PFS in patients stratified by FCGR3A genotype. (A) FC treated patients stratified by FCGR3A genotype. (B) R-FC treated patients stratified by FCGR3A genotype. (C) FC treated patients stratified by FCGR3A genotypes FV/FF vs VV. (D) R-FC treated patients stratified by FCGR3A genotypes FV/FF vs VV.