Using FFPE tissues, Nourse et al found that EBV‐miRNA was profiled reliably within archival FFPE tissue in 14/23 patients, but not in tissues with low abundance of EBV.29 In subsequent studies, the same group found that nine CNS and 16 systemic PTLD tissues expressed similar viral latent (EBNA2, EBNA3A, LMP1) and lytic (BZLF1, BRLF1, BLLF1) gene mRNA transcripts.30 This evidence concerns the gene PDLIM7 and post-transplant lymphoproliferative disease.