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Overview
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Background
Sobetirome (3,5-dimethyl-4[(4'-hydroxy-3'-isopropylbenzyl)-phenoxy] acetic acid, also known as GC-1 and QRX-431, is a member of a class of compounds known as selective thyromimetics.It was firstly developed by Thomas Scanlan’s group at the University of California-San Francisco (UCSF) in 1995 1.
In cholesterol-fed rats, sobetirome was shown to lower plasma cholesterol in a dose-dependent manner by up to 75% of untreated controls. In hypercholesterolemic mice, sobetirome was failed to induce LDL receptor mRNA expression. In different mouse models, sobetirome and T-0681 were shown to promote bile acid production and biliary sterol secretion. In cynomolgus monkeys, sobetirome was shown to reduce plasma cholesterol in a dose-dependent manner by up to 30%. Both sobetirome and T-0681 were shown to increase hepatic expression of the HDL receptor (scavenger receptor-BI, SR-BI) in animals.
In Phase I clinical trials, Sobetirome was shown to be generally well tolerated at all doses studied and proof of the therapeutic concept of cholesterol lowering was clearly demonstrated 1.1. Tancevski I, Demetz E, Eller P. Sobetirome: a selective thyromimetic for the treatment of dyslipidemia. Recent Pat Cardiovasc Drug Discov. 2011 Jan;6(1):16-9.
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Overview