Clinical Study

A Phase I/II Clinical Trial of Belinostat (PXD101) in Combination with Doxorubicin in Patients with Soft Tissue Sarcomas

Table 4

Pharmacokinetic parameters of belinostat (Bel) following administration of Bel alone (cycle 1 day 4) or in combination with doxorubicin (cycle 1 day 5).

Occasion600 mg/m2 Bel + 50 mg/m2 doxorubicin600 mg/m2 Bel + 75 mg/m2 doxorubicin800 mg/m2 Bel + 75 mg/m2 doxorubicin1000 mg/m2 Bel + 75 mg/m2 doxorubicin
Day 4Day 5Day 4Day 5Day 4Day 5Day 4Day 5
()()()()()()()()

(ng⋅h/mL)10900 (16.2)10400 (22.3)9670 (40.0)10400 (24.7)12200 (28.5)14600 (26.0)23100 (35.4)22100 (43.2)
(ng/mL)21100 (13.6)18300 (36.2)16800 (69.2)17400 (45.1)21400 (44.9)26400 (30.0)41100 (35.0)37000 (59.1)
(h)0.533 (0.500–0.550)0.567 (0.550–0.583)0.567 (0.500–0.783)0.517 (0.467–0.667)0.533 (0.500–0.583)0.533 (0.483–0.583)0.617 (0.500–0.750)0.633 (0.517–1.60)
(h)24.5 (22.4–24.6)17.0 (17.0–20.1)24.0 (8.55–24.5)24.5 (16.2–24.7)23.7 (8.47–24.6)15.1 (8.50–24.6)8.65 (1.05–24.0)8.72 (8.50–24.7)
(norm)18.2 (16.2)17.3 (22.3)16.1 (40.0)17.3 (24.7)15.3 (28.5)18.2 (26.0)23.1 (35.4)22.1 (43.2)
(norm)35.2 (13.6)30.5 (36.2)28.0 (69.2)28.9 (45.1)26.8 (44.9)32.9 (30.0)41.1 (35.0)37.0 (59.1)
(h)NC (NC)2.53 (NC)3.77 (136.4)4.83 (45.7)1.91 (129.8)2.14 (114.9)1.48 (71.3)2.13 (119.4)
CL (L/h)NC (NC)106 (NC)129 (61.8)111 (12.1)127 (40.5)91.0 (18.1)81.6 (39.9)85.2 (41.0)
(L)NC (NC)72.8 (NC)149 (365.2)90.8 (7.1)107 (195.5)58.3 (29.5)51.0 (45.1)57.6 (61.8)

: number of patients studied.
Median (min–max).
(norm): normalised for dose.
NC: not calculable.
: 3.
: 4.
: 18.
: 1; individual parameter presented.