Mean CMYC mRNA was 4.1 in tumour specimens of 42 patients, and ≥ 4.1 CMYC mRNA was detected in six of seven large cell PTCL-TFH patients (86%), which was significantly higher than in small cell PTCL-TFH (0/5, 0%) and F-TCL (0/5, 0%) (both p < 0.05). The gene discussed is MYC; the disease is neoplasm.