Fig. 2

Principal component analysis of the DCM cases, reference group, and East Asian population. Principal component analysis based on common variants confirmed that there were no significant differences in population structure between the DCM cases and reference group. The individual genotypes of human populations are from Hapmap3. A PC1 and PC2, B PC1 and PC3, C PC2 and PC3. DCM dilated cardiomyopathy, YRI Yoruba in Ibadan, Nigeria, CEU Utah Residents with Northern and Western European Ancestry, CDX Chinese Dai in Xishuangbanna, China, CHB Han Chinese in Beijing, China, CHS Southern Han Chinese