TABLE 1

Metabolite formation activities of [14C]apixaban in HLM from adult and pediatric donors and HIM at 2.5 and 25 μM drug concentrations

HLM from adult and pediatric donors and HIM at 1 mg/ml proteins were incubated with 2.5 or 25 μM apixaban in the presence of NADPH at 37°C for 60 min.

MicrosomesFormation of Metabolites
2.5 μM25 μM
M2M4M7M2M4M7
pmol/min/mg protein
HLM (adult)0.76 ± 0.110.19 ± 0.023.49 ± 0.918.39 ± 2.442.25 ± 0.9933.64 ± 12.9
HLM (1–6 years)0.68 ± 0.39Trace0.71 ± 0.173.44 ± 0.931.05 ± 0.539.84 ± 3.62
HLM (<1 year)0.65 ± 0.090.20 ± 0.083.02 ± 0.979.96 ± 3.173.12 ± 0.9937.67 ± 19.9
HIM (adult)0.16 ± 0.020.13 ± 0.021.47 ± 0.072.08 ± 0.462.01 ± 0.4710.3 ± 3.87