A comparison of the distribution of measurements for PIK3CA H1047R, PIK3CA E545K, KRAS G12D, KRAS G12V, HRAS G12D, and BRAF V600E MFs in all IDCs for the four subtypes is given in Figure 4, along with MF measurements previously reported in normal breast (collected from individuals who died from causes unrelated to cancer or diseases affecting the breast [7,11]). Here, PIK3CA is linked to cancer.