Multiple active X chromosomes in myelofibrosis with myeloid metaplasia

Daniel L. Van Dyke, Joseph P. Abraham, Koichi Maeda, Lester Weiss, Mary Poel

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


A woman with myelofibrosis and myeloid metaplasia had a karyotype of 47,X,del(X)(q22), +del(X)(q22) in unstimulated peripheral blood and bone marrow aspirate cultures. The normal X chromosome was late replicating, and the two deleted X chromosomes always replicated early and synchronously. The karyotype from phytohemagglutin-stimulated peripheral blood cultures was uniformly 46,XX. Structurally abnormal X chromosomes are exceedingly rare in myeloproliferative disease. The abnormal karyotype very likely reflects monoclonal proliferation of an abnormal myeloid cell line. The X chromosome inactivation process, which acts upon embryonic somatic cells of all mammals, apparently does not react to postembryonic nondisjunction of the active X chromosome.

Original languageEnglish (US)
Pages (from-to)137-144
Number of pages8
JournalCancer Genetics and Cytogenetics
Issue number2
StatePublished - Mar 1981

ASJC Scopus subject areas

  • Genetics
  • Molecular Biology
  • Cancer Research


Dive into the research topics of 'Multiple active X chromosomes in myelofibrosis with myeloid metaplasia'. Together they form a unique fingerprint.

Cite this