GSK 3008348 hydrochloride is a small molecule integrin αvβ6 antagonist , extracted from patent WO/2014154725A1, example 1. The affinity (pIC50) for the human - a 6 protein in the Fluorescence Polarisation Assay for GSK 3008348 (hydrochloride) is 8.1, whereas its affinity in the cell Adhesion Assays was for: ανβ6 (pIC50 = 8.4); ανβ3 (pIC50 = 6); ανβ5 (pIC50 = 6.9); ανβ8 (pIC50 = 7.7).