Successful treatment of systemic mastocytosis with high-dose interferon-alfa: long-term follow-up of a case
Abstract
Daily treatment of systemic mastocytosis with high-dose interferon-alfa often is not tolerated because of clinical or hematologic side effects. We report successful treatment of a patient with systemic mastocytosis, who was positive for the D816V mutation, with interferon alfa-2b at 10 million units three times per week. During 5 years of treatment, bone marrow infiltration by mast cells decreased from 50 to ≤5%, and there was a decrease (urinary N-methylhistamine excretion, 75%; serum tryptase concentration, 98%) or normalization (serum calcitonin value, urinary prostaglandin F2α excretion) of mast cell mediators. Side effects included mild depression (untreated) and biochemical hypothyroidism easily managed with supplemental levothyroxine.
Keywords: c-kit mutation, Interferon-alfa, Prostaglandin F2α, Systemic mastocytosis therapy, Tryptase
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PII: S0145-2126(04)00217-6
doi:10.1016/j.leukres.2004.05.003
© 2004 Elsevier Ltd. All rights reserved.
