Relative incidence of agranulocytosis and aplastic anemia

David W. Kaufman, Judith P. Kelly, Surapol Issaragrisil, Joan Ramon Laporte, Theresa Anderson, Micha Levy, Samuel Shapiro, Neal S. Young

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38 Citations (Scopus)


Agranulocytosis and aplastic anemia are both rare, life-threatening blood dyscrasias. Agranulocytosis is mainly caused by medicines, whereas the etiology of aplastic anemia is largely unexplained. In two epidemiologic studies using the same methods, we observed a striking inverse relationship between the incidence of the two diseases in different regions, including five countries in Europe, and Israel and Thailand. The annual incidence of agranulocytosis ranged from 1.1 to 4.9 cases per million, and that of aplastic anemia, from 0.7 to 4.1 per million; the inverse correlation was consistent among the regions (R 2 = 0.74). There is no clear explanation for this previously unreported pattern, but it seems unlikely to be due to methodology. © 2005 Wiley-Liss, Inc.
Original languageEnglish
Pages (from-to)65-67
JournalAmerican Journal of Hematology
Issue number1
Publication statusPublished - 1 Jan 2006


  • Bone marrow failure
  • Epidemiology
  • Hematopoiesis
  • International


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