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Drug Information for Idamycin idarubicin hydrochloride for injection, USP (Pharmacia and Upjohn Co.): ADVERSE REACTIONS
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- ADVERSE REACTIONS
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Approximately 550 patients with AML have received IDAMYCIN (idarubicin hydrochloride for injection, USP) in combination with cytarabine in controlled clinical trials worldwide. In addition, over 550 patients with acute leukemia have been treated in uncontrolled trials utilizing IDAMYCIN as a single agent or in combination. The table below lists the adverse experiences reported in U.S. Study 2 (see CLINICAL STUDIES) and is representative of the experiences in other studies. These adverse experiences constitute all reported or observed experiences, including those not considered to be drug related. Patients undergoing induction therapy for AML are seriously ill due to their disease, are receiving multiple transfusions, and concomitant medications including potentially toxic antibiotics and antifungal agents. The contribution of the study drug to the adverse experience profile is difficult to establish.
Induction Phase Percentage of Patients IDR DNR Adverse Experiences (N=110) (N=118) Infection 95% 97% Nausea & Vomiting 82% 80% Hair Loss 77% 72% Abdominal Cramps/Diarrhea 73% 68% Hemorrhage 63% 65% Mucositis 50% 55% Dermatologic 46% 40% Mental Status 41% 34% Pulmonary-Clinical 39% 39% Fever (not elsewhere classified) 26% 28% Headache 20% 24% Cardiac-Clinical 16% 24% Neurologic-Peripheral Nerves 7% 9% Pulmonary Allergy 2% 4% Seizure 4% 5% Cerebellar 4% 4%
The duration of aplasia and incidence of mucositis were greater on the IDR arm than the DNR arm, especially during consolidation in some U.S. controlled trials (see CLINICAL STUDIES).
The following information reflects experience based on U.S. controlled clinical trials.
Severe myelosuppression is the major toxicity associated with IDAMYCIN therapy, but this effect of the drug is required in order to eradicate the leukemic clone. During the period of myelosuppression, patients are at risk of developing infection and bleeding which may be life-threatening or fatal.
Nausea and/or vomiting, mucositis, abdominal pain and diarrhea were reported frequently, but were severe (equivalent to WHO Grade 4) in less than 5% of patients. Severe enterocolitis with perforation has been reported rarely. The risk of perforation may be increased by instrumental intervention. The possibility of perforation should be considered in patients who develop severe abdominal pain and appropriate steps for diagnosis and management should be taken.
Alopecia was reported frequently and dermatologic reactions including generalized rash, urticaria and a bullous erythrodermatous rash of the palms and soles have occurred. The dermatologic reactions were usually attributed to concomitant antibiotic therapy. Local reactions including hives at the injection site have been reported. Recall of skin reaction due to prior radiotherapy has occurred with IDAMYCIN administration.
Hepatic and Renal
Changes in hepatic and renal function tests have been observed. These changes were usually transient and occurred in the setting of sepsis and while patients were receiving potentially hepatotoxic and nephrotoxic antibiotics and antifungal agents. Severe changes in renal function (equivalent to WHO Grade 4) occurred in no more than 1% of patients, while severe changes in hepatic function (equivalent to WHO Grade 4) occurred in less than 5% of patients.
Congestive heart failure (frequently attributed to fluid overload), serious arrhythmias including atrial fibrillation, chest pain, myocardial infarction and asymptomatic declines in LVEF have been reported in patients undergoing induction therapy for AML. Myocardial insufficiency and arrhythmias were usually reversible and occurred in the setting of sepsis, anemia and aggressive intravenous fluid administration. The events were reported more frequently in patients over age 60 years and in those with pre-existing cardiac disease.
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