Background:

GLPG0492 is a novel selective androgen receptor modulator; exhibited anabolic activity on muscle, strongly dissociated from the androgenic activity on prostate after oral dosing.IC50 value:Target: AR modulatorGLPG0492 has very good pharmacokinetic properties, including bioavailability in rat (F >50%), and is currently under evaluation in phase I clinical trials [1]. GLPG0492 is a new non-steroidal selective androgen receptor modulator that is currently under development for musculo-skeletal diseases such as sarcopenia and cachexia. In acute exhaustion tests, a surrogate of the 6-min walking test used in DMD patients, GLPG0492 preserved running performance, whereas vehicle- or comparator-treated animals showed a significant increase in fatigue (30-50%) [2]. GLPG0492 treatment partially prevents immobilization-induced muscle atrophy with a trend to promote muscle fiber hypertrophy in a dose-dependent manner. Interestingly, GLPG0492 was found as efficacious as TP at reducing muscle loss while sparing reproductive tissues. Furthermore, gene expression studies performed on tibialis samples revealed that both GLPG0492 and TP were slowing down muscle loss by negatively interfering with major signaling pathways controlling muscle mass homeostasis [3].

[1]. Nique F, et al. Identification of a 4-(hydroxymethyl)diarylhydantoin as a selective androgen receptor modulator. J Med Chem. 2012 Oct 11;55(19):8236-47. [2]. Cozzoli A, et al. GLPG0492, a novel selective androgen receptor modulator, improves muscle performance in the exercised-mdx mouse model of muscular dystrophy. Pharmacol Res. 2013 Jun;72:9-24. [3]. Blanqué R, et al. Characterization of GLPG0492, a selective androgen receptor modulator, in a mouse model of hindlimb immobilization. BMC Musculoskelet Disord. 2014 Sep 3;15:291.