TABLE 2

Relative abundance of urinary, biliary, and fecal metabolites of BIIB021 in rats and dogs after oral administration of [14C]BIIB021 (% of total administrated dose)

MetaboliteRatDog
UrineFeces (Bile)TotalUrineFecesTotal
BIIB021ND0.92 (0.29)0.920.101.081.18
M1ND6.066.06
M21.387.51 (1.32)8.891.9510.812.8
M31.273.07 (4.65)4.341.121.082.20
M41.04(10.8)1.0415.015.0
M50.872.81 (1.26)3.680.120.12
M61.203.18 (1.86)4.382.501.504.00
M714.215.6 (10.2)29.81.8511.613.4
M8(2.47)
M90.28(0.66)0.28