< 50,000/mm3
3
2
- Anemia < 11 g/dL
55
47
< 8 g/dL
4
2
- Infections
23
15
- Febrile Neutropenia
2
2
• Hypersensitivity Reactionc
- All
36
31
- Severe†
0
<1
• Peripheral Neuropathy
- Any symptoms
70
46
- Severe symptoms†
7
3
• Mucositis
- Any symptoms
23
17
- Severe symptoms†
3
<1
a Based on worst course analysis.
b Paclitaxel dose in mg/m2/infusion duration in hours.
c All patients received premedication.
† Severe events are defined as at least Grade III Toxicity.
Myelosuppression and peripheral neuropathy were dose related. There was one severe hypersensitivity reaction (HSR) observed at the dose of 135 mg/m2.
Adverse Event Experiences by Body System: The following discussion refers to the overall safety database of 812 patients with solid tumors treated with single-agent paclitaxel in clinical studies. The frequency and severity of important adverse events for the Phase 3 ovarian carcinoma and breast carcinoma studies are presented above in tabular form by treatment arm. In addition, rare events have been reported from postmarketing experience or from other clinical studies. The frequency and severity of adverse events have been generally similar for patients receiving paclitaxel for the treatment of ovarian or breast carcinoma.
Hematologic: Bone marrow suppression was the major dose-limiting toxicity of paclitaxel. Neutropenia, the most important hematologic toxicity, was dose and schedule dependent and was generally rapidly reversible. Among patients treated in the Phase 3 ovarian study with a 3-hour infusion, neutrophil counts declined below 500 cells/mm3 in 14% of the patients treated with a dose of 135 mg/m2 compared to 27% at a dose of 175 mg/m2 (p=0.05). In the same study, severe neutropenia (<500 cells/mm3) was more frequent with the 24-hour than with the 3-hour infusion; infusion duration had a greater impact on myelosuppression than dose. Neutropenia did not appear to increase with cumulative exposure and did not appear to be more frequen