Meanwhile, the transcription level of FKBP4 in different types of BC were higher than normal tissues, including ductal breast carcinoma in situ (DBC in situ) with fold change=3.650, invasive lobular breast carcinoma (ILBC) with fold change=2.245, and invasive ductal breast carcinoma (IDBC) with fold change=2.657, invasive ductal and invasive lobular breast carcinoma (IBC) with fold change=2.480 (Figure 1B-1E). The gene discussed is FKBP4; the disease is ductal breast carcinoma in situ.