Different expressed genes were found in BC and non-tumorous tissues, including significantly upregulated genes PABPN1, CPSF1, PPP1CA, CPSF4, SNRPA, PTBP1, CPSF3, CPSF6, SNRNP70, CSTF1, CSTF2, CSTF3, HNRNPF, CPSF2, FIP1L1, CPSF7, WDR33, ELAVL1, HNRNPC, and significantly downregulated genes PPP1CB, CELF2, and CPEB1. The gene discussed is PPP1CA; the disease is breast cancer.