Assessing the Variations in Breast/Ovarian Cancer Risk for Chinese BRCA1/2 Carriers

Figure 4

Geographical distribution of the six known Chinese founder mutations. Areas with sample size <100 are colored in light gray; areas with sample size <50 are colored in dark gray. The total sample size is 7,919. Spot size (defined as the spot size unit is based on the number count of the corresponding mutation carriers) indicates the frequency of mutation, and spot color indicates different founder mutations.