IBSP and breast cancer: However, the HA/TCP-N group has a better expression of the BSP gene when compared to all the other groups, resulting in very significant differences in relation to the BC-A group and to the BC-N and HA/TCP-A groups: p < 0.0001 (BC-N), p = 0.0018 (BC-A), p < 0.0001 (HA/TCP-A).