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Title: Hyaline vascular Castleman's disease with HMGIC rearrangement in follicular dendritic cells: molecular evidence of mesenchymal tumorigenesis
Authors: Cokelaere, Kristof ×
Debiec-Rychter, Maria
Peeters, Christiane
Hagemeijer-Hausman, Anne
Sciot, Raphael #
Issue Date: May-2002
Series Title: The American journal of surgical pathology. vol:26 issue:5 pages:662-669
Abstract: Chromosomal aberrations involving chromosome segment 12q13-15 are a common finding in a variety of benign mesenchymal tumors. The target gene encodes for HMGIC, a member of the high mobility group protein family. These proteins act as architectural transcription factors. HMGIC plays a role as a common genetic denominator in benign mesenchymal tumorigenesis. We report a case of hyaline vascular Castleman's disease with intragenic HMGIC rearrangement, due to a clonal cytogenetic aberration involving the long arm of chromosome 12 [46,XX, add(1)(q21),der(6)t(6;12) (q23;q15),add(7)(p22), -9,inv(9)(p11q13),del(12)(q15),+mar] obtained after short-term primary cultures. A combined immunocytologic-cytogenetic approach enabled us to demonstrate the exclusive presence of HMGIC rearrangement in anti-CD21 reactive follicular dendric cells. This finding confirms that a clonal proliferation of follicular dendritic cells occurs in the hyaline vascular variant of Castleman's disease. It also provides a possible molecular pathway explaining stromal overgrowths and stromal neoplasms developing from this disorder.
ISSN: 0147-5185
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Clinical Genetics Section (-)
Translational Cell & Tissue Research
Laboratory for Genetics of Malignant Disorders
× corresponding author
# (joint) last author

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