Interestingly, we found that five core 3′ processing factors (CPSF100, CstF64τ, CstF50, CFIm68 and CFIm25) switched poly(A) sites upon viral infection (Fig. 6f), and these genes may escape from miRNA binding when short 3′ UTRs were used. The gene discussed is CPSF6; the disease is viral infectious disease.