An open-label international multicentric phase II study of nilotinib in progressive pigmented villo-nodular synovitis (PVNS) not amenable to a conservative surgical treatment. by Gelderblom, H, Perol, D, Chevreau, C, Tattersall, M, Stacchiotti, S, Casali, P, Cropet, C, Piperno-Neumann, S, Le Cesne, A, Italiano, A, Ferraresi, V, Duffaud, F, Penel, N, Dileo, P, Bertucci, F, Hassan, A, Kroep, JR, Denizot-Guillemaut, S, Blay, J