HDAC1 and HDAC2 are upregulated in DLBCL, peripheral T-cell leukemias, cutaneous T-cell lymphomas and NK/T-cell lymphomas and the expression of HDAC1 was found to be related to worse prognosis in patients (Min et al., 2012). This evidence concerns the gene HDAC1 and extranodal nasal NK/T cell lymphoma.