Pharmacy and Therapeutics - January 2008 - (Page 49) DOXIL® (doxorubicin HCL liposome injection) DOXIL® (doxorubicin HCL liposome injection) HFS, with 3 (0.9%) discontinuing. In the randomized multiple myeloma study, 19% of patients treated with DOXIL at 30 mg/m2 every three weeks experienced HFS. HFS was generally observed after 2 or 3 cycles of treatment but may occur earlier. In most patients the reaction is mild and resolves in one to two weeks so that prolonged delay of therapy need not occur. However, dose modification may be required to manage HFS [see Full Prescribing Information]. The reaction can be severe and debilitating in some patients and may require discontinuation of treatment. Radiation Recall Reaction: Recall reaction has occurred with DOXIL administration after radiotherapy. Fetal Mortality: Pregnancy Category D: DOXIL can cause fetal harm when administered to a pregnant woman. There are no adequate and well-controlled studies in pregnant women. If DOXIL is to be used during pregnancy, or if the patient becomes pregnant during therapy, the patient should be apprised of the potential hazard to the fetus. If pregnancy occurs in the first few months following treatment with DOXIL, the prolonged half-life of the drug must be considered. Women of childbearing potential should be advised to avoid pregnancy during treatment with Doxil [see Use in Specific Populations]. Toxicity Potentiation: The doxorubicin in DOXIL may potentiate the toxicity of other anticancer therapies. Exacerbation of cyclophosphamide-induced hemorrhagic cystitis and enhancement of the hepatotoxicity of 6mercaptopurine have been reported with the conventional formulation of doxorubicin HCl. Radiation-induced toxicity to the myocardium, mucosae, skin, and liver have been reported to be increased by the administration of doxorubicin HCl. Monitoring: Laboratory Tests: Complete blood counts, including platelet counts, should be obtained frequently and at a minimum prior to each dose of DOXIL [see Warnings and Precautions]. ADVERSE REACTIONS: Overall Adverse Reactions Profile: The following adverse reactions are discussed in more detail in other sections of the labeling. • Cardiac Toxicity [see Warnings and Precautions] • Infusion reactions [see Warnings and Precautions] • Myelosuppression [see Warnings and Precautions] • Hand-Foot syndrome [see Warnings and Precautions] The most common adverse reactions observed with DOXIL are asthenia, fatigue, fever, nausea, stomatitis, vomiting, diarrhea, constipation, anorexia, hand-foot syndrome, rash and neutropenia, thrombocytopenia and anemia. The most common serious adverse reactions observed with DOXIL are described in Adverse Reactions in Clinical Trials. The safety data described below reflect exposure to DOXIL in 318 patients with multiple myeloma [see Adverse Reactions in Clinical Trials]. Adverse Reactions in Clinical Trials: Because clinical trials are conducted under widely varying conditions, the adverse reaction rates observed cannot be directly compared to rates on other clinical trials and may not reflect the rates observed in clinical practice. Patients With Multiple Myeloma: The safety data below are from 318 patients treated with DOXIL (30 mg/m2 as a 1-hr i.v. infusion) administered on day 4 following bortezomib (1.3 mg/m2 i.v. bolus on days 1, 4, 8 and 11) every three weeks, in a randomized, open-label, multicenter study. In this study, patients in the DOXIL + bortezomib combination group were treated for a median number of 138 days (range 21-410 days). The population was 28-85 years of age, 58% male, 42% female, 90% Caucasian, 6% Black, and 4% Asian and other. Table 2 lists adverse reactions reported in 10% or more of patients treated with DOXIL in combination with bortezomib for multiple myeloma. Table 2: Frequency of treatment emergent adverse reactions reported in ≥10% patients treated for multiple myeloma with DOXIL in combination with bortezomib, by Severity, Body System, and MedDRA Terminology. Adverse DOXIL + bortezomib (n=318) Bortezomib (n=318) Reaction Any Grade Grade Any Grade Grade (%) 3 4 (%) 3 4 Blood and lymphatic system disorders Neutropenia 36 22 10 22 11 5 Thrombocytopenia 33 11 13 28 9 8 Anemia 25 7 2 21 8 2 General disorders and administration site conditions Fatigue 36 6 1 28 3 0 Pyrexia 31 1 0 22 1 0 Asthenia 22 6 0 18 4 0 Gastrointestinal disorders Nausea 48 3 0 40 1 0 Diarrhea 46 7 0 39 5 0 Vomiting 32 4 0 22 1 0 Constipation 31 1 0 31 1 0 Mucositis/Stomatitis 20 2 0 5 <1 0 Abdominal pain 11 1 0 8 1 0 Table 2: Cont. Infections and infestations Herpes zoster Herpes simplex Investigations Weight decreased Metabolism and Nutritional disorders Anorexia Nervous system disorders Peripheral Neuropathy* Neuralgia Paresthesia/dysesthesia Respiratory, thoracic and mediastinal disorders Cough Skin and subcutaneous tissue disorders Rash** Hand-foot syndrome 11 10 12 2 0 0 0 0 0 9 6 4 2 1 0 0 0 0 19 42 17 13 2 7 3 <1 0 <1 0 0 14 45 20 10 <1 10 4 0 0 1 1 0 18 0 0 12 0 0 22 19 1 6 0 0 18 <1 1 0 0 0 *Peripheral neuropathy includes the following adverse reactions: peripheral sensory neuropathy, neuropathy peripheral, polyneuropathy, peripheral motor neuropathy, and neuropathy NOS. **Rash includes the following adverse reactions: rash, rash erythematous, rash macular, rash maculo-papular, rash pruritic, exfoliative rash, and rash generalized. Post Marketing Experience: The following additional adverse reactions have been identified during post approval use of DOXIL. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Musculoskeletal and Connective Tissue Disorders: rare cases of muscle spasms. Respiratory, Thoracic and Mediastinal Disorders: rare cases of pulmonary embolism (in some cases fatal). Hematologic disorders: Secondary acute myelogenous leukemia with and without fatal outcome has been reported in patients whose treatment included DOXIL. DRUG INTERACTIONS: No formal drug interaction studies have been conducted with DOXIL. DOXIL may interact with drugs known to interact with the conventional formulation of doxorubicin HCl. USE IN SPECIFIC POPULATIONS: Pediatric Use: The safety and effectiveness of DOXIL in pediatric patients have not been established. Geriatric Use: Of the 318 patients treated with DOXIL in combination with bortezomib for multiple myeloma, 37% were 65 years of age or older and 8% were 75 years of age or older. No overall differences in safety or efficacy were observed between these patients and younger patients. OVERDOSAGE: Acute overdosage with doxorubicin HCl causes increases in mucositis, leucopenia, and thrombocytopenia. Treatment of acute overdosage consists of treatment of the severely myelosuppressed patient with hospitalization, antibiotics, platelet and granulocyte transfusions, and symptomatic treatment of mucositis. Rx only: Last revised: May 2007 Manufactured by: Ben Venue Laboratories, Inc. Bedford, OH 44146 Distributed by: Ortho Biotech Products, LP Raritan, NJ 08869-0670 00167161-2MB ® An ALZA STEALTH® Technology Product STEALTH® and DOXIL® are registered trademarks of ALZA Corporation.
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