Of other cytokines, tumour necrosis percentage positively correlated with IL7 in Cohort 2B but not in 2 A (beta = 0.190 and 0.083, P = 0.017 and 0.375, respectively), and with IL6 in Cohort 2A (beta = 0.191, P = 0.043). The gene discussed is IL6; the disease is neoplasm.