Table 2 Dosing and DLT summary by patient cohort

From: Phase Ib study of CP-868,596, a PDGFR inhibitor, combined with docetaxel with or without axitinib, a VEGFR inhibitor

Dose level

CP-856,596

Docetaxel

Axitinib

Patients evaluable for DLT in the dose-escalation cohorts a

Total number of patients

DLT ( n)

Median duration of treatment, months (range)

Median number of cycles administered (range)

Number of patients with dose reduction

1

60 mg BID

75 mg m–2

0

6

7

Febrile neutropenia (1)

3.45 (0.23–9.21)

4.0 (1.0–11.0)

0

2

100 mg BID

75 mg m–2

0

6

25

Febrile neutropenia (1)b

Nausea/vomiting (1)b

1.48 (0.23–8.36)

2.0 (1.0–11.0)

0

3

100 mg BID

100 mg m–2

0

6

7

None

2.07 (0.69–4.84)

2.0 (1.0–6.0)

0

4

60 mg BID

75 mg m–2

5 mg BID

9

9

Klebsiella pneumonae infection associated with febrile neutropenia (1)

Febrile neutropenia (1)

5.3 (1.97–12.47)

6.0 (3.0–16.0)

1

  1. Abbreviations: DLT=dose-limiting toxicity; BID=twice daily.
  2. aPatients evaluable for DLT either discontinued the study during cycle 1 because of toxicity or completed cycle 1.
  3. bDLT observed in patients enrolled into the expansion cohort.