The (11;14)(q13;q32) translocation in multiple myeloma: A morphologic and immunohistochemical study

J. D. Hoyer, C. A. Hanson, R. Fonseca, P. R. Greipp, G. W. Dewald, P. J. Kurtin

Research output: Contribution to journalArticle

94 Scopus citations

Abstract

We identified 24 cases of multiple myeloma with the t(11;14)(q13;q32). In 22 cases, the t(11:14)(q13;q32) was part of a complex karyotype, and in 2 cases it was an isolated abnormality. All patients had clinical and laboratory features consistent with multiple myeloma. The median degree of plasma cell involvement in the bone marrow was 60%, and in 10 cases, the plasma cells had a lymphoplasmacytoid appearance. Of the 24 cases, 21 had intermediate or high proliferative rates based on labeling index studies. Immunohistochemical studies performed on all bone marrow biopsy specimens showed strong cyclin D1 nuclear positivity in 19 cases. There also was strong cyclin D1 nuclear positivity found in 6 of 30 additional cases without the t(11;14)(q13;q32) demonstrated by routine cytogenetics. The t(11;14)(q13;q32) in multiple myeloma results in overexpression of the cyclin D1 protein, which can be demonstrated by immunohistochemical stain. The cyclin D1 stain results in the additional cases of multiple myeloma suggest that the t(11;14)(q13;q32) may be more common than previously thought and may be missed by routine cytogenetics, particularly if the proliferative rate is low.

Original languageEnglish (US)
Pages (from-to)831-837
Number of pages7
JournalAmerican journal of clinical pathology
Volume113
Issue number6
DOIs
StatePublished - Dec 1 2000

Keywords

  • Cyclin D1
  • Immunohistochemistry
  • Multiple myeloma
  • t(11;14)(q13;q32)

ASJC Scopus subject areas

  • Pathology and Forensic Medicine

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