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Common side effects that are minor and easily managed include transient leukopenia and elevated liver enzymes, nausea, alopecia, bluish discoloration of urine, and urinary tract infections. Amenorrhea, severe infection, cardiac toxicity, and toxic leukemias are more serious adverse events associated with mitoxantrone treatment but occur infrequently. The potential for clinically significant heart failure is low and is dose-related. Subclinical reductions in left ventricular ejection fraction may occur with serial doses, underscoring the importance of careful monitoring before initiating and during treatment. The risk for chronic cardiomyopathy limits the approved cumulative dose of mitoxantrone for treatment of MS to 140 mg/m2. |
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