RESULTS	The tumor response rate was 51.7 % ( 95 % CI : 39.0 % , 64.3 % ) and 44.3 % ( 95 % CI : 31.8 % , 56.7 % ) in the six-cycle and three-cycle arms , respectively , with corresponding median response durations of 4.86 months ( 95 % CI : 4.30 , 7.16 ) and 3.94 months ( 95 % CI : 2.92 , 4.47 ) .\