This study will investigate the effect of hepatic impairment on the pharmacokinetics, pharmacodynamics, safety and tolerability of GK Activator (2) in type 2 diabetes patients with mild and moderate hepatic impairment. Patients with type 2 diabetes, and with normal hepatic function, or mild or moderate hepatic impairment, will receive a single dose of GK Activator (2) 100mg po before breakfast, for assessment of pharmacokinetic, pharmacodynamic and safety parameters. The anticipated time on study treatment is <3 months, and the target sample size is <100 individuals.