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. Author manuscript; available in PMC: 2012 Jan 24.
Published in final edited form as: Cancer Chemother Pharmacol. 2010 Jan 28;66(5):927–933. doi: 10.1007/s00280-010-1242-z

Table 5. Topotecan pharmacokinetics.

Dose level
(mg/m2)
Plasma total
(ng/ml) (No. Pts)
Plasma lactone
(ng/ml)
% Plasma lactone CSF total
(ng/ml)
CSF lactone
(ng/ml)
CSF/plasma ratio (%)
0.25 1.02 (3) 0.42 (1) 34.3 ND ND
0.5 2.48 (3) 1.07 (3) 43.1 0.45 ND 17.8
0.75 2.74 (4) 0.54 (4) 23.2 0.76 ND 21.8
1.0 4.15 (5) 1.36 (5) 34.8 1.09 0.5 (1) ND (3) 28.0

ND Not detectable