Detection of COL1A1-PDGFB fusion transcripts and platelet-derived growth factor alpha and beta receptors in giant cell fibroblastoma of the postsacrococcygeal region

The British Journal of Dermatology
A KashimaY Asada

Abstract

We describe a 2-year-old girl with recurrent giant cell fibroblastoma (GCF) of the postsacrococcygeal region. Both the initial and recurrent tumours contained solid and angiectoid areas. The former was composed of loosely arranged wavy spindle cells and giant cells with a well-vascularized myxoid to collagenous stroma. The angiectoid spaces were often lined by multinucleated giant cells. Immunohistochemically, the tumour cells and small vessels in the tumour tissue were positive for platelet-derived growth factor (PDGF) alpha and beta receptors. Molecular analysis revealed fusion of collagen type Ialpha1 exon 26 with PDGF-B chain exon 2 that induced unscheduled production of PDGF-BB. These findings suggest that PDGF and its receptors significantly contribute to the development of GCF in both an autocrine and a paracrine manner.

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Citations

Jan 27, 2010·Dermatologic Surgery : Official Publication for American Society for Dermatologic Surgery [et Al.]·David J NajarianNathalie C Zeitouni
Sep 1, 2011·Surgical Pathology Clinics·Karokh H SalihElizabeth A Montgomery
May 18, 2010·Annales de dermatologie et de vénéréologie·S BucheL Mortier

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