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Int J Cancer. 1994 Nov 1;59(3):373-8.

Expression of the FGFR1 gene in human breast-carcinoma cells.

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D├ępartement d'Anatomo-Pathologie, Institut Paoli-Calmettes, Marseille, France.


Fibroblast growth factors (FGF) constitute a family of at least 9 members which act through high-affinity tyrosine-kinase receptors encoded by 4 distinct genes. In humans, the FGFR1 gene is located in chromosomal region 8p12. Its amplification and expression were examined in a panel of 110 breast carcinoma samples by Southern- and Northern-blot analyses. FGFR1 was amplified in 9% and overexpressed in about 15% of the tumors studied. In situ hybridization experiments were performed on tissue sections of normal breast and tumors with a high level of FGFR1 expression. In both normal and tumoral tissues, FGFR1 RNA was detected in the epithelial cells. Overexpression of FGFR1 seems to be associated with small, well-differentiated diploid tumors.

[Indexed for MEDLINE]

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