GSK3179106

GSK3179106 (GSK-3179106, GSK 3179106) is a potent, selective, first-in-class and gut-restricted RET kinase inhibitor with IC50 of 0.4 and 11 nM in the biochemical assay and cellular assay respectively, 273-fold selectivity over KDR; possesses good kinase selectivity, only 26 out of a set of >300 recombinant kinases were found to be inhibited at 1 uM; GSK3179106 dosed orally at 10 mg/kg for 3.5 days BID reduced the visceromotor response to colorectal distension in comparison to rats given an acetic acid enema and dosed with vehicle, GSK3179106 has been developed for the treatment of IBS in a clinical setting.Irritable Bowel Syndrome, Phase 1 Clinical (In Vitro) :GSK3179106 (10 nM-100 μM; 8 days for TT cells, 3 days for SK-N-AS and A549 cells) inhibits the proliferation of the RET-dependent TT cell line with a mean IC50 value of 25.5 nM however has no effect on the proliferation of the RET-independent SK-NAS and A549 cell lines (mean IC50>10 μM and IC30>17 μM, respectively) .GSK3179106 inhibits RET phosphorylation in SK-N-AS cells and TT cells with mean IC50s of 4.6 nM and 11.1 nM, respectively. (In Vivo) :GSK3179106 (3 or 10 mg/kg; orally; for 3.5 days BID) reduces the visceromotor response (VMR) in comparison to rats given an acetic acid enema and dosed with vehicle.