CSF1 and breast cancer: In addition, 6 to 12% of breast cancers were positive for both of FOTS and TGCT/CSF1 core gene sets, 41 to 65% of breast cancers were negative for both FOTS and TGCT/CSF1 core gene sets, 5 to 24% of breast cancers were FOTS+/TGCT/CSF1-, and 23 to 24% of breast cancers were FOTS-/TGCT/CSF1+.