After 15 consecutive days of takeing 100mg Umorestat capsule of each participant, 2 mL of peripheral venous blood is collected at 3 h, 8 h and 24 h (D16) on the 15th day into the vacuum blood collection tube via EDTA anticoagulation for genotyping and metabolite determination.

After 15 consecutive days of takeing 200mg Umorestat capsule of each participant, 2 mL of peripheral venous blood is collected at 3 h, 8 h and 24 h (D16) on the 15th day into the vacuum blood collection tube via EDTA anticoagulation for genotyping and metabolite determination.

After 15 consecutive days of takeing 400mg Umorestat capsule of each participant, 2 mL of peripheral venous blood is collected at 3 h, 8 h and 24 h (D16) on the 15th day into the vacuum blood collection tube via EDTA anticoagulation for genotyping and metabolite determination.

After 15 consecutive days of takeing 600mg Umorestat capsule of each participant, 2 mL of peripheral venous blood is collected at 3 h, 8 h and 24 h (D16) on the 15th day into the vacuum blood collection tube via EDTA anticoagulation for genotyping and metabolite determination.

Genotyping is performed using the subjects' blood cells

Determine the drug metabolite profile: Serum samples were detected by ultra-high pergormance liquid tandem chromatography quadrupole time of flight mass spectrometry(LC-MS). Differential metabolites were screened by principal component analysis(PCA), orthogonal projections to latent structures-discriminant analysis(OPLS-DA) and Student's t-test. Then the hierarchical clustering analysis(HCA) was carried out for the screened differential metabolites.

To determine the relationship between genotyping and drug exposure, efficacy and safety: Employs PCR to amplify the regions of the genome containing each SNP, then use MassARRAY to detect mass differences between fragments differing by a single base. Use genotyping test results to do correlation analysis with drug concentration, safety results, and efficacy results to determine the relationship between different types of gene locus mutations and drug concentration, efficacy, and adverse reactions.