The objective response rate ( ORR ) was @ % ( @/@ ) and @ % ( @/@ ) ( ( @ ) = @ , P = @ ) , the disease control rate ( DCR ) was @ % ( @/@ ) and @ % ( @/@ ) ( ( @ ) = @ , P = @ ) , and the median overall survival ( OS ) was @ months and @ months ( ( @ ) = @ , P = @ ) , respectively ; the differences being not significant .