Claims for Patent: 9,561,197

Summary for Patent: 9,561,197

Title:	Methods of therapeutic monitoring of phenylacetic acid prodrugs
Abstract:	The present disclosure provides methods for adjusting the dosage of PAA prodrugs (e.g., HPN-100, PBA) based on measurement of PAA and PAGN in plasma and calculating the PAA:PAGN ratio so as to determine whether PAA to PAGN conversion is saturated.
Inventor(s):	Scharschmidt; Bruce (San Francisco, CA), Mokhtarani; Masoud (Walnut Creek, CA)
Assignee:	Horizon Therapeutics, LLC (Lake Forest, IL)
Application Number:	13/610,580
Patent Litigation and PTAB cases:	See patent lawsuits and PTAB cases for patent 9,561,197
Patent Claims:	1. A method of treating a urea cycle disorder in a subject comprising administering to a subject having a plasma PAA to PAGN ratio outside the target range of 1 to 2, a dosage of glyceryl tri-[4-phenylbutyrate] (HPN-100) effective to achieve a plasma PAA to PAGN ratio within the target range of 1 to 2. 2. A method of treating a urea cycle disorder in a subject comprising administering to a subject having a plasma PAA to PAGN ratio outside the target range of 1 to 2.5, a dosage of glyceryl tri-[4-phenylbutyrate] (HPN-100) effective to achieve a plasma PAA to PAGN ratio within the target range of 1 to 2.5.