Y. are employees of Alexion Pharmaceuticals, Inc. The remaining authors declare no competing financial interest.
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