Title |
Response to imatinib in villonodular pigmented synovitis (PVNS) resistant to nilotinib
|
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Published in |
Clinical Sarcoma Research, May 2013
|
DOI | 10.1186/2045-3329-3-8 |
Pubmed ID | |
Authors |
Silvia Stacchiotti, Flavio Crippa, Antonella Messina, Silvana Pilotti, Alessandro Gronchi, Jean Y Blay, Paolo G Casali |
Abstract |
Pigmented villonodular synovitis (PVNS) is a rare locally aggressive tumor. PVNS is characterized in most cases by a specific t(1;2) translocation, which fuses the colony stimulating factor-1 (CSF1) gene to the collagen type VIa3 (COL6A3) promoter thus leading through a paracrine effect to the attraction of non-neoplastic inflammatory cells expressing CSF1-receptor. Imatinib is a tirosin-kinase inhibitors (TKI) active against CSF1-receptor whose activity in naïve PVNS was already described. We report on two PVNS patients who responded to imatinib after failure to nilotinib, another CSF1-receptor inhibitor. |
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