LD between significant SNPs from our case-control study and other Significant SNPs from two NPC GWA studies based on CHB and JPT HapMap data. LD was measured as D'. The red squares represent the LD between the two loci; the redder the color, the greater the linkage disequilibrium. Red cell without a number reflects D' = 1. Loci significant in the present study were marked in red frame in three blocks which were marked in black frame.